./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8393723b 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS --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 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb --- 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-8393723 [2022-11-19 08:00:20,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:00:20,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:00:20,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:00:20,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:00:20,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:00:20,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:00:20,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:00:20,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:00:20,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:00:20,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:00:20,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:00:20,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:00:20,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:00:20,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:00:20,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:00:20,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:00:20,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:00:20,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:00:20,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:00:20,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:00:20,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:00:20,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:00:20,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:00:20,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:00:20,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:00:20,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:00:20,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:00:20,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:00:20,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:00:20,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:00:20,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:00:20,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:00:20,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:00:20,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:00:20,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:00:20,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:00:20,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:00:20,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:00:20,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:00:20,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:00:20,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 08:00:20,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:00:20,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:00:20,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:00:20,862 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:00:20,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:00:20,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:00:20,864 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:00:20,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:00:20,864 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:00:20,864 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:00:20,866 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:00:20,866 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:00:20,866 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:00:20,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:00:20,867 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:00:20,867 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:00:20,867 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:00:20,868 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:00:20,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:00:20,869 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:00:20,869 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:00:20,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:00:20,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:00:20,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:00:20,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:00:20,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:00:20,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:00:20,873 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 08:00:20,873 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:00:20,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:00:20,873 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:00:20,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:00:20,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:00:20,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:00:20,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:20,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:00:20,875 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:00:20,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:00:20,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:00:20,876 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:00:20,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:00:20,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:00:20,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:00:20,877 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 654ba073723c5bebcf706552b3cd58bc95cc07bc71a7e60391f80a16de89dbcb [2022-11-19 08:00:21,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:00:21,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:00:21,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:00:21,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:00:21,251 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:00:21,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-11-19 08:00:21,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/data/e57fb0e73/26bb65c9c3d74ebc976e1b78a9037642/FLAG3a2aeabc8 [2022-11-19 08:00:21,940 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:00:21,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i [2022-11-19 08:00:21,971 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/data/e57fb0e73/26bb65c9c3d74ebc976e1b78a9037642/FLAG3a2aeabc8 [2022-11-19 08:00:22,211 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/data/e57fb0e73/26bb65c9c3d74ebc976e1b78a9037642 [2022-11-19 08:00:22,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:00:22,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:00:22,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:22,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:00:22,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:00:22,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:22" (1/1) ... [2022-11-19 08:00:22,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438a4235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:22, skipping insertion in model container [2022-11-19 08:00:22,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:22" (1/1) ... [2022-11-19 08:00:22,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:00:22,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:00:22,529 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 08:00:22,742 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-11-19 08:00:22,775 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-11-19 08:00:22,806 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-11-19 08:00:22,810 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-11-19 08:00:22,816 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-11-19 08:00:22,821 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-11-19 08:00:22,825 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-11-19 08:00:22,834 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-11-19 08:00:22,838 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-11-19 08:00:22,844 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-11-19 08:00:22,846 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-11-19 08:00:22,851 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-11-19 08:00:22,862 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-11-19 08:00:22,866 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-11-19 08:00:22,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:22,885 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:00:22,919 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-19 08:00:22,957 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30448,30461] [2022-11-19 08:00:22,972 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[30811,30824] [2022-11-19 08:00:22,980 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31483,31496] [2022-11-19 08:00:22,985 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31534,31547] [2022-11-19 08:00:22,989 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31683,31696] [2022-11-19 08:00:22,992 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31760,31773] [2022-11-19 08:00:22,994 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31807,31820] [2022-11-19 08:00:22,997 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[31916,31929] [2022-11-19 08:00:22,999 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32035,32048] [2022-11-19 08:00:23,000 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32083,32096] [2022-11-19 08:00:23,001 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32160,32173] [2022-11-19 08:00:23,003 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32286,32299] [2022-11-19 08:00:23,012 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32897,32910] [2022-11-19 08:00:23,013 WARN L234 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_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/sv-benchmarks/c/pthread-divine/one_time_barrier_twice_2t.i[32974,32987] [2022-11-19 08:00:23,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:23,056 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:00:23,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23 WrapperNode [2022-11-19 08:00:23,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:23,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:00:23,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:00:23,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:00:23,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,221 INFO L138 Inliner]: procedures = 174, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 805 [2022-11-19 08:00:23,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:00:23,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:00:23,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:00:23,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:00:23,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,393 