./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.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_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/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_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/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_981577cb-88b6-40cf-8cbb-24d1651c193c/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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --- 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 01:04:51,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 01:04:51,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 01:04:51,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 01:04:51,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 01:04:51,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 01:04:51,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 01:04:51,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 01:04:51,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 01:04:51,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 01:04:51,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 01:04:51,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 01:04:51,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 01:04:51,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 01:04:51,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 01:04:51,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 01:04:51,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 01:04:51,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 01:04:51,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 01:04:51,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 01:04:51,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 01:04:51,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 01:04:51,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 01:04:51,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 01:04:51,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 01:04:51,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 01:04:51,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 01:04:51,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 01:04:51,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 01:04:51,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 01:04:51,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 01:04:51,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 01:04:51,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 01:04:51,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 01:04:51,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 01:04:51,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 01:04:51,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 01:04:51,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 01:04:51,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 01:04:51,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 01:04:51,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 01:04:51,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-26 01:04:51,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 01:04:51,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 01:04:51,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 01:04:51,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 01:04:51,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 01:04:51,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 01:04:51,165 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 01:04:51,165 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 01:04:51,165 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 01:04:51,166 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 01:04:51,166 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 01:04:51,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 01:04:51,166 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 01:04:51,167 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 01:04:51,167 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 01:04:51,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 01:04:51,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 01:04:51,168 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 01:04:51,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 01:04:51,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 01:04:51,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 01:04:51,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 01:04:51,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 01:04:51,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 01:04:51,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 01:04:51,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 01:04:51,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 01:04:51,170 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-26 01:04:51,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 01:04:51,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 01:04:51,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 01:04:51,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 01:04:51,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 01:04:51,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 01:04:51,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:04:51,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 01:04:51,172 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 01:04:51,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 01:04:51,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 01:04:51,173 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 01:04:51,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 01:04:51,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 01:04:51,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 01:04:51,174 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_981577cb-88b6-40cf-8cbb-24d1651c193c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 [2022-11-26 01:04:51,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 01:04:51,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 01:04:51,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 01:04:51,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 01:04:51,428 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 01:04:51,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-26 01:04:54,672 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 01:04:54,968 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 01:04:54,971 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i [2022-11-26 01:04:54,991 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/data/3c70f85be/555e0805024e469cb8ee9dd50a363d52/FLAG818232272 [2022-11-26 01:04:55,019 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/data/3c70f85be/555e0805024e469cb8ee9dd50a363d52 [2022-11-26 01:04:55,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 01:04:55,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 01:04:55,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 01:04:55,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 01:04:55,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 01:04:55,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce189aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55, skipping insertion in model container [2022-11-26 01:04:55,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 01:04:55,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 01:04:55,472 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_981577cb-88b6-40cf-8cbb-24d1651c193c/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-26 01:04:55,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:04:55,519 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 01:04:55,577 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_981577cb-88b6-40cf-8cbb-24d1651c193c/sv-benchmarks/c/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2022-11-26 01:04:55,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 01:04:55,646 INFO L208 MainTranslator]: Completed translation [2022-11-26 01:04:55,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55 WrapperNode [2022-11-26 01:04:55,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 01:04:55,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 01:04:55,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 01:04:55,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 01:04:55,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,704 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2022-11-26 01:04:55,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 01:04:55,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 01:04:55,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 01:04:55,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 01:04:55,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 01:04:55,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 01:04:55,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 01:04:55,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 01:04:55,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (1/1) ... [2022-11-26 