./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:39:06,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:39:06,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:39:06,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:39:06,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:39:06,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:39:06,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:39:06,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:39:06,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:39:06,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:39:06,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:39:06,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:39:06,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:39:06,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:39:06,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:39:06,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:39:06,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:39:06,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:39:06,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:39:06,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:39:06,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:39:06,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:39:06,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:39:06,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:39:06,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:39:06,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:39:06,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:39:06,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:39:06,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:39:06,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:39:06,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:39:06,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:39:06,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:39:06,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:39:06,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:39:06,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:39:06,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:39:06,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:39:06,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:39:06,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:39:06,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:39:06,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 01:39:06,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:39:06,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:39:06,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:39:06,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:39:06,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:39:06,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:39:06,851 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:39:06,852 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:39:06,852 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:39:06,852 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:39:06,852 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:39:06,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:39:06,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:39:06,853 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:39:06,853 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:39:06,854 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:39:06,854 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:39:06,854 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:39:06,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:39:06,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:39:06,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:39:06,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:39:06,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:39:06,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:39:06,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:39:06,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:39:06,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:39:06,857 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 01:39:06,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:39:06,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:39:06,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:39:06,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:39:06,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:39:06,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:39:06,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:06,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:39:06,860 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:39:06,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:39:06,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:39:06,860 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:39:06,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:39:06,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:39:06,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:39:06,861 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_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2022-11-22 01:39:07,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:39:07,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:39:07,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:39:07,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:39:07,264 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:39:07,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-11-22 01:39:10,955 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:39:11,287 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:39:11,288 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2022-11-22 01:39:11,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/data/509bacd3c/b3e3e52d642b481ebd07c080100d4051/FLAG5669b69ea [2022-11-22 01:39:11,321 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/data/509bacd3c/b3e3e52d642b481ebd07c080100d4051 [2022-11-22 01:39:11,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:39:11,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:39:11,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:11,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:39:11,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:39:11,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790cad3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11, skipping insertion in model container [2022-11-22 01:39:11,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:39:11,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:39:11,636 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-22 01:39:11,792 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-11-22 01:39:11,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:11,810 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:39:11,828 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-22 01:39:11,858 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2022-11-22 01:39:11,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:39:11,902 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:39:11,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11 WrapperNode [2022-11-22 01:39:11,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:39:11,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:11,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:39:11,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:39:11,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,970 INFO L138 Inliner]: procedures = 173, calls = 24, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 188 [2022-11-22 01:39:11,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:39:11,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:39:11,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:39:11,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:39:11,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:11,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:12,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:12,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:12,034 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:12,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:12,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:39:12,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:39:12,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:39:12,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:39:12,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (1/1) ... [2022-11-22 01:39:12,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:39:12,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:39:12,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:39:12,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1097ab6-20a3-4126-8c00-01433ca27306/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:39:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:39:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-22 01:39:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-22 01:39:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:39:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 01:39:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:39:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:39:12,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:39:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:39:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 