./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- 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-b5237d8 [2022-11-22 02:38:13,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:38:13,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:38:13,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:38:13,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:38:13,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:38:13,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:38:13,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:38:13,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:38:13,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:38:13,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:38:13,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:38:13,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:38:13,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:38:13,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:38:13,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:38:13,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:38:13,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:38:13,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:38:13,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:38:13,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:38:13,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:38:13,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:38:13,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:38:13,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:38:13,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:38:13,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:38:13,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:38:13,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:38:13,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:38:13,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:38:13,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:38:13,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:38:13,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:38:13,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:38:13,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:38:13,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:38:13,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:38:13,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:38:13,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:38:13,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:38:13,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 02:38:13,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:38:13,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:38:13,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:38:13,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:38:13,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:38:13,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:38:13,888 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:38:13,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:38:13,889 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:38:13,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:38:13,889 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:38:13,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:38:13,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:38:13,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:38:13,890 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:38:13,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:38:13,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:38:13,890 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:38:13,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:38:13,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:38:13,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:38:13,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:38:13,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:38:13,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:38:13,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:38:13,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:38:13,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:38:13,899 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 02:38:13,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:38:13,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:38:13,900 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:38:13,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:38:13,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:38:13,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:38:13,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:38:13,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:38:13,903 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:38:13,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:38:13,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:38:13,904 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:38:13,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:38:13,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:38:13,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:38:13,904 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_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2022-11-22 02:38:14,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:38:14,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:38:14,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:38:14,167 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:38:14,168 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:38:14,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread/queue.i [2022-11-22 02:38:17,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:38:17,672 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:38:17,672 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i [2022-11-22 02:38:17,692 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/data/c7db635a3/1f47960f5a1d4688ac69d153018a71eb/FLAG3b60f51ab [2022-11-22 02:38:17,705 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/data/c7db635a3/1f47960f5a1d4688ac69d153018a71eb [2022-11-22 02:38:17,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:38:17,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:38:17,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:38:17,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:38:17,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:38:17,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:38:17" (1/1) ... [2022-11-22 02:38:17,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@186929fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:17, skipping insertion in model container [2022-11-22 02:38:17,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:38:17" (1/1) ... [2022-11-22 02:38:17,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:38:17,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:38:18,332 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_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-22 02:38:18,335 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_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-22 02:38:18,339 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_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-22 02:38:18,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:38:18,355 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:38:18,413 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_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-22 02:38:18,415 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_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-22 02:38:18,419 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_856a0580-1b67-4909-a0d3-3cb58e552a16/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-22 02:38:18,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:38:18,533 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:38:18,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18 WrapperNode [2022-11-22 02:38:18,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:38:18,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:38:18,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:38:18,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:38:18,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,679 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 490 [2022-11-22 02:38:18,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:38:18,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:38:18,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:38:18,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:38:18,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:38:18,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:38:18,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:38:18,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:38:18,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (1/1) ... [2022-11-22 02:38:18,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:38:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:38:18,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:38:18,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856a0580-1b67-4909-a0d3-3cb58e552a16/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:38:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-22 02:38:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-22 02:38:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-22 02:38:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-22 02:38:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:38:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:38:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:38:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:38:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 02:38:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:38:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:38:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:38:18,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:38:18,887 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:38:19,148 