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:00:23,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:00:23,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:00:23,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:00:23,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (1/1) ... [2022-11-19 08:00:23,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:23,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:23,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:00:23,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:00:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:00:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:00:23,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-19 08:00:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-11-19 08:00:23,561 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-11-19 08:00:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:00:23,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:00:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:00:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:00:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:00:23,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:00:23,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:00:23,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:00:23,567 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 08:00:23,826 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:00:23,828 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:00:25,572 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:00:25,599 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:00:25,601 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-19 08:00:25,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:25 BoogieIcfgContainer [2022-11-19 08:00:25,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:00:25,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:00:25,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:00:25,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:00:25,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:22" (1/3) ... [2022-11-19 08:00:25,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:25, skipping insertion in model container [2022-11-19 08:00:25,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:23" (2/3) ... [2022-11-19 08:00:25,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:25, skipping insertion in model container [2022-11-19 08:00:25,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:25" (3/3) ... [2022-11-19 08:00:25,620 INFO L112 eAbstractionObserver]: Analyzing ICFG one_time_barrier_twice_2t.i [2022-11-19 08:00:25,634 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 08:00:25,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:00:25,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2022-11-19 08:00:25,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 08:00:25,951 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-19 08:00:26,006 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 08:00:26,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 868 places, 928 transitions, 1864 flow [2022-11-19 08:00:26,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 868 places, 928 transitions, 1864 flow [2022-11-19 08:00:26,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 868 places, 928 transitions, 1864 flow [2022-11-19 08:00:26,998 INFO L130 PetriNetUnfolder]: 95/1352 cut-off events. [2022-11-19 08:00:26,998 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-19 08:00:27,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 1352 events. 95/1352 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4534 event pairs, 0 based on Foata normal form. 0/1139 useless extension candidates. Maximal degree in co-relation 794. Up to 4 conditions per place. [2022-11-19 08:00:27,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 313900 [2022-11-19 08:01:29,534 WARN L233 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 109 DAG size of output: 105 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:01:39,181 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 115 DAG size of output: 109 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:02:33,788 WARN L233 SmtUtils]: Spent 40.87s on a formula simplification. DAG size of input: 155 DAG size of output: 154 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:02:50,739 WARN L233 SmtUtils]: Spent 16.95s on a formula simplification that was a NOOP. DAG size: 148 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:03:33,157 WARN L233 SmtUtils]: Spent 42.42s on a formula simplification. DAG size of input: 158 DAG size of output: 157 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:03:50,857 WARN L233 SmtUtils]: Spent 17.70s on a formula simplification that was a NOOP. DAG size: 151 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:05:45,623 WARN L233 SmtUtils]: Spent 1.90m on a formula simplification. DAG size of input: 185 DAG size of output: 183 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:06:18,167 WARN L233 SmtUtils]: Spent 32.54s on a formula simplification that was a NOOP. DAG size: 163 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:08:43,065 WARN L233 SmtUtils]: Spent 2.41m on a formula simplification. DAG size of input: 197 DAG size of output: 193 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:09:23,782 WARN L233 SmtUtils]: Spent 40.71s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:09:56,282 WARN L233 SmtUtils]: Spent 32.06s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:10:27,832 WARN L233 SmtUtils]: Spent 31.55s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:11:06,736 WARN L233 SmtUtils]: Spent 38.90s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:11:49,610 WARN L233 SmtUtils]: Spent 42.87s on a formula simplification that was a NOOP. DAG size: 174 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-19 08:11:56,677 INFO L134 LiptonReduction]: Checked pairs total: 5629627 [2022-11-19 08:11:56,677 INFO L136 LiptonReduction]: Total number of compositions: 705 [2022-11-19 08:11:56,688 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 439 places, 475 transitions, 958 flow [2022-11-19 08:11:57,911 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 45722 states, 44278 states have (on average 2.229052802746285) internal successors, (98698), 45721 states have internal predecessors, (98698), 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) [2022-11-19 08:11:57,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:11:57,945 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;@3afda984, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:11:57,946 INFO L358 AbstractCegarLoop]: Starting to check reachability of 113 error locations. [2022-11-19 08:11:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 45722 states, 44278 states have (on average 2.229052802746285) internal successors, (98698), 45721 states have internal predecessors, (98698), 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) [2022-11-19 08:11:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-19 08:11:58,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:11:58,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-19 08:11:58,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:11:58,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:11:58,073 INFO L85 PathProgramCache]: Analyzing trace with hash 100943, now seen corresponding path program 1 times [2022-11-19 08:11:58,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:11:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223763393] [2022-11-19 08:11:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:11:58,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:11:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:11:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:11:58,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:11:58,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223763393] [2022-11-19 08:11:58,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223763393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:11:58,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:11:58,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 08:11:58,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910140972] [2022-11-19 08:11:58,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:11:58,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:11:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:11:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:11:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:11:58,639 INFO L87 Difference]: Start difference. First operand has 45722 states, 44278 states have (on average 2.229052802746285) internal successors, (98698), 45721 states have internal predecessors, (98698), 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 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 08:12:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:00,709 INFO L93 Difference]: Finished difference Result 45715 states and 94411 transitions. [2022-11-19 08:12:00,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:12:00,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-19 08:12:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:00,994 INFO L225 Difference]: With dead ends: 45715 [2022-11-19 08:12:00,994 INFO L226 Difference]: Without dead ends: 45713 [2022-11-19 08:12:00,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:12:00,999 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:01,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 293 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-19 08:12:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45713 states. [2022-11-19 08:12:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45713 to 45713. [2022-11-19 08:12:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45713 states, 44278 states have (on average 2.132164957766837) internal successors, (94408), 45712 states have internal predecessors, (94408), 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) [2022-11-19 08:12:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45713 states to 45713 states and 94408 transitions. [2022-11-19 08:12:04,147 INFO L78 Accepts]: Start accepts. Automaton has 45713 states and 94408 transitions. Word has length 2 [2022-11-19 08:12:04,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:04,148 INFO L495 AbstractCegarLoop]: Abstraction has 45713 states and 94408 transitions. [2022-11-19 08:12:04,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-19 08:12:04,149 INFO L276 IsEmpty]: Start isEmpty. Operand 45713 states and 94408 transitions. [2022-11-19 08:12:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:12:04,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:04,150 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-19 