01:39:12,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:39:12,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:39:12,166 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 01:39:12,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:39:12,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:39:12,901 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:39:13,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:39:13,231 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:39:13,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:13 BoogieIcfgContainer [2022-11-22 01:39:13,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:39:13,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:39:13,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:39:13,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:39:13,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:39:11" (1/3) ... [2022-11-22 01:39:13,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcd61cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:13, skipping insertion in model container [2022-11-22 01:39:13,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:39:11" (2/3) ... [2022-11-22 01:39:13,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dcd61cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:39:13, skipping insertion in model container [2022-11-22 01:39:13,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:39:13" (3/3) ... [2022-11-22 01:39:13,254 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs.i [2022-11-22 01:39:13,265 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 01:39:13,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:39:13,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-22 01:39:13,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 01:39:13,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:39:13,446 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:39:13,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 117 transitions, 239 flow [2022-11-22 01:39:13,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 117 transitions, 239 flow [2022-11-22 01:39:13,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 117 transitions, 239 flow [2022-11-22 01:39:13,597 INFO L130 PetriNetUnfolder]: 8/176 cut-off events. [2022-11-22 01:39:13,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-22 01:39:13,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 176 events. 8/176 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 460 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 99. Up to 4 conditions per place. [2022-11-22 01:39:13,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 4712 [2022-11-22 01:39:24,314 INFO L134 LiptonReduction]: Checked pairs total: 26025 [2022-11-22 01:39:24,315 INFO L136 LiptonReduction]: Total number of compositions: 109 [2022-11-22 01:39:24,333 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 61 places, 61 transitions, 127 flow [2022-11-22 01:39:24,433 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 858 states, 662 states have (on average 2.599697885196375) internal successors, (1721), 857 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:24,456 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:39:24,465 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;@4a6f7d1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:39:24,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-22 01:39:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 858 states, 662 states have (on average 2.599697885196375) internal successors, (1721), 857 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:39:24,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:24,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:39:24,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-22 01:39:24,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 21442, now seen corresponding path program 1 times [2022-11-22 01:39:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:24,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776349130] [2022-11-22 01:39:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:24,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:24,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776349130] [2022-11-22 01:39:24,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776349130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:24,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:24,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:39:24,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14850794] [2022-11-22 01:39:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:24,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:39:24,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:24,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:39:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:39:24,751 INFO L87 Difference]: Start difference. First operand has 858 states, 662 states have (on average 2.599697885196375) internal successors, (1721), 857 states have internal predecessors, (1721), 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) [2022-11-22 01:39:24,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:24,888 INFO L93 Difference]: Finished difference Result 408 states and 799 transitions. [2022-11-22 01:39:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:39:24,892 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 [2022-11-22 01:39:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:24,919 INFO L225 Difference]: With dead ends: 408 [2022-11-22 01:39:24,919 INFO L226 Difference]: Without dead ends: 401 [2022-11-22 01:39:24,921 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 [2022-11-22 01:39:24,924 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:24,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-22 01:39:25,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-11-22 01:39:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 379 states have (on average 2.073878627968338) internal successors, (786), 400 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 786 transitions. [2022-11-22 01:39:25,049 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 786 transitions. Word has length 2 [2022-11-22 01:39:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:25,050 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 786 transitions. [2022-11-22 01:39:25,050 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) [2022-11-22 01:39:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 786 transitions. [2022-11-22 01:39:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:39:25,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:25,051 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 01:39:25,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:39:25,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-11-22 01:39:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1667681979, now seen corresponding path program 1 times [2022-11-22 01:39:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:25,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193981409] [2022-11-22 01:39:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:39:25,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:39:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:39:25,193 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:39:25,193 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:39:25,195 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-11-22 01:39:25,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-11-22 01:39:25,199 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-11-22 01:39:25,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-11-22 01:39:25,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-11-22 01:39:25,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-11-22 01:39:25,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-11-22 01:39:25,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-11-22 01:39:25,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-11-22 01:39:25,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-11-22 01:39:25,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-11-22 01:39:25,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-11-22 01:39:25,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-11-22 01:39:25,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-11-22 01:39:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-11-22 01:39:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-11-22 01:39:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-11-22 01:39:25,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-11-22 01:39:25,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-11-22 01:39:25,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-11-22 01:39:25,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-11-22 01:39:25,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-11-22 01:39:25,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-11-22 01:39:25,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-11-22 01:39:25,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-11-22 01:39:25,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-11-22 01:39:25,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-11-22 