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:38:19,150 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:38:20,140 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:38:20,164 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:38:20,169 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:38:20,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:38:20 BoogieIcfgContainer [2022-11-22 02:38:20,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:38:20,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:38:20,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:38:20,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:38:20,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:38:17" (1/3) ... [2022-11-22 02:38:20,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4704f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:38:20, skipping insertion in model container [2022-11-22 02:38:20,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:38:18" (2/3) ... [2022-11-22 02:38:20,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4704f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:38:20, skipping insertion in model container [2022-11-22 02:38:20,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:38:20" (3/3) ... [2022-11-22 02:38:20,189 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-11-22 02:38:20,198 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:38:20,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:38:20,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-22 02:38:20,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:38:20,390 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 02:38:20,459 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:38:20,473 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 553 places, 561 transitions, 1138 flow [2022-11-22 02:38:20,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 553 places, 561 transitions, 1138 flow [2022-11-22 02:38:20,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 553 places, 561 transitions, 1138 flow [2022-11-22 02:38:20,730 INFO L130 PetriNetUnfolder]: 15/559 cut-off events. [2022-11-22 02:38:20,731 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 02:38:20,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 559 events. 15/559 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 781 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 421. Up to 2 conditions per place. [2022-11-22 02:38:20,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 83848 [2022-11-22 02:39:10,286 WARN L233 SmtUtils]: Spent 12.64s on a formula simplification. DAG size of input: 196 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:39:17,275 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:39:34,100 WARN L233 SmtUtils]: Spent 16.82s on a formula simplification. DAG size of input: 196 DAG size of output: 192 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:39:40,140 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:39:53,204 WARN L233 SmtUtils]: Spent 13.02s on a formula simplification. DAG size of input: 245 DAG size of output: 237 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:40:24,061 WARN L233 SmtUtils]: Spent 26.75s on a formula simplification. DAG size of input: 249 DAG size of output: 241 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:40:39,997 WARN L233 SmtUtils]: Spent 15.93s on a formula simplification that was a NOOP. DAG size: 233 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-22 02:40:40,633 INFO L134 LiptonReduction]: Checked pairs total: 1473939 [2022-11-22 02:40:40,634 INFO L136 LiptonReduction]: Total number of compositions: 380 [2022-11-22 02:40:40,648 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 274 places, 277 transitions, 570 flow [2022-11-22 02:40:44,444 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 102084 states, 101441 states have (on average 2.947752880985006) internal successors, (299023), 102083 states have internal predecessors, (299023), 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) [2022-11-22 02:40:44,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:44,487 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;@5d07c165, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:44,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2022-11-22 02:40:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 102084 states, 101441 states have (on average 2.947752880985006) internal successors, (299023), 102083 states have internal predecessors, (299023), 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) [2022-11-22 02:40:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 02:40:44,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:44,820 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 02:40:44,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-22 02:40:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:44,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1983, now seen corresponding path program 1 times [2022-11-22 02:40:44,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:44,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426995432] [2022-11-22 02:40:44,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:45,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:45,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426995432] [2022-11-22 02:40:45,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426995432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:45,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:45,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 02:40:45,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253204859] [2022-11-22 02:40:45,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:45,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:40:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:40:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:40:45,252 INFO L87 Difference]: Start difference. First operand has 102084 states, 101441 states have (on average 2.947752880985006) internal successors, (299023), 102083 states have internal predecessors, (299023), 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) [2022-11-22 02:40:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:47,394 INFO L93 Difference]: Finished difference Result 102077 states and 297102 transitions. [2022-11-22 02:40:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:40:47,398 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 [2022-11-22 02:40:47,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:48,300 INFO L225 Difference]: With dead ends: 102077 [2022-11-22 02:40:48,302 INFO L226 Difference]: Without dead ends: 102077 [2022-11-22 02:40:48,303 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:40:48,313 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:48,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 177 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102077 states. [2022-11-22 02:40:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102077 to 102077. [2022-11-22 02:40:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102077 states, 101441 states have (on average 2.928815764828817) internal successors, (297102), 102076 states have internal predecessors, (297102), 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) [2022-11-22 02:40:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102077 states to 102077 states and 297102 transitions. [2022-11-22 02:40:54,135 INFO L78 Accepts]: Start accepts. Automaton has 102077 states and 297102 transitions. Word has length 1 [2022-11-22 02:40:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:54,136 INFO L495 AbstractCegarLoop]: Abstraction has 102077 states and 297102 transitions. [2022-11-22 02:40:54,136 INFO L496 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) [2022-11-22 02:40:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 102077 states and 297102 transitions. [2022-11-22 02:40:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:40:54,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:54,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:40:54,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-22 02:40:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash -661351403, now seen corresponding path program 1 times [2022-11-22 02:40:54,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:54,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677184250] [2022-11-22 02:40:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:54,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:54,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677184250] [2022-11-22 02:40:54,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677184250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:54,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:54,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:54,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675136519] [2022-11-22 02:40:54,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:54,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:54,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:54,361 INFO L87 Difference]: Start difference. First operand 102077 states and 297102 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) [2022-11-22 02:40:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:56,440 INFO L93 Difference]: Finished difference Result 148780 states and 433309 transitions. [2022-11-22 02:40:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:56,441 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 [2022-11-22 02:40:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:57,143 INFO L225 Difference]: With dead ends: 148780 [2022-11-22 02:40:57,143 INFO L226 Difference]: Without dead ends: 148780 [2022-11-22 02:40:57,144 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 [2022-11-22 02:40:57,145 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 246 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:57,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 469 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:40:57,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148780 states. [2022-11-22 02:41:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148780 to 102085. [2022-11-22 02:41:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102085 states, 101471 states have (on average 2.934493599156409) internal successors, (297766), 102084 states have internal predecessors, (297766), 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) [2022-11-22 02:41:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102085 states to 102085 states and 297766 transitions. [2022-11-22 02:41:02,200 INFO L78 Accepts]: Start accepts. Automaton has 102085 states and 297766 transitions. Word has length 8 [2022-11-22 02:41:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:02,201 INFO L495 AbstractCegarLoop]: Abstraction has 102085 states and 297766 transitions. [2022-11-22 02:41:02,202 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) [2022-11-22 02:41:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 102085 states and 297766 transitions. [2022-11-22 02:41:02,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:41:02,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:02,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:02,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:41:02,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-22 02:41:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1381627931, now seen corresponding path program 1 times [2022-11-22 02:41:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:02,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207188562] [2022-11-22 02:41:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:02,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207188562] [2022-11-22 02:41:02,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207188562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:02,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:02,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:41:02,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296447118] [2022-11-22 02:41:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:41:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:41:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:41:02,882 INFO L87 Difference]: Start difference. First operand 102085 states and 297766 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-22 02:41:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:06,728 INFO L93 Difference]: Finished difference Result 130681 states and 381950 transitions. [2022-11-22 02:41:06,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:41:06,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2022-11-22 02:41:06,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:07,336 INFO L225 Difference]: With dead ends: 130681 [2022-11-22 02:41:07,336 INFO L226 Difference]: Without dead ends: 130681 [2022-11-22 02:41:07,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:41:07,339 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 220 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:07,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 287 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:41:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130681 states. [2022-11-22 02:41:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130681 to 116953. [2022-11-22 02:41:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116953 states, 116345 states have (on average 2.940650651080837) internal successors, (342130), 116952 states have internal predecessors, (342130), 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) [2022-11-22 02:41:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116953 states to 116953 states and 342130 transitions. [2022-11-22 02:41:11,505 INFO L78 Accepts]: Start accepts. Automaton has 116953 states and 342130 transitions. Word has length 9 [2022-11-22 02:41:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:11,506 INFO L495 AbstractCegarLoop]: Abstraction has 116953 states and 342130 transitions. [2022-11-22 02:41:11,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-11-22 02:41:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 116953 states and 342130 transitions. [2022-11-22 02:41:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:41:11,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:11,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:11,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:41:11,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-22 02:41:11,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -337604264, now seen corresponding path program 1 times [2022-11-22 02:41:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:11,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666904734] [2022-11-22 02:41:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:11,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:12,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:12,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666904734] [2022-11-22 02:41:12,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666904734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:12,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:12,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:41:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323824816] [2022-11-22 02:41:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:12,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:41:12,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:41:12,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:41:12,005 INFO L87 Difference]: Start difference. First operand 116953 states and 342130 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-22 02:41:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:17,007 INFO L93 Difference]: Finished difference Result 190046 states and 550480 transitions. [2022-11-22 02:41:17,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:41:17,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2022-11-22 02:41:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:17,669 INFO L225 Difference]: With dead ends: 190046 [2022-11-22 02:41:17,669 INFO L226 Difference]: Without dead ends: 190046 [2022-11-22 02:41:17,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:41:17,670 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 513 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2877 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:17,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 443 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2877 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-22 02:41:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190046 states. [2022-11-22 02:41:22,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190046 to 174908. [2022-11-22 02:41:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174908 states, 174300 states have (on average 2.979592656339644) internal successors, (519343), 174907 states have internal predecessors, (519343), 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) [2022-11-22 02:41:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174908 states to 174908 states and 519343 transitions. [2022-11-22 02:41:22,962 INFO L78 Accepts]: Start accepts. Automaton has 174908 states and 519343 transitions. Word has length 10 [2022-11-22 02:41:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:22,963 INFO L495 AbstractCegarLoop]: Abstraction has 174908 states and 519343 transitions. [2022-11-22 02:41:22,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-11-22 02:41:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 174908 states and 519343 transitions. [2022-11-22 02:41:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:41:22,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:22,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:41:22,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2022-11-22 02:41:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash -933221648, now seen corresponding path program 1 times [2022-11-22 02:41:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223634572] [2022-11-22 02:41:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:23,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:23,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223634572] [2022-11-22 02:41:23,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223634572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:23,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:23,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:41:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395801532] [2022-11-22 02:41:23,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:23,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:41:23,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:41:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:41:23,317 INFO L87 Difference]: Start difference. First operand 174908 states and 519343 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-22 02:41:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:29,018 INFO L93 Difference]: Finished difference Result 257532 states and 763569 transitions. [2022-11-22 02:41:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:41:29,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-11-22 02:41:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:29,837 INFO L225 Difference]: With dead ends: 257532 [2022-11-22 02:41:29,837 INFO L226 Difference]: Without dead ends: 257532 [2022-11-22 02:41:29,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:41:29,838 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 392 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:29,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 328 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 02:41:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257532 states. [2022-11-22 02:41:35,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257532 to 194192. [2022-11-22 02:41:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194192 states, 193620 states have (on average 2.9830802603036877) internal successors, (577584), 194191 states have internal predecessors, (577584), 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)