08:12:04,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:12:04,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1856443043, now seen corresponding path program 1 times [2022-11-19 08:12:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:04,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139654866] [2022-11-19 08:12:04,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:04,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:12:04,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:04,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139654866] [2022-11-19 08:12:04,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139654866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:04,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:04,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:12:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062581397] [2022-11-19 08:12:04,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:04,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:04,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:04,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:04,410 INFO L87 Difference]: Start difference. First operand 45713 states and 94408 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:06,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:06,928 INFO L93 Difference]: Finished difference Result 45714 states and 94409 transitions. [2022-11-19 08:12:06,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:06,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:12:06,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:07,111 INFO L225 Difference]: With dead ends: 45714 [2022-11-19 08:12:07,112 INFO L226 Difference]: Without dead ends: 45714 [2022-11-19 08:12:07,112 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 [2022-11-19 08:12:07,114 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:07,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 586 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 08:12:07,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45714 states. [2022-11-19 08:12:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45714 to 45714. [2022-11-19 08:12:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45714 states, 44279 states have (on average 2.1321393888750877) internal successors, (94409), 45713 states have internal predecessors, (94409), 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) [2022-11-19 08:12:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45714 states to 45714 states and 94409 transitions. [2022-11-19 08:12:09,739 INFO L78 Accepts]: Start accepts. Automaton has 45714 states and 94409 transitions. Word has length 7 [2022-11-19 08:12:09,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:09,739 INFO L495 AbstractCegarLoop]: Abstraction has 45714 states and 94409 transitions. [2022-11-19 08:12:09,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:09,744 INFO L276 IsEmpty]: Start isEmpty. Operand 45714 states and 94409 transitions. [2022-11-19 08:12:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:12:09,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:09,746 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:12:09,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:09,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1846733072, now seen corresponding path program 1 times [2022-11-19 08:12:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:09,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864682206] [2022-11-19 08:12:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:12:10,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:10,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864682206] [2022-11-19 08:12:10,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864682206] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:12:10,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508936646] [2022-11-19 08:12:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:10,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:10,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:10,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:10,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:12:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:10,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:10,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:12:10,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:12:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:12:10,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508936646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:12:10,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [278926240] [2022-11-19 08:12:10,724 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:12:10,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:12:10,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-11-19 08:12:10,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548122805] [2022-11-19 08:12:10,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:12:10,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:12:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:10,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:12:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:10,731 INFO L87 Difference]: Start difference. First operand 45714 states and 94409 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-19 08:12:13,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:13,146 INFO L93 Difference]: Finished difference Result 45715 states and 94410 transitions. [2022-11-19 08:12:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:12:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 8 [2022-11-19 08:12:13,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:13,477 INFO L225 Difference]: With dead ends: 45715 [2022-11-19 08:12:13,477 INFO L226 Difference]: Without dead ends: 45715 [2022-11-19 08:12:13,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:13,479 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 0 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:13,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 586 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 08:12:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45715 states. [2022-11-19 08:12:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45715 to 45715. [2022-11-19 08:12:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45715 states, 44280 states have (on average 2.1321138211382116) internal successors, (94410), 45714 states have internal predecessors, (94410), 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) [2022-11-19 08:12:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45715 states to 45715 states and 94410 transitions. [2022-11-19 08:12:15,106 INFO L78 Accepts]: Start accepts. Automaton has 45715 states and 94410 transitions. Word has length 8 [2022-11-19 08:12:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:15,106 INFO L495 AbstractCegarLoop]: Abstraction has 45715 states and 94410 transitions. [2022-11-19 08:12:15,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-19 08:12:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 45715 states and 94410 transitions. [2022-11-19 08:12:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:12:15,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:15,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 08:12:15,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 08:12:15,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:15,318 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash 681075645, now seen corresponding path program 2 times [2022-11-19 08:12:15,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:15,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377745718] [2022-11-19 08:12:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:15,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:12:15,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:15,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377745718] [2022-11-19 08:12:15,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377745718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:12:15,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753521720] [2022-11-19 08:12:15,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:12:15,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:15,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:12:15,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:12:16,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-19 08:12:16,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:12:16,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:12:16,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:12:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:12:16,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:12:16,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753521720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:16,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:12:16,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-19 08:12:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358488619] [2022-11-19 08:12:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:12:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:12:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:16,772 INFO L87 Difference]: Start difference. First operand 45715 states and 94410 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-19 08:12:18,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:18,808 INFO L93 Difference]: Finished difference Result 45307 states and 93580 transitions. [2022-11-19 08:12:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:12:18,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 9 [2022-11-19 08:12:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:19,008 INFO L225 Difference]: With dead ends: 45307 [2022-11-19 08:12:19,009 INFO L226 Difference]: Without dead ends: 45307 [2022-11-19 08:12:19,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:12:19,010 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 651 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:19,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 572 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 08:12:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45307 states. [2022-11-19 08:12:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45307 to 45307. [2022-11-19 08:12:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45307 states, 43907 states have (on average 2.131323023663653) internal successors, (93580), 45306 states have internal predecessors, (93580), 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) [2022-11-19 08:12:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45307 states to 45307 states and 93580 transitions. [2022-11-19 08:12:20,728 INFO L78 Accepts]: Start accepts. Automaton has 45307 states and 