01:39:25,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-11-22 01:39:25,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-11-22 01:39:25,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-11-22 01:39:25,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-11-22 01:39:25,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-11-22 01:39:25,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-11-22 01:39:25,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-11-22 01:39:25,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-11-22 01:39:25,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-11-22 01:39:25,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-11-22 01:39:25,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:39:25,214 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 01:39:25,217 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 01:39:25,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-22 01:39:25,272 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:39:25,275 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:39:25,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 156 transitions, 324 flow [2022-11-22 01:39:25,276 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 156 transitions, 324 flow [2022-11-22 01:39:25,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 324 flow [2022-11-22 01:39:25,407 INFO L130 PetriNetUnfolder]: 13/276 cut-off events. [2022-11-22 01:39:25,408 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 01:39:25,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 276 events. 13/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1000 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2022-11-22 01:39:25,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 12388 [2022-11-22 01:39:45,380 INFO L134 LiptonReduction]: Checked pairs total: 73947 [2022-11-22 01:39:45,380 INFO L136 LiptonReduction]: Total number of compositions: 133 [2022-11-22 01:39:45,382 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 91 transitions, 194 flow [2022-11-22 01:39:46,511 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24174 states, 21623 states have (on average 3.3956435277251074) internal successors, (73424), 24173 states have internal predecessors, (73424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:46,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:39:46,514 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;@4a6f7d1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:39:46,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-22 01:39:46,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 24174 states, 21623 states have (on average 3.3956435277251074) internal successors, (73424), 24173 states have internal predecessors, (73424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:39:46,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:46,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:39:46,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-22 01:39:46,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash 31874, now seen corresponding path program 1 times [2022-11-22 01:39:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:46,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278478813] [2022-11-22 01:39:46,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:46,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:46,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278478813] [2022-11-22 01:39:46,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278478813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:46,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:46,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:39:46,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016205350] [2022-11-22 01:39:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:39:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:39:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:39:46,792 INFO L87 Difference]: Start difference. First operand has 24174 states, 21623 states have (on average 3.3956435277251074) internal successors, (73424), 24173 states have internal predecessors, (73424), 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) [2022-11-22 01:39:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:47,109 INFO L93 Difference]: Finished difference Result 7848 states and 23137 transitions. [2022-11-22 01:39:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:39:47,126 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 [2022-11-22 01:39:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:47,218 INFO L225 Difference]: With dead ends: 7848 [2022-11-22 01:39:47,218 INFO L226 Difference]: Without dead ends: 7817 [2022-11-22 01:39:47,219 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 [2022-11-22 01:39:47,225 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:47,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:39:47,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2022-11-22 01:39:47,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 7817. [2022-11-22 01:39:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7817 states, 7720 states have (on average 2.9860103626943006) internal successors, (23052), 7816 states have internal predecessors, (23052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7817 states to 7817 states and 23052 transitions. [2022-11-22 01:39:47,989 INFO L78 Accepts]: Start accepts. Automaton has 7817 states and 23052 transitions. Word has length 2 [2022-11-22 01:39:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:47,990 INFO L495 AbstractCegarLoop]: Abstraction has 7817 states and 23052 transitions. [2022-11-22 01:39:47,990 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) [2022-11-22 01:39:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 7817 states and 23052 transitions. [2022-11-22 01:39:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:39:47,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:47,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:47,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:39:47,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-22 01:39:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1746302216, now seen corresponding path program 1 times [2022-11-22 01:39:47,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:47,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741226403] [2022-11-22 01:39:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:47,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:48,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:48,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:48,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741226403] [2022-11-22 01:39:48,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741226403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:48,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618882436] [2022-11-22 01:39:48,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:48,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:48,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:48,189 INFO L87 Difference]: Start difference. First operand 7817 states and 23052 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:48,685 INFO L93 Difference]: Finished difference Result 8410 states and 24779 transitions. [2022-11-22 01:39:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:48,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 [2022-11-22 01:39:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:48,781 INFO L225 Difference]: With dead ends: 8410 [2022-11-22 01:39:48,784 INFO L226 Difference]: Without dead ends: 8410 [2022-11-22 01:39:48,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:48,786 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:48,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 43 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:39:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8410 states. [2022-11-22 01:39:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8410 to 8098. [2022-11-22 01:39:49,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 8002 states have (on average 2.982629342664334) internal successors, (23867), 8097 states have internal predecessors, (23867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 23867 transitions. [2022-11-22 01:39:49,441 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 23867 transitions. Word has length 7 [2022-11-22 01:39:49,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:49,476 INFO L495 AbstractCegarLoop]: Abstraction has 8098 states and 23867 transitions. [2022-11-22 01:39:49,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 23867 transitions. [2022-11-22 01:39:49,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:39:49,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:49,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:49,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:39:49,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-22 01:39:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1135811509, now seen corresponding path program 1 times [2022-11-22 01:39:49,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:49,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228640136] [2022-11-22 01:39:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:49,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:49,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:49,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228640136] [2022-11-22 