01:04:55,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 01:04:55,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 01:04:55,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 01:04:55,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_981577cb-88b6-40cf-8cbb-24d1651c193c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 01:04:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 01:04:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 01:04:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 01:04:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 01:04:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 01:04:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-26 01:04:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-26 01:04:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 01:04:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 01:04:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 01:04:55,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 01:04:55,855 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 01:04:55,995 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 01:04:55,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 01:04:56,296 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 01:04:56,304 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 01:04:56,304 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-26 01:04:56,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:04:56 BoogieIcfgContainer [2022-11-26 01:04:56,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 01:04:56,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 01:04:56,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 01:04:56,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 01:04:56,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 01:04:55" (1/3) ... [2022-11-26 01:04:56,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5008bc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:04:56, skipping insertion in model container [2022-11-26 01:04:56,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 01:04:55" (2/3) ... [2022-11-26 01:04:56,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5008bc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 01:04:56, skipping insertion in model container [2022-11-26 01:04:56,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 01:04:56" (3/3) ... [2022-11-26 01:04:56,318 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2022-11-26 01:04:56,326 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 01:04:56,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 01:04:56,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-26 01:04:56,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 01:04:56,443 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-26 01:04:56,488 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:04:56,513 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 136 transitions, 280 flow [2022-11-26 01:04:56,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 136 transitions, 280 flow [2022-11-26 01:04:56,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2022-11-26 01:04:56,713 INFO L130 PetriNetUnfolder]: 17/180 cut-off events. [2022-11-26 01:04:56,714 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-26 01:04:56,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 180 events. 17/180 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 513 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-11-26 01:04:56,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 4400 [2022-11-26 01:05:01,312 INFO L134 LiptonReduction]: Checked pairs total: 10281 [2022-11-26 01:05:01,313 INFO L136 LiptonReduction]: Total number of compositions: 124 [2022-11-26 01:05:01,322 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 45 transitions, 98 flow [2022-11-26 01:05:01,374 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 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 01:05:01,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:05:01,412 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;@55fde92d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:05:01,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-26 01:05:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 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 01:05:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:05:01,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:01,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:05:01,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-26 01:05:01,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:01,430 INFO L85 PathProgramCache]: Analyzing trace with hash 16005738, now seen corresponding path program 1 times [2022-11-26 01:05:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:01,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917645948] [2022-11-26 01:05:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:01,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:05:01,682 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 01:05:01,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:05:01,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917645948] [2022-11-26 01:05:01,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917645948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:05:01,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:05:01,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:05:01,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254971106] [2022-11-26 01:05:01,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:05:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:05:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:05:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:05:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:05:01,729 INFO L87 Difference]: Start difference. First operand has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:01,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:05:01,848 INFO L93 Difference]: Finished difference Result 258 states and 478 transitions. [2022-11-26 01:05:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:05:01,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:05:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:05:01,861 INFO L225 Difference]: With dead ends: 258 [2022-11-26 01:05:01,861 INFO L226 Difference]: Without dead ends: 237 [2022-11-26 01:05:01,862 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 01:05:01,865 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:05:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:05:01,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-26 01:05:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-26 01:05:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 227 states have (on average 1.933920704845815) internal successors, (439), 236 states have internal predecessors, (439), 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 01:05:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 439 transitions. [2022-11-26 01:05:01,915 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 439 transitions. Word has length 4 [2022-11-26 01:05:01,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:05:01,915 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 439 transitions. [2022-11-26 01:05:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 439 transitions. [2022-11-26 01:05:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 01:05:01,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:01,916 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 01:05:01,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 01:05:01,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-11-26 01:05:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:01,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1813956123, now seen corresponding path program 1 times [2022-11-26 01:05:01,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:01,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563125927] [2022-11-26 01:05:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:01,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:01,948 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:05:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:01,985 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:05:01,985 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:05:01,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-11-26 01:05:01,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-11-26 01:05:01,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-11-26 01:05:01,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-11-26 01:05:01,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-11-26 01:05:01,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-11-26 01:05:01,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-11-26 01:05:01,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-11-26 01:05:01,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-11-26 01:05:01,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-11-26 