93580 transitions. Word has length 9 [2022-11-19 08:12:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:20,728 INFO L495 AbstractCegarLoop]: Abstraction has 45307 states and 93580 transitions. [2022-11-19 08:12:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-11-19 08:12:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 45307 states and 93580 transitions. [2022-11-19 08:12:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:12:20,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:20,729 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:20,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:12:20,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:12:20,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:20,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1513537412, now seen corresponding path program 1 times [2022-11-19 08:12:20,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:20,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769973137] [2022-11-19 08:12:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:20,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:12:21,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:21,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769973137] [2022-11-19 08:12:21,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769973137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:21,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:21,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:12:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460991133] [2022-11-19 08:12:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:21,136 INFO L87 Difference]: Start difference. First operand 45307 states and 93580 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-19 08:12:22,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:22,966 INFO L93 Difference]: Finished difference Result 45105 states and 93369 transitions. [2022-11-19 08:12:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 10 [2022-11-19 08:12:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:23,097 INFO L225 Difference]: With dead ends: 45105 [2022-11-19 08:12:23,098 INFO L226 Difference]: Without dead ends: 45105 [2022-11-19 08:12:23,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:23,099 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 213 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:23,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 584 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 08:12:23,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45105 states. [2022-11-19 08:12:24,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45105 to 45105. [2022-11-19 08:12:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45105 states, 43739 states have (on average 2.1346852923020645) internal successors, (93369), 45104 states have internal predecessors, (93369), 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) [2022-11-19 08:12:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45105 states to 45105 states and 93369 transitions. [2022-11-19 08:12:24,273 INFO L78 Accepts]: Start accepts. Automaton has 45105 states and 93369 transitions. Word has length 10 [2022-11-19 08:12:24,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:24,274 INFO L495 AbstractCegarLoop]: Abstraction has 45105 states and 93369 transitions. [2022-11-19 08:12:24,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-19 08:12:24,274 INFO L276 IsEmpty]: Start isEmpty. Operand 45105 states and 93369 transitions. [2022-11-19 08:12:24,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:12:24,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:24,275 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:24,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:12:24,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting worker_fnErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash 702481376, now seen corresponding path program 1 times [2022-11-19 08:12:24,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:24,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911668603] [2022-11-19 08:12:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:12:25,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:25,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911668603] [2022-11-19 08:12:25,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911668603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:25,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:25,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:12:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607073614] [2022-11-19 08:12:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:25,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:12:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:12:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:12:25,068 INFO L87 Difference]: Start difference. First operand 45105 states and 93369 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-19 08:12:31,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:31,829 INFO L93 Difference]: Finished difference Result 46361 states and 95929 transitions. [2022-11-19 08:12:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:12:31,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 08:12:31,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:31,927 INFO L225 Difference]: With dead ends: 46361 [2022-11-19 08:12:31,927 INFO L226 Difference]: Without dead ends: 46361 [2022-11-19 08:12:31,927 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 [2022-11-19 08:12:31,928 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 532 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:31,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 438 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 08:12:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46361 states. [2022-11-19 08:12:32,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46361 to 45939. [2022-11-19 08:12:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45939 states, 44574 states have (on average 2.132835285143806) internal successors, (95069), 45938 states have internal predecessors, (95069), 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) [2022-11-19 08:12:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45939 states to 45939 states and 95069 transitions. [2022-11-19 08:12:33,113 INFO L78 Accepts]: Start accepts. Automaton has 45939 states and 95069 transitions. Word has length 12 [2022-11-19 08:12:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:33,114 INFO L495 AbstractCegarLoop]: Abstraction has 45939 states and 95069 transitions. [2022-11-19 08:12:33,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-19 08:12:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 45939 states and 95069 transitions. [2022-11-19 08:12:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 08:12:33,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:33,115 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:12:33,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash 259291769, now seen corresponding path program 1 times [2022-11-19 08:12:33,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:33,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490450350] [2022-11-19 08:12:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:12:34,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:34,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490450350] [2022-11-19 08:12:34,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490450350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:34,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:34,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:12:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076913396] [2022-11-19 08:12:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:34,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:12:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:12:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:12:34,030 INFO L87 Difference]: Start difference. First operand 45939 states and 95069 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:39,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:39,954 INFO L93 Difference]: Finished difference Result 47101 states and 97435 transitions. [2022-11-19 08:12:39,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:12:39,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 08:12:39,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:40,311 INFO L225 Difference]: With dead ends: 47101 [2022-11-19 08:12:40,311 INFO L226 Difference]: Without dead ends: 47101 [2022-11-19 08:12:40,312 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 [2022-11-19 08:12:40,312 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 480 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:40,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 413 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-19 08:12:40,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47101 states. [2022-11-19 08:12:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47101 to 46711. [2022-11-19 08:12:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46711 states, 45346 states have (on average 2.131191284788074) internal successors, (96641), 46710 states have internal predecessors, (96641), 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) [2022-11-19 08:12:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46711 states to 46711 states and 96641 transitions. [2022-11-19 08:12:41,746 INFO L78 Accepts]: Start accepts. Automaton has 46711 states and 96641 transitions. Word has length 13 [2022-11-19 08:12:41,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:41,746 INFO L495 AbstractCegarLoop]: Abstraction has 46711 states and 96641 transitions. [2022-11-19 08:12:41,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:12:41,747 INFO L276 IsEmpty]: Start isEmpty. Operand 46711 states and 96641 transitions. [2022-11-19 08:12:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 08:12:41,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:41,750 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:41,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:12:41,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting worker_fnErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:41,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1730349245, now seen corresponding path program 1 times [2022-11-19 08:12:41,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:41,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547016560] [2022-11-19 08:12:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:12:41,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:41,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547016560] [2022-11-19 