01:39:49,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228640136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:49,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:49,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369418450] [2022-11-22 01:39:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:49,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:49,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:49,600 INFO L87 Difference]: Start difference. First operand 8098 states and 23867 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:39:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:50,089 INFO L93 Difference]: Finished difference Result 10646 states and 30732 transitions. [2022-11-22 01:39:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:50,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 9 [2022-11-22 01:39:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:50,160 INFO L225 Difference]: With dead ends: 10646 [2022-11-22 01:39:50,161 INFO L226 Difference]: Without dead ends: 10646 [2022-11-22 01:39:50,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:50,162 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 48 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:50,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 41 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:39:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10646 states. [2022-11-22 01:39:50,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10646 to 8654. [2022-11-22 01:39:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8654 states, 8564 states have (on average 2.9337926202709013) internal successors, (25125), 8653 states have internal predecessors, (25125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8654 states to 8654 states and 25125 transitions. [2022-11-22 01:39:50,673 INFO L78 Accepts]: Start accepts. Automaton has 8654 states and 25125 transitions. Word has length 9 [2022-11-22 01:39:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:50,673 INFO L495 AbstractCegarLoop]: Abstraction has 8654 states and 25125 transitions. [2022-11-22 01:39:50,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:39:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 8654 states and 25125 transitions. [2022-11-22 01:39:50,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 01:39:50,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:50,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:39:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:39:50,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-22 01:39:50,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1267657052, now seen corresponding path program 1 times [2022-11-22 01:39:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:50,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150942493] [2022-11-22 01:39:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:39:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:39:50,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:39:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150942493] [2022-11-22 01:39:50,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150942493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:39:50,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:39:50,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:39:50,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752591058] [2022-11-22 01:39:50,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:39:50,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:39:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:39:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:39:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:50,755 INFO L87 Difference]: Start difference. First operand 8654 states and 25125 transitions. Second operand has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:39:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:39:51,126 INFO L93 Difference]: Finished difference Result 9265 states and 26864 transitions. [2022-11-22 01:39:51,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:39:51,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) 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 9 [2022-11-22 01:39:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:39:51,177 INFO L225 Difference]: With dead ends: 9265 [2022-11-22 01:39:51,177 INFO L226 Difference]: Without dead ends: 9265 [2022-11-22 01:39:51,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:39:51,178 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:39:51,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 42 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:39:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9265 states. [2022-11-22 01:39:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9265 to 8878. [2022-11-22 01:39:51,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8878 states, 8793 states have (on average 2.9277834641191856) internal successors, (25744), 8877 states have internal predecessors, (25744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:39:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8878 states to 8878 states and 25744 transitions. [2022-11-22 01:39:51,586 INFO L78 Accepts]: Start accepts. Automaton has 8878 states and 25744 transitions. Word has length 9 [2022-11-22 01:39:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:39:51,587 INFO L495 AbstractCegarLoop]: Abstraction has 8878 states and 25744 transitions. [2022-11-22 01:39:51,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) 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) [2022-11-22 01:39:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 8878 states and 25744 transitions. [2022-11-22 01:39:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 01:39:51,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:39:51,591 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-22 01:39:51,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:39:51,591 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-11-22 01:39:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:39:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1648873634, now seen corresponding path program 1 times [2022-11-22 01:39:51,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:39:51,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5569893] [2022-11-22 01:39:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:39:51,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:39:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:39:51,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:39:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:39:51,622 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:39:51,623 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:39:51,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 49 remaining) [2022-11-22 01:39:51,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (47 of 49 remaining) [2022-11-22 01:39:51,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (46 of 49 remaining) [2022-11-22 01:39:51,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 49 remaining) [2022-11-22 01:39:51,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 49 remaining) [2022-11-22 01:39:51,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 49 remaining) [2022-11-22 01:39:51,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (42 of 49 remaining) [2022-11-22 01:39:51,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (41 of 49 remaining) [2022-11-22 01:39:51,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (40 of 49 remaining) [2022-11-22 01:39:51,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (39 of 49 remaining) [2022-11-22 01:39:51,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (38 of 49 remaining) [2022-11-22 01:39:51,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (37 of 49 remaining) [2022-11-22 01:39:51,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (36 of 49 remaining) [2022-11-22 01:39:51,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (35 of 49 remaining) [2022-11-22 01:39:51,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (34 of 49 remaining) [2022-11-22 01:39:51,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (33 of 49 remaining) [2022-11-22 01:39:51,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (32 of 49 remaining) [2022-11-22 01:39:51,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (31 of 49 remaining) [2022-11-22 01:39:51,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (30 of 49 remaining) [2022-11-22 01:39:51,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (29 of 49 remaining) [2022-11-22 01:39:51,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (28 of 49 remaining) [2022-11-22 01:39:51,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (27 of 49 remaining) [2022-11-22 01:39:51,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (26 of 49 remaining) [2022-11-22 01:39:51,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 49 remaining) [2022-11-22 01:39:51,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (24 of 49 remaining) [2022-11-22 01:39:51,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 49 remaining) [2022-11-22 01:39:51,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 49 remaining) [2022-11-22 01:39:51,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 49 remaining) [2022-11-22 01:39:51,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 49 remaining) [2022-11-22 01:39:51,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 49 remaining) [2022-11-22 01:39:51,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 49 remaining) [2022-11-22 01:39:51,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (17 of 49 remaining) [2022-11-22 01:39:51,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (16 of 49 remaining) [2022-11-22 01:39:51,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (15 of 49 remaining) [2022-11-22 01:39:51,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (14 of 49 remaining) [2022-11-22 01:39:51,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (13 of 49 remaining) [2022-11-22 01:39:51,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (12 of 49 remaining) [2022-11-22 01:39:51,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 49 remaining) [2022-11-22 01:39:51,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 49 remaining) [2022-11-22 01:39:51,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 49 remaining) [2022-11-22 01:39:51,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 49 remaining) [2022-11-22 01:39:51,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 49 remaining) [2022-11-22 01:39:51,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 49 remaining) [2022-11-22 01:39:51,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 49 remaining) [2022-11-22 01:39:51,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (4 of 49 remaining) [2022-11-22 01:39:51,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (3 of 49 remaining) [2022-11-22 01:39:51,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (2 of 49 remaining) [2022-11-22 01:39:51,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (1 of 49 remaining) [2022-11-22 01:39:51,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (0 of 49 remaining) [2022-11-22 01:39:51,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:39:51,633 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-22 01:39:51,634 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-22 01:39:51,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-22 01:39:51,669 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-22 01:39:51,672 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 01:39:51,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 195 transitions, 411 flow [2022-11-22 01:39:51,673 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 195 transitions, 411 flow [2022-11-22 01:39:51,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 411 flow [2022-11-22 01:39:51,736 INFO L130 PetriNetUnfolder]: 18/376 cut-off events. [2022-11-22 01:39:51,736 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-22 01:39:51,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 376 events. 18/376 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1549 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 280. Up to 8 conditions per place. [2022-11-22 01:39:51,756 INFO L119 LiptonReduction]: Number of co-enabled transitions 23028 [2022-11-22 01:40:35,468 INFO L134 LiptonReduction]: Checked pairs total: 148416 [2022-11-22 01:40:35,468 INFO L136 LiptonReduction]: Total number of compositions: 176 [2022-11-22 01:40:35,470 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 120 places, 119 transitions, 259 flow [2022-11-22 01:40:57,421 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 653277 states, 620134 states have (on average 4.2524019002344655) internal successors, (2637059), 653276 states have internal predecessors, (2637059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:57,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:40:57,432 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;@4a6f7d1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:40:57,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-11-22 01:40:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 653277 states, 620134 states have (on average 4.2524019002344655) internal successors, (2637059), 653276 states have internal predecessors, (2637059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:40:58,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-22 01:40:58,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:40:58,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-22 01:40:58,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-22 01:40:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:40:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 44546, now seen corresponding path program 1 times [2022-11-22 01:40:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:40:58,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676965921] [2022-11-22 01:40:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:40:58,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:40:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:40:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:40:58,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:40:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676965921] [2022-11-22 01:40:58,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676965921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:40:58,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:40:58,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 01:40:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705457517] [2022-11-22 01:40:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:40:58,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:40:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:40:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:40:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:41:01,402 INFO L87 Difference]: Start difference. First operand has 653277 states, 620134 states have (on average 4.2524019002344655) internal successors, (2637059), 653276 states have internal predecessors, (2637059), 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) [2022-11-22 01:41:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:04,363 INFO L93 Difference]: Finished difference Result 141636 states and 558937 transitions. [2022-11-22 01:41:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:41:04,364 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 [2022-11-22 01:41:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:05,943 INFO L225 Difference]: With dead ends: 141636 [2022-11-22 01:41:05,943 INFO L226 Difference]: Without dead ends: 141521 [2022-11-22 01:41:05,944 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 [2022-11-22 01:41:05,945 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:05,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:41:07,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141521 states. [2022-11-22 01:41:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141521 to 141521. [2022-11-22 01:41:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141521 states, 141121 states have (on average 3.9577100502405735) internal successors, (558516), 141520 states have internal predecessors, (558516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:41:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141521 states to 141521 states and 558516 transitions. [2022-11-22 01:41:15,062 INFO L78 Accepts]: Start accepts. Automaton has 141521 states and 558516 transitions. Word has length 2 [2022-11-22 01:41:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:15,062 INFO L495 AbstractCegarLoop]: Abstraction has 141521 states and 558516 transitions. [2022-11-22 01:41:15,063 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) [2022-11-22 01:41:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 141521 states and 558516 transitions. [2022-11-22 01:41:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:41:15,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:15,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:15,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:41:15,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2022-11-22 01:41:15,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:15,065 INFO L85 PathProgramCache]: Analyzing trace with hash 520831843, now seen corresponding path program 1 times [2022-11-22 01:41:15,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:15,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709536982] [2022-11-22 01:41:15,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:15,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:41:15,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:15,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709536982] [2022-11-22 01:41:15,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709536982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:15,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:15,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:41:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91314860] [2022-11-22 01:41:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:15,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:15,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:15,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:15,149 INFO L87 Difference]: Start difference. First operand 141521 states and 558516 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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)