./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 01:07:32,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:07:32,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:07:32,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:07:32,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:07:32,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:07:32,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:07:32,943 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:07:32,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:07:32,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:07:32,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:07:32,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:07:32,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:07:32,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:07:32,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:07:32,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:07:32,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:07:32,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:07:32,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:07:32,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:07:32,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:07:32,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:07:32,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:07:32,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:07:32,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:07:33,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:07:33,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:07:33,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:07:33,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:07:33,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:07:33,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:07:33,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:07:33,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:07:33,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:07:33,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:07:33,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:07:33,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:07:33,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:07:33,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:07:33,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:07:33,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:07:33,021 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-26 01:07:33,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:07:33,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:07:33,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:07:33,062 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:07:33,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:07:33,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:07:33,064 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:07:33,064 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:07:33,065 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:07:33,065 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:07:33,066 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:07:33,066 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:07:33,067 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:07:33,067 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:07:33,067 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:07:33,067 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:07:33,068 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:07:33,068 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:07:33,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:07:33,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:07:33,071 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:07:33,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:07:33,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:07:33,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:07:33,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:07:33,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:07:33,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:07:33,073 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-26 01:07:33,073 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:07:33,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:07:33,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:07:33,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:07:33,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:07:33,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:07:33,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:33,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:07:33,075 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:07:33,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:07:33,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:07:33,076 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:07:33,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:07:33,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:07:33,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:07:33,077 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_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 [2022-11-26 01:07:33,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:07:33,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:07:33,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:07:33,472 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:07:33,473 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:07:33,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2022-11-26 01:07:36,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:07:37,072 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:07:37,087 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2022-11-26 01:07:37,106 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/data/325c9a621/55687a057e1948eaaeba040872846f09/FLAG76aa810fc [2022-11-26 01:07:37,127 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/data/325c9a621/55687a057e1948eaaeba040872846f09 [2022-11-26 01:07:37,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:07:37,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:07:37,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:37,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:07:37,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:07:37,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555350e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37, skipping insertion in model container [2022-11-26 01:07:37,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:07:37,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:07:37,731 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_6c18582b-62ad-43f1-996f-92e88b166d76/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i[30403,30416] [2022-11-26 01:07:37,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:37,761 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:07:37,823 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_6c18582b-62ad-43f1-996f-92e88b166d76/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i[30403,30416] [2022-11-26 01:07:37,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:07:37,861 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:07:37,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37 WrapperNode [2022-11-26 01:07:37,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:07:37,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:37,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:07:37,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:07:37,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,944 INFO L138 Inliner]: procedures = 172, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 91 [2022-11-26 01:07:37,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:07:37,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:07:37,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:07:37,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:07:37,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,991 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:37,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:07:38,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:07:38,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:07:38,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:07:38,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (1/1) ... [2022-11-26 01:07:38,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:07:38,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:07:38,039 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:07:38,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c18582b-62ad-43f1-996f-92e88b166d76/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:07:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-26 01:07:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-26 01:07:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:07:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:07:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:07:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:07:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:07:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:07:38,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:07:38,098 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 01:07:38,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:07:38,265 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:07:38,470 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:07:38,624 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:07:38,625 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 01:07:38,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:38 BoogieIcfgContainer [2022-11-26 