08:12:41,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547016560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:41,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:41,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:12:41,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883706165] [2022-11-19 08:12:41,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:41,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:41,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:41,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:41,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:41,990 INFO L87 Difference]: Start difference. First operand 46711 states and 96641 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) [2022-11-19 08:12:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:44,618 INFO L93 Difference]: Finished difference Result 46924 states and 97075 transitions. [2022-11-19 08:12:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:44,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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 15 [2022-11-19 08:12:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:44,725 INFO L225 Difference]: With dead ends: 46924 [2022-11-19 08:12:44,725 INFO L226 Difference]: Without dead ends: 46924 [2022-11-19 08:12:44,725 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 [2022-11-19 08:12:44,726 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 132 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:44,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 327 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 08:12:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46924 states. [2022-11-19 08:12:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46924 to 46924. [2022-11-19 08:12:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46924 states, 45559 states have (on average 2.1307535283917556) internal successors, (97075), 46923 states have internal predecessors, (97075), 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) [2022-11-19 08:12:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 97075 transitions. [2022-11-19 08:12:45,700 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 97075 transitions. Word has length 15 [2022-11-19 08:12:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:45,701 INFO L495 AbstractCegarLoop]: Abstraction has 46924 states and 97075 transitions. [2022-11-19 08:12:45,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 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) [2022-11-19 08:12:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 97075 transitions. [2022-11-19 08:12:45,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:12:45,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:45,702 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:12:45,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2052168617, now seen corresponding path program 1 times [2022-11-19 08:12:45,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:45,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775724029] [2022-11-19 08:12:45,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:45,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:12:45,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:45,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775724029] [2022-11-19 08:12:45,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775724029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:45,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:45,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:12:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997095771] [2022-11-19 08:12:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:45,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:45,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:45,907 INFO L87 Difference]: Start difference. First operand 46924 states and 97075 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-19 08:12:48,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:48,780 INFO L93 Difference]: Finished difference Result 47118 states and 97470 transitions. [2022-11-19 08:12:48,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:48,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 16 [2022-11-19 08:12:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:48,934 INFO L225 Difference]: With dead ends: 47118 [2022-11-19 08:12:48,934 INFO L226 Difference]: Without dead ends: 47118 [2022-11-19 08:12:48,935 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 [2022-11-19 08:12:48,935 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:48,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 323 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 08:12:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47118 states. [2022-11-19 08:12:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47118 to 47118. [2022-11-19 08:12:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47118 states, 45754 states have (on average 2.130305547055995) internal successors, (97470), 47117 states have internal predecessors, (97470), 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) [2022-11-19 08:12:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47118 states to 47118 states and 97470 transitions. [2022-11-19 08:12:50,011 INFO L78 Accepts]: Start accepts. Automaton has 47118 states and 97470 transitions. Word has length 16 [2022-11-19 08:12:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:50,012 INFO L495 AbstractCegarLoop]: Abstraction has 47118 states and 97470 transitions. [2022-11-19 08:12:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-11-19 08:12:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 47118 states and 97470 transitions. [2022-11-19 08:12:50,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:12:50,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:50,015 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:12:50,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting worker_fnErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:50,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -422862537, now seen corresponding path program 1 times [2022-11-19 08:12:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379504463] [2022-11-19 08:12:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:12:50,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:50,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379504463] [2022-11-19 08:12:50,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379504463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:50,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:50,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:12:50,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830709244] [2022-11-19 08:12:50,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:50,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:12:50,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:12:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:12:50,592 INFO L87 Difference]: Start difference. First operand 47118 states and 97470 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-19 08:12:54,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:54,642 INFO L93 Difference]: Finished difference Result 47122 states and 97478 transitions. [2022-11-19 08:12:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 08:12:54,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 18 [2022-11-19 08:12:54,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:54,981 INFO L225 Difference]: With dead ends: 47122 [2022-11-19 08:12:54,981 INFO L226 Difference]: Without dead ends: 47122 [2022-11-19 08:12:54,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:12:54,982 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1350 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1426 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:54,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 841 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1426 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 08:12:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47122 states. [2022-11-19 08:12:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47122 to 47102. [2022-11-19 08:12:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47102 states, 45739 states have (on average 2.1303045541004395) internal successors, (97438), 47101 states have internal predecessors, (97438), 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) [2022-11-19 08:12:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47102 states to 47102 states and 97438 transitions. [2022-11-19 08:12:55,998 INFO L78 Accepts]: Start accepts. Automaton has 47102 states and 97438 transitions. Word has length 18 [2022-11-19 08:12:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:55,998 INFO L495 AbstractCegarLoop]: Abstraction has 47102 states and 97438 transitions. [2022-11-19 08:12:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-11-19 08:12:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 47102 states and 97438 transitions. [2022-11-19 08:12:55,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:12:55,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:55,999 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:56,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:12:56,000 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting worker_fnErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:56,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash -612514888, now seen corresponding path program 1 times [2022-11-19 08:12:56,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:56,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129961239] [2022-11-19 08:12:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:56,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:12:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:12:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:12:56,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:12:56,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129961239] [2022-11-19 08:12:56,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129961239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:12:56,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:12:56,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:12:56,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038916016] [2022-11-19 08:12:56,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:12:56,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:12:56,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:12:56,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:12:56,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:12:56,356 INFO L87 Difference]: Start difference. First operand 47102 states and 97438 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-19 08:12:58,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:12:58,844 INFO L93 Difference]: Finished difference Result 48137 states and 99548 transitions. [2022-11-19 08:12:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:12:58,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2022-11-19 08:12:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:12:58,946 INFO L225 Difference]: With dead ends: 48137 [2022-11-19 08:12:58,946 INFO L226 Difference]: Without dead ends: 48137 [2022-11-19 08:12:58,947 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 [2022-11-19 08:12:58,947 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 135 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:12:58,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 323 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 08:12:59,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48137 states. [2022-11-19 08:12:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48137 to 47295. [2022-11-19 08:12:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47295 states, 45934 states have (on average 2.1298384638829626) internal successors, (97832), 47294 states have internal predecessors, (97832), 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) [2022-11-19 08:12:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47295 states to 47295 states and 97832 transitions. [2022-11-19 08:12:59,985 INFO L78 Accepts]: Start accepts. Automaton has 47295 states and 97832 transitions. Word has length 18 [2022-11-19 08:12:59,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:12:59,985 INFO L495 AbstractCegarLoop]: Abstraction has 47295 states and 97832 transitions. [2022-11-19 08:12:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-19 08:12:59,985 INFO L276 IsEmpty]: Start isEmpty. Operand 47295 states and 97832 transitions. [2022-11-19 08:12:59,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:12:59,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:12:59,986 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:12:59,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:12:59,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:12:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:12:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1685438716, now seen corresponding path program 1 times [2022-11-19 08:12:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:12:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866943488] [2022-11-19 08:12:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:12:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:13:00,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:00,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866943488] [2022-11-19 08:13:00,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866943488] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:13:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731386962] [2022-11-19 08:13:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:00,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:00,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:00,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:13:00,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:13:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:00,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-19 08:13:00,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:01,064 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-19 08:13:01,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2022-11-19 08:13:01,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:13:01,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-19 08:13:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:13:01,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:01,320 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1867 (Array Int Int))) (= (select (select (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| v_ArrVal_1867) |c_~#pre~0.base|) (+ |c_~#pre~0.offset| |c_ULTIMATE.start_worker_fn_~tid~0#1|)) |c_ULTIMATE.start_worker_fn_#t~nondet18#1|)) is different from false [2022-11-19 08:13:01,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:13:01,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-19 08:13:01,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-19 08:13:01,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:13:01,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731386962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:01,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [646318037] [2022-11-19 08:13:01,379 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:13:01,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:13:01,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-11-19 08:13:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98797476] [2022-11-19 08:13:01,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:13:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 08:13:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 08:13:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=121, Unknown=1, NotChecked=22, Total=182 [2022-11-19 08:13:01,382 INFO L87 Difference]: Start difference. First operand 47295 states and 97832 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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) [2022-11-19 08:13:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:07,353 INFO L93 Difference]: Finished difference Result 47299 states and 97840 transitions. [2022-11-19 08:13:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 08:13:07,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 18 [2022-11-19 08:13:07,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:07,485 INFO L225 Difference]: With dead ends: 47299 [2022-11-19 08:13:07,485 INFO L226 Difference]: Without dead ends: 47299 [2022-11-19 08:13:07,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=220, Unknown=1, NotChecked=32, Total=342 [2022-11-19 08:13:07,486 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 3407 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3407 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1091 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:07,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3407 Valid, 974 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2051 Invalid, 0 Unknown, 1091 Unchecked, 5.2s Time] [2022-11-19 08:13:07,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47299 states. [2022-11-19 08:13:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47299 to 47279. [2022-11-19 08:13:08,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47279 states, 45919 states have (on average 2.129837322241338) internal successors, (97800), 47278 states have internal predecessors, (97800), 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) [2022-11-19 08:13:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47279 states to 47279 states and 97800 transitions. [2022-11-19 08:13:08,473 INFO L78 Accepts]: Start accepts. Automaton has 47279 states and 97800 transitions. Word has length 18 [2022-11-19 08:13:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:08,473 INFO L495 AbstractCegarLoop]: Abstraction has 47279 states and 97800 transitions. [2022-11-19 08:13:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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) [2022-11-19 08:13:08,474 INFO L276 IsEmpty]: Start isEmpty. Operand 47279 states and 97800 transitions. [2022-11-19 08:13:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 08:13:08,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:08,474 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:08,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:13:08,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:08,675 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:13:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1560978779, now seen corresponding path program 1 times [2022-11-19 08:13:08,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242189620] [2022-11-19 08:13:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:08,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:13:08,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:08,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242189620] [2022-11-19 08:13:08,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242189620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:08,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:08,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:13:08,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477047047] [2022-11-19 08:13:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:08,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:08,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:08,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:08,865 INFO L87 Difference]: Start difference. First operand 47279 states and 97800 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-19 08:13:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:12,010 INFO L93 Difference]: Finished difference Result 48228 states and 99733 transitions. [2022-11-19 08:13:12,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:12,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2022-11-19 08:13:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:12,101 INFO L225 Difference]: With dead ends: 48228 [2022-11-19 08:13:12,101 INFO L226 Difference]: Without dead ends: 48228 [2022-11-19 08:13:12,102 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 [2022-11-19 08:13:12,102 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 123 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:12,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 320 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 08:13:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48228 states. [2022-11-19 08:13:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48228 to 47454. [2022-11-19 08:13:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47454 states, 46097 states have (on average 2.1293576588498166) internal successors, (98157), 47453 states have internal predecessors, (98157), 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) [2022-11-19 08:13:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47454 states to 47454 states and 98157 transitions. [2022-11-19 08:13:13,250 INFO L78 Accepts]: Start accepts. Automaton has 47454 states and 98157 transitions. Word has length 19 [2022-11-19 08:13:13,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:13,250 INFO L495 AbstractCegarLoop]: Abstraction has 47454 states and 98157 transitions. [2022-11-19 08:13:13,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-19 08:13:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 47454 states and 98157 transitions. [2022-11-19 08:13:13,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 08:13:13,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:13,252 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:13:13,252 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:13:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1158500770, now seen corresponding path program 1 times [2022-11-19 08:13:13,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:13,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155834179] [2022-11-19 08:13:13,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:13:15,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155834179] [2022-11-19 08:13:15,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155834179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:13:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428203345] [2022-11-19 08:13:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:15,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:15,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:15,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:13:15,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:13:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:15,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 08:13:15,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:15,803 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-19 08:13:15,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 47 [2022-11-19 08:13:16,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:13:16,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:13:16,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:16,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:16,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:13:16,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:13:16,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:13:16,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:16,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:16,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:16,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:16,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2022-11-19 08:13:22,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-11-19 08:13:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:13:28,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:28,927 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2335 (Array Int Int))) (= 0 (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2335) |c_ULTIMATE.start_worker_fn_~a~0#1.base|) (+ |c_ULTIMATE.start_worker_fn_~a~0#1.offset| 10)))) (forall ((v_ArrVal_2335 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2335) |c_ULTIMATE.start_worker_fn_~a~0#1.base|) (+ |c_ULTIMATE.start_worker_fn_~a~0#1.offset| 9)) 0)) (forall ((v_ArrVal_2335 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2335) |c_ULTIMATE.start_worker_fn_~a~0#1.base|) (+ |c_ULTIMATE.start_worker_fn_~a~0#1.offset| 8)) 0)) (forall ((v_ArrVal_2335 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2335) |c_ULTIMATE.start_worker_fn_~a~0#1.base|) (+ |c_ULTIMATE.start_worker_fn_~a~0#1.offset| 11)) 0))) is different from false [2022-11-19 08:13:32,796 INFO L321 Elim1Store]: treesize reduction 249, result has 24.8 percent of original size [2022-11-19 08:13:32,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 138 [2022-11-19 08:13:32,854 INFO L321 Elim1Store]: treesize reduction 97, result has 4.0 percent of original size [2022-11-19 08:13:32,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 107 treesize of output 69 [2022-11-19 08:13:32,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 08:13:32,923 INFO L321 Elim1Store]: treesize reduction 330, result has 0.3 percent of original size [2022-11-19 08:13:32,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 1 [2022-11-19 08:13:32,993 INFO L321 Elim1Store]: treesize reduction 330, result has 0.3 percent of original size [2022-11-19 08:13:32,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 1 [2022-11-19 08:13:33,042 INFO L321 Elim1Store]: treesize reduction 330, result has 0.3 percent of original size [2022-11-19 08:13:33,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 257 treesize of output 1 [2022-11-19 08:13:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:13:33,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428203345] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 08:13:33,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:13:33,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12, 12] total 33 [2022-11-19 08:13:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732661596] [2022-11-19 08:13:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:33,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:13:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:13:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=897, Unknown=29, NotChecked=64, Total=1190 [2022-11-19 08:13:33,347 INFO L87 Difference]: Start difference. First operand 47454 states and 98157 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-11-19 08:13:38,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:38,738 INFO L93 Difference]: Finished difference Result 48608 states and 100484 transitions. [2022-11-19 08:13:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:13:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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 21 [2022-11-19 08:13:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:38,835 INFO L225 Difference]: With dead ends: 48608 [2022-11-19 08:13:38,836 INFO L226 Difference]: Without dead ends: 48608 [2022-11-19 08:13:38,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=210, Invalid=1022, Unknown=32, NotChecked=68, Total=1332 [2022-11-19 08:13:38,837 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 788 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 7521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6123 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:38,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1532 Invalid, 7521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1380 Invalid, 0 Unknown, 6123 Unchecked, 3.9s Time] [2022-11-19 08:13:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48608 states. [2022-11-19 08:13:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48608 to 47463. [2022-11-19 08:13:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47463 states, 46106 states have (on average 2.1293324079295535) internal successors, (98175), 47462 states have internal predecessors, (98175), 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) [2022-11-19 08:13:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47463 states to 47463 states and 98175 transitions. [2022-11-19 08:13:39,921 INFO L78 Accepts]: Start accepts. Automaton has 47463 states and 98175 transitions. Word has length 21 [2022-11-19 08:13:39,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:39,922 INFO L495 AbstractCegarLoop]: Abstraction has 47463 states and 98175 transitions. [2022-11-19 08:13:39,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-11-19 08:13:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 47463 states and 98175 transitions. [2022-11-19 08:13:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 08:13:39,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:39,923 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:39,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:13:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 08:13:40,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting worker_fnErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:13:40,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1161909132, now seen corresponding path program 1 times [2022-11-19 08:13:40,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:40,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371172692] [2022-11-19 08:13:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:40,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:13:42,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:42,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371172692] [2022-11-19 08:13:42,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371172692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:13:42,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524178234] [2022-11-19 08:13:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:42,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:42,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:13:42,370 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:13:42,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:13:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:42,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-19 08:13:42,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:13:42,796 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-19 08:13:42,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 59 [2022-11-19 08:13:43,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:13:43,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:13:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:13:43,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:13:43,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-19 08:13:43,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:13:43,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:43,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:13:43,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:13:43,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 49 [2022-11-19 08:13:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 08:13:43,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:13:43,985 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2660 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2660) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_2660 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2660) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_2660 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2660) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0)) (forall ((v_ArrVal_2660 (Array Int Int))) (= (select (select (store |c_#race| |c_~#pre~0.base| v_ArrVal_2660) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 11 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) 0))) is different from false [2022-11-19 08:13:56,373 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse15 (+ 9 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|))) (let ((.cse10 (store |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select |c_#race| |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse15 0)))) (let ((.cse5 (+ 11 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) (.cse1 (+ 22 |c_ULTIMATE.start_main_~#a~1#1.offset|)) (.cse7 (+ 23 |c_ULTIMATE.start_main_~#a~1#1.offset|)) (.cse9 (+ 10 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)) (.cse11 (select .cse10 |c_ULTIMATE.start_main_~#a~1#1.base|)) (.cse2 (+ 20 |c_ULTIMATE.start_main_~#a~1#1.offset|)) (.cse12 (+ 21 |c_ULTIMATE.start_main_~#a~1#1.offset|))) (and (forall ((v_ArrVal_2651 Int) (v_ArrVal_2654 Int) (v_ArrVal_2656 Int) (v_ArrVal_2649 Int)) (let ((.cse3 (let ((.cse4 (let ((.cse6 (let ((.cse8 (store .cse10 |c_ULTIMATE.start_main_~#a~1#1.base| (store (store .cse11 .cse2 v_ArrVal_2649) .cse12 v_ArrVal_2651)))) (store .cse8 |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select .cse8 |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse9 0))))) (store .cse6 |c_ULTIMATE.start_main_~#a~1#1.base| (store (store (select .cse6 |c_ULTIMATE.start_main_~#a~1#1.base|) .cse1 v_ArrVal_2654) .cse7 v_ArrVal_2656))))) (store .cse4 |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select .cse4 |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse5 0))))) (let ((.cse0 (select .cse3 |c_ULTIMATE.start_main_~#a~1#1.base|))) (or (not (= (select .cse0 .cse1) 0)) (not (= (select .cse0 .cse2) 0)) (forall ((v_ArrVal_2660 (Array Int Int))) (= 0 (select (select (store .cse3 |c_~#pre~0.base| v_ArrVal_2660) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) (+ 8 |c_worker_fnThread1of1ForFork0_~a~0#1.offset|)))))))) (forall ((v_ArrVal_2651 Int) (v_ArrVal_2654 Int) (v_ArrVal_2656 Int) (v_ArrVal_2649 Int)) (let ((.cse14 (let ((.cse16 (let ((.cse17 (let ((.cse18 (store .cse10 |c_ULTIMATE.start_main_~#a~1#1.base| (store (store .cse11 .cse2 v_ArrVal_2649) .cse12 v_ArrVal_2651)))) (store .cse18 |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select .cse18 |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse9 0))))) (store .cse17 |c_ULTIMATE.start_main_~#a~1#1.base| (store (store (select .cse17 |c_ULTIMATE.start_main_~#a~1#1.base|) .cse1 v_ArrVal_2654) .cse7 v_ArrVal_2656))))) (store .cse16 |c_worker_fnThread1of1ForFork0_~a~0#1.base| (store (select .cse16 |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse5 0))))) (let ((.cse13 (select .cse14 |c_ULTIMATE.start_main_~#a~1#1.base|))) (or (not (= (select .cse13 .cse1) 0)) (forall ((v_ArrVal_2660 (Array Int Int))) (= (select (select (store .cse14 |c_~#pre~0.base| v_ArrVal_2660) |c_worker_fnThread1of1ForFork0_~a~0#1.base|) .cse15) 0)) (not (= (select .cse13 .cse2) 0)))))))))) is different from false [2022-11-19 08:13:56,823 INFO L321 Elim1Store]: treesize reduction 524, result has 28.5 percent of original size [2022-11-19 08:13:56,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 527 treesize of output 295 [2022-11-19 08:13:57,105 INFO L321 Elim1Store]: treesize reduction 96, result has 54.1 percent of original size [2022-11-19 08:13:57,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 12 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 234 treesize of output 292 [2022-11-19 08:13:57,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-19 08:13:57,492 INFO L321 Elim1Store]: treesize reduction 627, result has 14.5 percent of original size [2022-11-19 08:13:57,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 527 treesize of output 192 [2022-11-19 08:13:57,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:13:57,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,510 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:13:57,519 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-19 08:13:57,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 138 treesize of output 102 [2022-11-19 08:13:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-19 08:13:57,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524178234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:13:57,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1036620801] [2022-11-19 08:13:57,991 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:13:57,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:13:57,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 15] total 38 [2022-11-19 08:13:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091682167] [2022-11-19 08:13:57,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:13:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-19 08:13:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-19 08:13:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1214, Unknown=29, NotChecked=146, Total=1560 [2022-11-19 08:13:57,994 INFO L87 Difference]: Start difference. First operand 47463 states and 98175 transitions. Second operand has 40 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 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) [2022-11-19 08:14:27,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:27,600 INFO L93 Difference]: Finished difference Result 59019 states and 121939 transitions. [2022-11-19 08:14:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 08:14:27,601 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 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 21 [2022-11-19 08:14:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:27,730 INFO L225 Difference]: With dead ends: 59019 [2022-11-19 08:14:27,730 INFO L226 Difference]: Without dead ends: 59019 [2022-11-19 08:14:27,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=521, Invalid=2427, Unknown=30, NotChecked=214, Total=3192 [2022-11-19 08:14:27,732 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 4947 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 13504 mSolverCounterSat, 814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 25332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 814 IncrementalHoareTripleChecker+Valid, 13504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11014 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:27,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4947 Valid, 3639 Invalid, 25332 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [814 Valid, 13504 Invalid, 0 Unknown, 11014 Unchecked, 26.3s Time] [2022-11-19 08:14:27,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59019 states. [2022-11-19 08:14:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59019 to 47498. [2022-11-19 08:14:28,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47498 states, 46141 states have (on average 2.129234303547821) internal successors, (98245), 47497 states have internal predecessors, (98245), 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) [2022-11-19 08:14:28,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47498 states to 47498 states and 98245 transitions. [2022-11-19 08:14:28,810 INFO L78 Accepts]: Start accepts. Automaton has 47498 states and 98245 transitions. Word has length 21 [2022-11-19 08:14:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:28,810 INFO L495 AbstractCegarLoop]: Abstraction has 47498 states and 98245 transitions. [2022-11-19 08:14:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 39 states have internal predecessors, (60), 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) [2022-11-19 08:14:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 47498 states and 98245 transitions. [2022-11-19 08:14:28,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 08:14:28,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:28,812 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:14:28,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:14:29,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 08:14:29,013 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 110 more)] === [2022-11-19 08:14:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash -603490918, now seen corresponding path program 2 times [2022-11-19 08:14:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:14:29,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364575539] [2022-11-19 08:14:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:14:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:14:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:14:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 08:14:30,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:14:30,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364575539] [2022-11-19 08:14:30,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364575539] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:14:30,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818069015] [2022-11-19 08:14:30,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:14:30,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:14:30,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:14:30,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:14:30,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_125c07e4-ddc1-4a6b-89c4-dbe9ebd583f7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:14:31,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-19 08:14:31,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:14:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 08:14:31,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:14:31,429 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-19 08:14:31,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2022-11-19 08:14:31,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-19 08:14:31,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-19 08:14:31,716 INFO L321 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-11-19 08:14:31,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 54 [2022-11-19 08:14:31,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:14:31,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2022-11-19 08:14:31,978 INFO L321 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2022-11-19 08:14:31,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 66 [2022-11-19 08:14:32,193 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:14:32,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2022-11-19 08:14:32,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-11-19 08:14:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:14:32,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:14:32,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818069015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:14:32,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 08:14:32,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 22 [2022-11-19 08:14:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239979488] [2022-11-19 08:14:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:14:32,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 08:14:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:14:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 08:14:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:14:32,370 INFO L87 Difference]: Start difference. First operand 47498 states and 98245 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-11-19 08:14:34,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:14:36,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:14:38,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []