./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/ldv-races/race-1_3b-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-1_3b-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7 --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 c73b137d4d055d601e6891c370b9da4780621da8a7fc8a5ca4886c6b3b685d8b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:49:16,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:49:16,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:49:16,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:49:16,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:49:16,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:49:16,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:49:16,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:49:16,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:49:16,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:49:16,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:49:16,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:49:16,102 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:49:16,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:49:16,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:49:16,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:49:16,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:49:16,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:49:16,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:49:16,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:49:16,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:49:16,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:49:16,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:49:16,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:49:16,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:49:16,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:49:16,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:49:16,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:49:16,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:49:16,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:49:16,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:49:16,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:49:16,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:49:16,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:49:16,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:49:16,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:49:16,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:49:16,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:49:16,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:49:16,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:49:16,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:49:16,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/config/svcomp-DataRace-32bit-Taipan_Default.epf [2021-11-25 19:49:16,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:49:16,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:49:16,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:49:16,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:49:16,212 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:49:16,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:49:16,213 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:49:16,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:49:16,213 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:49:16,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:49:16,215 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:49:16,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:49:16,215 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:49:16,216 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:49:16,216 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:49:16,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:49:16,216 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:49:16,217 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:49:16,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:49:16,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:49:16,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:49:16,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:49:16,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:49:16,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:49:16,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:49:16,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:49:16,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:49:16,219 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2021-11-25 19:49:16,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:49:16,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:49:16,220 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:49:16,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:49:16,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:49:16,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:49:16,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:49:16,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:49:16,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:49:16,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:49:16,222 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:49:16,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:49:16,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:49:16,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:49:16,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:49:16,225 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c73b137d4d055d601e6891c370b9da4780621da8a7fc8a5ca4886c6b3b685d8b [2021-11-25 19:49:16,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:49:16,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:49:16,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:49:16,532 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:49:16,533 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:49:16,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-races/race-1_3b-join.i [2021-11-25 19:49:16,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/data/75618d842/210b788fc2ad48099f6bce2b15b09f32/FLAG2ab710491 [2021-11-25 19:49:17,192 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:49:17,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/sv-benchmarks/c/ldv-races/race-1_3b-join.i [2021-11-25 19:49:17,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/data/75618d842/210b788fc2ad48099f6bce2b15b09f32/FLAG2ab710491 [2021-11-25 19:49:17,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/data/75618d842/210b788fc2ad48099f6bce2b15b09f32 [2021-11-25 19:49:17,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:49:17,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:49:17,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:49:17,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:49:17,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:49:17,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:49:17" (1/1) ... [2021-11-25 19:49:17,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b3d8b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:17, skipping insertion in model container [2021-11-25 19:49:17,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:49:17" (1/1) ... [2021-11-25 19:49:17,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:49:17,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:49:18,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/sv-benchmarks/c/ldv-races/race-1_3b-join.i[76069,76082] [2021-11-25 19:49:18,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:49:18,349 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:49:18,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/sv-benchmarks/c/ldv-races/race-1_3b-join.i[76069,76082] [2021-11-25 19:49:18,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:49:18,658 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:49:18,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18 WrapperNode [2021-11-25 19:49:18,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:49:18,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:49:18,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:49:18,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:49:18,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,767 INFO L137 Inliner]: procedures = 480, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2021-11-25 19:49:18,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:49:18,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:49:18,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:49:18,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:49:18,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:49:18,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:49:18,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:49:18,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:49:18,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (1/1) ... [2021-11-25 19:49:18,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:49:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:49:18,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:49:18,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:49:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:49:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:49:18,965 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-25 19:49:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:49:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:49:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:49:18,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:49:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:49:18,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 19:49:18,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 19:49:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:49:18,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:49:18,968 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 19:49:19,294 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:49:19,296 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:49:19,562 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:49:19,571 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:49:19,572 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 19:49:19,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:49:19 BoogieIcfgContainer [2021-11-25 19:49:19,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:49:19,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:49:19,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:49:19,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:49:19,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:49:17" (1/3) ... [2021-11-25 19:49:19,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a0ecd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:49:19, skipping insertion in model container [2021-11-25 19:49:19,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:49:18" (2/3) ... [2021-11-25 19:49:19,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a0ecd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:49:19, skipping insertion in model container [2021-11-25 19:49:19,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:49:19" (3/3) ... [2021-11-25 19:49:19,611 INFO L111 eAbstractionObserver]: Analyzing ICFG race-1_3b-join.i [2021-11-25 19:49:19,616 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 19:49:19,616 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:49:19,616 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-25 19:49:19,616 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 19:49:19,689 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,692 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,692 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,692 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,693 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,693 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,693 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,694 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,695 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,696 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,701 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,701 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,701 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,702 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 19:49:19,725 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-11-25 19:49:19,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:49:19,797 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:49:19,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-25 19:49:19,813 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 19:49:19,825 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 153 transitions, 314 flow [2021-11-25 19:49:19,829 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 153 transitions, 314 flow [2021-11-25 19:49:19,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 151 places, 153 transitions, 314 flow [2021-11-25 19:49:19,908 INFO L129 PetriNetUnfolder]: 6/191 cut-off events. [2021-11-25 19:49:19,909 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-25 19:49:19,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 6/191 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 258 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2021-11-25 19:49:19,917 INFO L116 LiptonReduction]: Number of co-enabled transitions 1008 [2021-11-25 19:49:25,510 INFO L131 LiptonReduction]: Checked pairs total: 2444 [2021-11-25 19:49:25,510 INFO L133 LiptonReduction]: Total number of compositions: 185 [2021-11-25 19:49:25,531 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 26 transitions, 60 flow [2021-11-25 19:49:25,553 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 73 states, 54 states have (on average 2.074074074074074) internal successors, (112), 72 states have internal predecessors, (112), 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) [2021-11-25 19:49:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 54 states have (on average 2.074074074074074) internal successors, (112), 72 states have internal predecessors, (112), 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) [2021-11-25 19:49:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-11-25 19:49:25,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:25,562 INFO L514 BasicCegarLoop]: trace histogram [1] [2021-11-25 19:49:25,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2021-11-25 19:49:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:25,568 INFO L85 PathProgramCache]: Analyzing trace with hash 559, now seen corresponding path program 1 times [2021-11-25 19:49:25,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:25,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265439592] [2021-11-25 19:49:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:25,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:49:25,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:25,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265439592] [2021-11-25 19:49:25,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265439592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:25,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:25,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-11-25 19:49:25,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113372241] [2021-11-25 19:49:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:25,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:49:25,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:49:25,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:49:25,845 INFO L87 Difference]: Start difference. First operand has 73 states, 54 states have (on average 2.074074074074074) internal successors, (112), 72 states have internal predecessors, (112), 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 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-11-25 19:49:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:25,888 INFO L93 Difference]: Finished difference Result 61 states and 96 transitions. [2021-11-25 19:49:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:49:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2021-11-25 19:49:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:25,902 INFO L225 Difference]: With dead ends: 61 [2021-11-25 19:49:25,903 INFO L226 Difference]: Without dead ends: 57 [2021-11-25 19:49:25,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:49:25,910 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:25,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-25 19:49:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-25 19:49:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.836734693877551) internal successors, (90), 56 states have internal predecessors, (90), 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) [2021-11-25 19:49:25,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 90 transitions. [2021-11-25 19:49:25,965 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 90 transitions. Word has length 1 [2021-11-25 19:49:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:25,966 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 90 transitions. [2021-11-25 