01:07:38,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:07:38,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:07:38,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:07:38,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:07:38,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:07:37" (1/3) ... [2022-11-26 01:07:38,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269cfd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:38, skipping insertion in model container [2022-11-26 01:07:38,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:07:37" (2/3) ... [2022-11-26 01:07:38,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269cfd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:07:38, skipping insertion in model container [2022-11-26 01:07:38,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:07:38" (3/3) ... [2022-11-26 01:07:38,638 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2022-11-26 01:07:38,648 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 01:07:38,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:07:38,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-26 01:07:38,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 01:07:38,721 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 01:07:38,757 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:07:38,790 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 86 transitions, 177 flow [2022-11-26 01:07:38,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 86 transitions, 177 flow [2022-11-26 01:07:38,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 86 transitions, 177 flow [2022-11-26 01:07:38,888 INFO L130 PetriNetUnfolder]: 5/97 cut-off events. [2022-11-26 01:07:38,888 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-26 01:07:38,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 97 events. 5/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2022-11-26 01:07:38,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 1568 [2022-11-26 01:07:41,979 INFO L134 LiptonReduction]: Checked pairs total: 1412 [2022-11-26 01:07:41,979 INFO L136 LiptonReduction]: Total number of compositions: 93 [2022-11-26 01:07:41,987 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 16 transitions, 37 flow [2022-11-26 01:07:42,002 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:42,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:42,035 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;@156f661b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:42,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-26 01:07:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:07:42,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:42,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:07:42,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-26 01:07:42,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 13837758, now seen corresponding path program 1 times [2022-11-26 01:07:42,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:42,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72844267] [2022-11-26 01:07:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:42,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:42,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72844267] [2022-11-26 01:07:42,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72844267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:42,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:42,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:07:42,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732798520] [2022-11-26 01:07:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:42,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 01:07:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 01:07:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:07:42,298 INFO L87 Difference]: Start difference. First operand has 52 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:42,344 INFO L93 Difference]: Finished difference Result 15 states and 24 transitions. [2022-11-26 01:07:42,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 01:07:42,347 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:07:42,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:42,356 INFO L225 Difference]: With dead ends: 15 [2022-11-26 01:07:42,356 INFO L226 Difference]: Without dead ends: 15 [2022-11-26 01:07:42,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:07:42,363 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:42,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 01:07:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-26 01:07:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-26 01:07:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2022-11-26 01:07:42,401 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 4 [2022-11-26 01:07:42,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:42,403 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2022-11-26 01:07:42,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2022-11-26 01:07:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 01:07:42,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:42,409 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 01:07:42,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:07:42,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2022-11-26 01:07:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash 413142688, now seen corresponding path program 1 times [2022-11-26 01:07:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:42,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356566994] [2022-11-26 01:07:42,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:42,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:07:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:42,520 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:07:42,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:07:42,526 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-26 01:07:42,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-26 01:07:42,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-26 01:07:42,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-26 01:07:42,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-26 01:07:42,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-26 01:07:42,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-26 01:07:42,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-26 01:07:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-26 01:07:42,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-26 01:07:42,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-26 01:07:42,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-26 01:07:42,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-26 01:07:42,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-26 01:07:42,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-26 01:07:42,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:07:42,552 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 01:07:42,555 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 01:07:42,555 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-26 01:07:42,618 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 01:07:42,623 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:07:42,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 143 transitions, 298 flow [2022-11-26 01:07:42,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 143 transitions, 298 flow [2022-11-26 01:07:42,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 143 transitions, 298 flow [2022-11-26 01:07:42,684 INFO L130 PetriNetUnfolder]: 9/167 cut-off events. [2022-11-26 01:07:42,684 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-26 01:07:42,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 167 events. 9/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 295 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 125. Up to 6 conditions per place. [2022-11-26 01:07:42,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 9520 [2022-11-26 01:07:45,973 INFO L134 LiptonReduction]: Checked pairs total: 18903 [2022-11-26 01:07:45,974 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-26 01:07:45,980 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 46 transitions, 104 flow [2022-11-26 01:07:46,114 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2148 states, 2011 states have (on average 3.0407757334659373) internal successors, (6115), 2147 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:46,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:46,121 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;@156f661b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:46,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-26 01:07:46,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 2148 states, 2011 states have (on average 3.0407757334659373) internal successors, (6115), 2147 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:46,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:07:46,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:46,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:07:46,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-26 01:07:46,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash 745761505, now seen corresponding path program 1 times [2022-11-26 01:07:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:46,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672212633] [2022-11-26 01:07:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:46,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:46,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:46,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672212633] [2022-11-26 01:07:46,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672212633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:46,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:46,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:07:46,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23507754] [2022-11-26 01:07:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:46,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:46,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:46,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:46,250 INFO L87 Difference]: Start difference. First operand has 2148 states, 2011 states have (on average 3.0407757334659373) internal successors, (6115), 2147 states have internal predecessors, (6115), 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, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:46,384 INFO L93 Difference]: Finished difference Result 1215 states and 3300 transitions. [2022-11-26 01:07:46,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:46,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 01:07:46,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:46,404 INFO L225 Difference]: With dead ends: 1215 [2022-11-26 01:07:46,404 INFO L226 Difference]: Without dead ends: 1215 [2022-11-26 01:07:46,404 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 [2022-11-26 01:07:46,405 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:46,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 21 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:07:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-11-26 01:07:46,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 995. [2022-11-26 01:07:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 983 states have (on average 2.745676500508647) internal successors, (2699), 994 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 2699 transitions. [2022-11-26 01:07:46,493 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 2699 transitions. Word has length 5 [2022-11-26 01:07:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:46,493 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 2699 transitions. [2022-11-26 01:07:46,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 2699 transitions. [2022-11-26 01:07:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:07:46,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:46,495 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 01:07:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:07:46,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2022-11-26 01:07:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -140841124, now seen corresponding path program 1 times [2022-11-26 01:07:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:46,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678428700] [2022-11-26 01:07:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:46,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:46,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:07:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:46,572 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:07:46,579 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:07:46,579 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-11-26 01:07:46,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-11-26 01:07:46,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-11-26 01:07:46,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-11-26 01:07:46,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-11-26 01:07:46,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-11-26 01:07:46,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-11-26 01:07:46,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-11-26 01:07:46,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-11-26 01:07:46,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-11-26 01:07:46,582 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-11-26 01:07:46,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-11-26 01:07:46,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-11-26 01:07:46,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-11-26 01:07:46,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-11-26 01:07:46,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-11-26 01:07:46,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-11-26 01:07:46,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-11-26 01:07:46,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-11-26 01:07:46,586 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-11-26 01:07:46,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-11-26 01:07:46,587 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-11-26 01:07:46,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:07:46,588 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 01:07:46,589 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 01:07:46,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-26 01:07:46,633 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 01:07:46,642 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:07:46,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 200 transitions, 421 flow [2022-11-26 01:07:46,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 200 transitions, 421 flow [2022-11-26 01:07:46,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 200 transitions, 421 flow [2022-11-26 01:07:46,766 INFO L130 PetriNetUnfolder]: 13/237 cut-off events. [2022-11-26 01:07:46,770 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-26 01:07:46,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 237 events. 13/237 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 611 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2022-11-26 01:07:46,792 INFO L119 LiptonReduction]: Number of co-enabled transitions 23856 [2022-11-26 01:07:51,252 INFO L134 LiptonReduction]: Checked pairs total: 51449 [2022-11-26 01:07:51,253 INFO L136 LiptonReduction]: Total number of compositions: 190 [2022-11-26 01:07:51,254 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 65 transitions, 151 flow [2022-11-26 01:07:53,132 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38741 states, 37642 states have (on average 3.9567770044099677) internal successors, (148941), 38740 states have internal predecessors, (148941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:53,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:07:53,135 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;@156f661b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:07:53,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-26 01:07:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand has 38741 states, 37642 states have (on average 3.9567770044099677) internal successors, (148941), 38740 states have internal predecessors, (148941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 01:07:53,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:53,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 01:07:53,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-26 01:07:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:53,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1164262237, now seen corresponding path program 1 times [2022-11-26 01:07:53,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:53,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630438677] [2022-11-26 01:07:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:53,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:53,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:53,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630438677] [2022-11-26 01:07:53,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630438677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:53,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:53,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:07:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098874199] [2022-11-26 01:07:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:53,380 INFO L87 Difference]: Start difference. First operand has 38741 states, 37642 states have (on average 3.9567770044099677) internal successors, (148941), 38740 states have internal predecessors, (148941), 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, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:54,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:54,270 INFO L93 Difference]: Finished difference Result 20683 states and 74522 transitions. [2022-11-26 01:07:54,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:54,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 01:07:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:54,524 INFO L225 Difference]: With dead ends: 20683 [2022-11-26 01:07:54,524 INFO L226 Difference]: Without dead ends: 20683 [2022-11-26 01:07:54,524 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 [2022-11-26 01:07:54,531 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:54,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 26 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 01:07:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20683 states. [2022-11-26 01:07:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20683 to 15607. [2022-11-26 01:07:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15607 states, 15551 states have (on average 3.6634943090476497) internal successors, (56971), 15606 states have internal predecessors, (56971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15607 states to 15607 states and 56971 transitions. [2022-11-26 01:07:56,020 INFO L78 Accepts]: Start accepts. Automaton has 15607 states and 56971 transitions. Word has length 5 [2022-11-26 01:07:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:56,020 INFO L495 AbstractCegarLoop]: Abstraction has 15607 states and 56971 transitions. [2022-11-26 01:07:56,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:56,021 INFO L276 IsEmpty]: Start isEmpty. Operand 15607 states and 56971 transitions. [2022-11-26 01:07:56,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 01:07:56,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:56,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:07:56,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:07:56,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err4ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-26 01:07:56,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1830295673, now seen corresponding path program 1 times [2022-11-26 01:07:56,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:56,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53046307] [2022-11-26 01:07:56,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:07:56,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:07:56,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:07:56,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53046307] [2022-11-26 01:07:56,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53046307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:07:56,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:07:56,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:07:56,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281560531] [2022-11-26 01:07:56,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:07:56,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:07:56,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:07:56,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:07:56,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:07:56,098 INFO L87 Difference]: Start difference. First operand 15607 states and 56971 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:07:56,716 INFO L93 Difference]: Finished difference Result 17308 states and 63014 transitions. [2022-11-26 01:07:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:07:56,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-26 01:07:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:07:56,888 INFO L225 Difference]: With dead ends: 17308 [2022-11-26 01:07:56,888 INFO L226 Difference]: Without dead ends: 17308 [2022-11-26 01:07:56,889 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 [2022-11-26 01:07:56,891 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:07:56,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:07:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17308 states. [2022-11-26 01:07:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17308 to 16249. [2022-11-26 01:07:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16249 states, 16197 states have (on average 3.654071741680558) internal successors, (59185), 16248 states have internal predecessors, (59185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16249 states to 16249 states and 59185 transitions. [2022-11-26 01:07:57,768 INFO L78 Accepts]: Start accepts. Automaton has 16249 states and 59185 transitions. Word has length 13 [2022-11-26 01:07:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:07:57,769 INFO L495 AbstractCegarLoop]: Abstraction has 16249 states and 59185 transitions. [2022-11-26 01:07:57,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:07:57,769 INFO L276 IsEmpty]: Start isEmpty. Operand 16249 states and 59185 transitions. [2022-11-26 01:07:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 01:07:57,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:07:57,778 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-26 01:07:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:07:57,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2022-11-26 01:07:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:07:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1856010082, now seen corresponding path program 1 times [2022-11-26 01:07:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:07:57,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265749205] [2022-11-26 01:07:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:07:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:07:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:57,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:07:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:07:57,821 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:07:57,828 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:07:57,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-26 01:07:57,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2022-11-26 01:07:57,829 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2022-11-26 01:07:57,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2022-11-26 01:07:57,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2022-11-26 01:07:57,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2022-11-26 01:07:57,830 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2022-11-26 01:07:57,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2022-11-26 01:07:57,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2022-11-26 01:07:57,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2022-11-26 01:07:57,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2022-11-26 01:07:57,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2022-11-26 01:07:57,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2022-11-26 01:07:57,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2022-11-26 01:07:57,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2022-11-26 01:07:57,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2022-11-26 01:07:57,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2022-11-26 01:07:57,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2022-11-26 01:07:57,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2022-11-26 01:07:57,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2022-11-26 01:07:57,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2022-11-26 01:07:57,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2022-11-26 01:07:57,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2022-11-26 01:07:57,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2022-11-26 01:07:57,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2022-11-26 01:07:57,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2022-11-26 01:07:57,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2022-11-26 01:07:57,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2022-11-26 01:07:57,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2022-11-26 01:07:57,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 01:07:57,841 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 01:07:57,842 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 01:07:57,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-26 01:07:57,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 01:07:58,021 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:07:58,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 257 transitions, 546 flow [2022-11-26 01:07:58,031 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 257 transitions, 546 flow [2022-11-26 01:07:58,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 257 transitions, 546 flow [2022-11-26 01:07:58,107 INFO L130 PetriNetUnfolder]: 17/307 cut-off events. [2022-11-26 01:07:58,108 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-26 01:07:58,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 307 events. 17/307 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 969 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 245. Up to 10 conditions per place. [2022-11-26 01:07:58,132 INFO L119 LiptonReduction]: Number of co-enabled transitions 44576 [2022-11-26 01:08:03,514 INFO L134 LiptonReduction]: Checked pairs total: 92709 [2022-11-26 01:08:03,514 INFO L136 LiptonReduction]: Total number of compositions: 232 [2022-11-26 01:08:03,515 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 88 transitions, 208 flow [2022-11-26 01:08:32,000 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 775061 states, 766279 states have (on average 5.00618051649595) internal successors, (3836131), 775060 states have internal predecessors, (3836131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:08:32,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:08:32,003 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;@156f661b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:08:32,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-11-26 01:08:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 775061 states, 766279 states have (on average 5.00618051649595) internal successors, (3836131), 775060 states have internal predecessors, (3836131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:08:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:08:33,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:08:33,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:08:33,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2022-11-26 01:08:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:08:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 54448121, now seen corresponding path program 1 times [2022-11-26 01:08:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:08:33,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329696023] [2022-11-26 01:08:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:08:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:08:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:08:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 01:08:33,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:08:33,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329696023] [2022-11-26 01:08:33,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329696023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:08:33,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:08:33,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 01:08:33,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95371318] [2022-11-26 01:08:33,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:08:33,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 01:08:33,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:08:33,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 01:08:33,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 01:08:34,429 INFO L87 Difference]: Start difference. First operand has 775061 states, 766279 states have (on average 5.00618051649595) internal successors, (3836131), 775060 states have internal predecessors, (3836131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)