01:05:01,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-11-26 01:05:01,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 01:05:01,994 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 01:05:01,996 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 01:05:01,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-26 01:05:02,018 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 01:05:02,022 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:05:02,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 182 transitions, 382 flow [2022-11-26 01:05:02,022 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 182 transitions, 382 flow [2022-11-26 01:05:02,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 182 transitions, 382 flow [2022-11-26 01:05:02,087 INFO L130 PetriNetUnfolder]: 31/301 cut-off events. [2022-11-26 01:05:02,087 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-26 01:05:02,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 31/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1034 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 182. Up to 8 conditions per place. [2022-11-26 01:05:02,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 13640 [2022-11-26 01:05:06,609 INFO L134 LiptonReduction]: Checked pairs total: 57952 [2022-11-26 01:05:06,609 INFO L136 LiptonReduction]: Total number of compositions: 152 [2022-11-26 01:05:06,613 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 82 transitions, 182 flow [2022-11-26 01:05:06,967 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 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 01:05:06,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:05:06,976 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;@55fde92d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:05:06,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-11-26 01:05:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 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 01:05:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:05:07,014 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:07,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:05:07,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-26 01:05:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 27390853, now seen corresponding path program 1 times [2022-11-26 01:05:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:07,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373696307] [2022-11-26 01:05:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:05:07,065 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 01:05:07,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:05:07,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373696307] [2022-11-26 01:05:07,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373696307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:05:07,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:05:07,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:05:07,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315276569] [2022-11-26 01:05:07,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:05:07,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:05:07,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:05:07,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:05:07,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:05:07,087 INFO L87 Difference]: Start difference. First operand has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:05:07,283 INFO L93 Difference]: Finished difference Result 9151 states and 25643 transitions. [2022-11-26 01:05:07,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:05:07,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:05:07,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:05:07,340 INFO L225 Difference]: With dead ends: 9151 [2022-11-26 01:05:07,340 INFO L226 Difference]: Without dead ends: 9054 [2022-11-26 01:05:07,341 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 01:05:07,342 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:05:07,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 64 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:05:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9054 states. [2022-11-26 01:05:07,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 9054. [2022-11-26 01:05:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9054 states, 8943 states have (on average 2.8396511237839652) internal successors, (25395), 9053 states have internal predecessors, (25395), 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 01:05:07,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 25395 transitions. [2022-11-26 01:05:07,786 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 25395 transitions. Word has length 4 [2022-11-26 01:05:07,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:05:07,787 INFO L495 AbstractCegarLoop]: Abstraction has 9054 states and 25395 transitions. [2022-11-26 01:05:07,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 25395 transitions. [2022-11-26 01:05:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:05:07,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:07,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:05:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 01:05:07,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-26 01:05:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1313402897, now seen corresponding path program 1 times [2022-11-26 01:05:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:07,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609413127] [2022-11-26 01:05:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:05:07,886 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 01:05:07,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:05:07,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609413127] [2022-11-26 01:05:07,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609413127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:05:07,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:05:07,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:05:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745528830] [2022-11-26 01:05:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:05:07,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:05:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:05:07,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:05:07,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:05:07,890 INFO L87 Difference]: Start difference. First operand 9054 states and 25395 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:08,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:05:08,139 INFO L93 Difference]: Finished difference Result 12547 states and 34036 transitions. [2022-11-26 01:05:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:05:08,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:05:08,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:05:08,326 INFO L225 Difference]: With dead ends: 12547 [2022-11-26 01:05:08,326 INFO L226 Difference]: Without dead ends: 12511 [2022-11-26 01:05:08,327 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 01:05:08,335 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 51 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:05:08,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 52 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:05:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12511 states. [2022-11-26 01:05:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12511 to 9354. [2022-11-26 01:05:08,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9354 states, 9261 states have (on average 2.7816650469711695) internal successors, (25761), 9353 states have internal predecessors, (25761), 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 01:05:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9354 states to 9354 states and 25761 transitions. [2022-11-26 01:05:08,804 INFO L78 Accepts]: Start accepts. Automaton has 9354 states and 25761 transitions. Word has length 8 [2022-11-26 01:05:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:05:08,804 INFO L495 AbstractCegarLoop]: Abstraction has 9354 states and 25761 transitions. [2022-11-26 01:05:08,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 9354 states and 25761 transitions. [2022-11-26 01:05:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 01:05:08,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:08,806 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 01:05:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 01:05:08,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-26 01:05:08,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1124445013, now seen corresponding path program 1 times [2022-11-26 01:05:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:08,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715162195] [2022-11-26 01:05:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:08,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 01:05:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 01:05:08,845 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 01:05:08,846 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 01:05:08,846 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-11-26 01:05:08,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-11-26 01:05:08,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-11-26 01:05:08,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-11-26 01:05:08,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-11-26 01:05:08,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-11-26 01:05:08,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-11-26 01:05:08,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-11-26 01:05:08,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-11-26 01:05:08,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-11-26 01:05:08,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-11-26 01:05:08,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-11-26 01:05:08,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-11-26 01:05:08,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-11-26 01:05:08,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-11-26 01:05:08,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 01:05:08,851 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 01:05:08,851 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 01:05:08,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-26 01:05:08,875 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-26 01:05:08,878 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 01:05:08,878 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 228 transitions, 486 flow [2022-11-26 01:05:08,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 228 transitions, 486 flow [2022-11-26 01:05:08,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 228 transitions, 486 flow [2022-11-26 01:05:09,006 INFO L130 PetriNetUnfolder]: 50/467 cut-off events. [2022-11-26 01:05:09,006 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-26 01:05:09,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 467 events. 50/467 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1786 event pairs, 1 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2022-11-26 01:05:09,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 26664 [2022-11-26 01:05:14,629 INFO L134 LiptonReduction]: Checked pairs total: 128671 [2022-11-26 01:05:14,630 INFO L136 LiptonReduction]: Total number of compositions: 186 [2022-11-26 01:05:14,631 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 113 transitions, 256 flow [2022-11-26 01:05:22,835 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 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 01:05:22,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 01:05:22,846 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;@55fde92d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 01:05:22,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-26 01:05:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 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 01:05:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 01:05:24,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:24,057 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 01:05:24,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-26 01:05:24,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash 41534618, now seen corresponding path program 1 times [2022-11-26 01:05:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:24,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399181760] [2022-11-26 01:05:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:05:24,130 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 01:05:24,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:05:24,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399181760] [2022-11-26 01:05:24,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399181760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:05:24,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:05:24,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:05:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546432382] [2022-11-26 01:05:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:05:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:05:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:05:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:05:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:05:24,549 INFO L87 Difference]: Start difference. First operand has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:28,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:05:28,231 INFO L93 Difference]: Finished difference Result 222967 states and 835279 transitions. [2022-11-26 01:05:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:05:28,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-26 01:05:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:05:32,066 INFO L225 Difference]: With dead ends: 222967 [2022-11-26 01:05:32,066 INFO L226 Difference]: Without dead ends: 222585 [2022-11-26 01:05:32,067 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 01:05:32,068 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 01:05:32,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 92 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 01:05:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222585 states. [2022-11-26 01:05:42,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222585 to 222585. [2022-11-26 01:05:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222585 states, 221973 states have (on average 3.757258765705739) internal successors, (834010), 222584 states have internal predecessors, (834010), 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 01:05:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222585 states to 222585 states and 834010 transitions. [2022-11-26 01:05:45,208 INFO L78 Accepts]: Start accepts. Automaton has 222585 states and 834010 transitions. Word has length 4 [2022-11-26 01:05:45,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 01:05:45,208 INFO L495 AbstractCegarLoop]: Abstraction has 222585 states and 834010 transitions. [2022-11-26 01:05:45,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:45,208 INFO L276 IsEmpty]: Start isEmpty. Operand 222585 states and 834010 transitions. [2022-11-26 01:05:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 01:05:45,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 01:05:45,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 01:05:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 01:05:45,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-26 01:05:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 01:05:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash -68855302, now seen corresponding path program 1 times [2022-11-26 01:05:45,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 01:05:45,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337847932] [2022-11-26 01:05:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 01:05:45,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 01:05:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 01:05:45,251 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 01:05:45,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 01:05:45,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337847932] [2022-11-26 01:05:45,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337847932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 01:05:45,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 01:05:45,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 01:05:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743565569] [2022-11-26 01:05:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 01:05:45,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 01:05:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 01:05:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 01:05:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:05:45,255 INFO L87 Difference]: Start difference. First operand 222585 states and 834010 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 01:05:50,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 01:05:50,539 INFO L93 Difference]: Finished difference Result 360725 states and 1300752 transitions. [2022-11-26 01:05:50,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 01:05:50,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-26 01:05:50,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 01:05:54,992 INFO L225 Difference]: With dead ends: 360725 [2022-11-26 01:05:54,993 INFO L226 Difference]: Without dead ends: 360608 [2022-11-26 01:05:54,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 01:05:54,994 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 70 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 01:05:54,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 70 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 01:05:56,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360608 states.