19:49:25,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2021-11-25 19:49:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 90 transitions. [2021-11-25 19:49:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:49:25,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:25,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:49:25,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:49:25,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2021-11-25 19:49:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash 17336282, now seen corresponding path program 1 times [2021-11-25 19:49:25,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584025656] [2021-11-25 19:49:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:25,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:49:26,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:26,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584025656] [2021-11-25 19:49:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584025656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:26,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:26,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:49:26,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816169316] [2021-11-25 19:49:26,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:26,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:49:26,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:49:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:26,208 INFO L87 Difference]: Start difference. First operand 57 states and 90 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:49:26,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:26,234 INFO L93 Difference]: Finished difference Result 51 states and 84 transitions. [2021-11-25 19:49:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:49:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 19:49:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:26,236 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:49:26,236 INFO L226 Difference]: Without dead ends: 50 [2021-11-25 19:49:26,236 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:49:26,238 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:26,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:26,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-25 19:49:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-25 19:49:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.8863636363636365) internal successors, (83), 49 states have internal predecessors, (83), 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) [2021-11-25 19:49:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2021-11-25 19:49:26,246 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 4 [2021-11-25 19:49:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:26,246 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2021-11-25 19:49:26,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:49:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2021-11-25 19:49:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:49:26,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:26,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:49:26,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:49:26,248 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2021-11-25 19:49:26,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:26,249 INFO L85 PathProgramCache]: Analyzing trace with hash 534589083, now seen corresponding path program 1 times [2021-11-25 19:49:26,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:26,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157432249] [2021-11-25 19:49:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:26,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:49:26,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:26,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157432249] [2021-11-25 19:49:26,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157432249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:26,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:26,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:49:26,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793379225] [2021-11-25 19:49:26,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:26,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:49:26,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:26,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:49:26,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:26,321 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. 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) [2021-11-25 19:49:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:26,387 INFO L93 Difference]: Finished difference Result 52 states and 85 transitions. [2021-11-25 19:49:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:49:26,388 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 [2021-11-25 19:49:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:26,389 INFO L225 Difference]: With dead ends: 52 [2021-11-25 19:49:26,389 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 19:49:26,389 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:49:26,391 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:26,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:49:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 19:49:26,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-25 19:49:26,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.829268292682927) internal successors, (75), 45 states have internal predecessors, (75), 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) [2021-11-25 19:49:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 75 transitions. [2021-11-25 19:49:26,399 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 75 transitions. Word has length 5 [2021-11-25 19:49:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:26,399 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 75 transitions. [2021-11-25 19:49:26,399 INFO L471 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) [2021-11-25 19:49:26,400 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 75 transitions. [2021-11-25 19:49:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:49:26,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:26,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:49:26,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:49:26,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2021-11-25 19:49:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:26,402 INFO L85 PathProgramCache]: Analyzing trace with hash -607465665, now seen corresponding path program 1 times [2021-11-25 19:49:26,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:26,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456746614] [2021-11-25 19:49:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:26,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:49:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:49:26,502 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:49:26,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456746614] [2021-11-25 19:49:26,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456746614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:49:26,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:49:26,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:49:26,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363122468] [2021-11-25 19:49:26,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:49:26,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:49:26,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:49:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:49:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:49:26,505 INFO L87 Difference]: Start difference. First operand 46 states and 75 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-25 19:49:26,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:49:26,541 INFO L93 Difference]: Finished difference Result 43 states and 68 transitions. [2021-11-25 19:49:26,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:49:26,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-11-25 19:49:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:49:26,548 INFO L225 Difference]: With dead ends: 43 [2021-11-25 19:49:26,548 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 19:49:26,549 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:49:26,552 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:49:26,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:49:26,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 19:49:26,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-25 19:49:26,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 42 states have internal predecessors, (68), 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) [2021-11-25 19:49:26,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 68 transitions. [2021-11-25 19:49:26,571 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 68 transitions. Word has length 6 [2021-11-25 19:49:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:49:26,571 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 68 transitions. [2021-11-25 19:49:26,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-25 19:49:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 68 transitions. [2021-11-25 19:49:26,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:49:26,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:49:26,572 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:49:26,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:49:26,573 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2021-11-25 19:49:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:49:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash 280188120, now seen corresponding path program 1 times [2021-11-25 19:49:26,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:49:26,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432972300] [2021-11-25 19:49:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:49:26,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:49:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:49:26,611 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 19:49:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 19:49:26,648 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 19:49:26,648 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 19:49:26,650 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 12 remaining) [2021-11-25 19:49:26,651 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2021-11-25 19:49:26,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2021-11-25 19:49:26,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2021-11-25 19:49:26,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2021-11-25 19:49:26,652 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2021-11-25 19:49:26,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2021-11-25 19:49:26,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2021-11-25 19:49:26,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2021-11-25 19:49:26,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2021-11-25 19:49:26,653 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 12 remaining) [2021-11-25 19:49:26,654 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2021-11-25 19:49:26,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:49:26,656 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-25 19:49:26,662 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-25 19:49:26,662 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:49:26,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:49:26 BasicIcfg [2021-11-25 19:49:26,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:49:26,689 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:49:26,689 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:49:26,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:49:26,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:49:19" (3/4) ... [2021-11-25 19:49:26,692 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 19:49:26,692 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:49:26,693 INFO L158 Benchmark]: Toolchain (without parser) took 9245.08ms. Allocated memory was 96.5MB in the beginning and 167.8MB in the end (delta: 71.3MB). Free memory was 73.3MB in the beginning and 102.9MB in the end (delta: -29.6MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2021-11-25 19:49:26,693 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:49:26,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1210.02ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 73.1MB in the beginning and 88.2MB in the end (delta: -15.1MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2021-11-25 19:49:26,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 108.32ms. Allocated memory is still 130.0MB. Free memory was 88.2MB in the beginning and 85.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:49:26,695 INFO L158 Benchmark]: Boogie Preprocessor took 76.07ms. Allocated memory is still 130.0MB. Free memory was 85.1MB in the beginning and 82.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 19:49:26,695 INFO L158 Benchmark]: RCFGBuilder took 744.09ms. Allocated memory is still 130.0MB. Free memory was 82.5MB in the beginning and 64.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 19:49:26,695 INFO L158 Benchmark]: TraceAbstraction took 7097.52ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 64.2MB in the beginning and 104.0MB in the end (delta: -39.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:49:26,696 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 102.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:49:26,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1210.02ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 73.1MB in the beginning and 88.2MB in the end (delta: -15.1MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 108.32ms. Allocated memory is still 130.0MB. Free memory was 88.2MB in the beginning and 85.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.07ms. Allocated memory is still 130.0MB. Free memory was 85.1MB in the beginning and 82.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 744.09ms. Allocated memory is still 130.0MB. Free memory was 82.5MB in the beginning and 64.7MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7097.52ms. Allocated memory was 130.0MB in the beginning and 167.8MB in the end (delta: 37.7MB). Free memory was 64.2MB in the beginning and 104.0MB in the end (delta: -39.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 167.8MB. Free memory was 104.0MB in the beginning and 102.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 151 PlacesBefore, 28 PlacesAfterwards, 153 TransitionsBefore, 26 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 10 FixpointIterations, 115 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 185 TotalNumberOfCompositions, 2444 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1372, positive: 1155, positive conditional: 0, positive unconditional: 1155, negative: 217, negative conditional: 0, negative unconditional: 217, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 779, positive: 734, positive conditional: 0, positive unconditional: 734, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 779, positive: 717, positive conditional: 0, positive unconditional: 717, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1372, positive: 421, positive conditional: 0, positive unconditional: 421, negative: 172, negative conditional: 0, negative unconditional: 172, unknown: 779, unknown conditional: 0, unknown unconditional: 779] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 1718]: Data race detected Data race detected The following path leads to a data race: [L1694] 0 pthread_t t1; [L1695] 0 pthread_mutex_t mutex; [L1696] 0 int pdev; [L1726] CALL, EXPR 0 module_init() [L1705] 0 pdev = 1 [L1706] EXPR 0 pdev==1 [L1706] CALL 0 ldv_assert(pdev==1) [L1693] COND FALSE 0 !(!expression) [L1706] RET 0 ldv_assert(pdev==1) [L1707] COND TRUE 0 __VERIFIER_nondet_int() [L1708] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1699] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1709] 0 return 0; [L1726] RET, EXPR 0 module_init() [L1726] COND FALSE 0 !(module_init()!=0) [L1727] CALL 0 module_exit() [L1717] 0 void *status; [L1718] 0 pdev = 4 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=4, pdev = 4=1151, status={5:0}, t1={3:0}] [L1718] 0 pdev = 4 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=4, pdev = 4=1151, pdev = 6=1153, status={5:0}, t1={3:0}] Now there is a data race on ~pdev~0 between C: pdev = 6 [1699] and C: pdev = 4 [1718] - UnprovableResult [Line: 1699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1720]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1722]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1723]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1708]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 162 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-25 19:49:26,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e987d78-9a30-42f9-8e01-1bff9d958504/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE