./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4e7fbc69 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_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW --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 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb --- 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-4e7fbc6 [2022-11-23 14:25:50,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:25:50,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:25:50,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:25:50,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:25:50,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:25:50,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:25:50,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:25:50,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:25:50,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:25:50,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:25:50,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:25:50,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:25:50,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:25:50,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:25:50,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:25:50,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:25:50,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:25:50,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:25:50,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:25:50,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:25:50,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:25:50,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:25:50,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:25:50,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:25:50,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:25:50,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:25:50,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:25:50,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:25:50,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:25:50,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:25:50,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:25:50,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:25:50,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:25:50,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:25:50,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:25:50,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:25:50,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:25:50,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:25:50,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:25:50,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:25:50,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-23 14:25:50,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:25:50,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:25:50,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:25:50,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:25:50,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:25:50,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:25:50,770 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:25:50,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:25:50,770 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:25:50,770 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:25:50,770 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:25:50,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:25:50,776 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:25:50,777 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:25:50,777 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:25:50,777 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:25:50,777 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:25:50,777 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:25:50,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:25:50,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:25:50,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 14:25:50,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:25:50,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:25:50,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:25:50,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:25:50,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:25:50,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:25:50,780 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-23 14:25:50,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:25:50,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:25:50,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:25:50,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:25:50,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:25:50,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:25:50,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:25:50,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:25:50,781 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:25:50,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:25:50,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:25:50,782 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:25:50,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:25:50,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:25:50,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:25:50,783 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_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb [2022-11-23 14:25:51,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:25:51,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:25:51,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:25:51,049 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:25:51,050 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:25:51,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-11-23 14:25:54,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:25:54,389 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:25:54,390 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-11-23 14:25:54,403 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/data/172c3ecc3/4696c9731eb14169adae63e54562ad49/FLAG5a3c7365e [2022-11-23 14:25:54,421 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/data/172c3ecc3/4696c9731eb14169adae63e54562ad49 [2022-11-23 14:25:54,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:25:54,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:25:54,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:25:54,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:25:54,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:25:54,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:54" (1/1) ... [2022-11-23 14:25:54,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e08b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:54, skipping insertion in model container [2022-11-23 14:25:54,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:25:54" (1/1) ... [2022-11-23 14:25:54,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:25:54,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:25:54,880 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_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-11-23 14:25:54,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:25:54,915 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:25:54,977 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_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-11-23 14:25:55,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:25:55,048 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:25:55,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55 WrapperNode [2022-11-23 14:25:55,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:25:55,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:25:55,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:25:55,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:25:55,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,124 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2022-11-23 14:25:55,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:25:55,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:25:55,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:25:55,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:25:55,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,191 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:25:55,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:25:55,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:25:55,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:25:55,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (1/1) ... [2022-11-23 14:25:55,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:25:55,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:25:55,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:25:55,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c2d59b1-1c84-4f3e-9f32-4ba0831d5a7a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:25:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:25:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:25:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:25:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-23 14:25:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-23 14:25:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:25:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:25:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:25:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:25:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:25:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-23 14:25:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-23 14:25:55,293 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:25:55,471 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:25:55,473 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:25:55,957 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:25:56,090 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:25:56,090 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:25:56,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:56 BoogieIcfgContainer [2022-11-23 14:25:56,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:25:56,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:25:56,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:25:56,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:25:56,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:25:54" (1/3) ... [2022-11-23 14:25:56,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a9f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:56, skipping insertion in model container [2022-11-23 14:25:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:25:55" (2/3) ... [2022-11-23 14:25:56,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792a9f12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:25:56, skipping insertion in model container [2022-11-23 14:25:56,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:25:56" (3/3) ... [2022-11-23 14:25:56,103 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2b.i [2022-11-23 14:25:56,119 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:25:56,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:25:56,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-23 14:25:56,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:25:56,277 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-23 14:25:56,335 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:25:56,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 210 transitions, 452 flow [2022-11-23 14:25:56,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 210 transitions, 452 flow [2022-11-23 14:25:56,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 210 transitions, 452 flow [2022-11-23 14:25:56,533 INFO L130 PetriNetUnfolder]: 2/206 cut-off events. [2022-11-23 14:25:56,534 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-23 14:25:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 206 events. 2/206 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 396 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2022-11-23 14:25:56,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 16682 [2022-11-23 14:26:02,753 INFO L134 LiptonReduction]: Checked pairs total: 72440 [2022-11-23 14:26:02,754 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-23 14:26:02,767 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 116 places, 103 transitions, 238 flow [2022-11-23 14:26:18,808 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 439459 states, 431590 states have (on average 4.459556523552446) internal successors, (1924700), 439458 states have internal predecessors, (1924700), 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) [2022-11-23 14:26:18,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:26:18,896 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;@44541da6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:26:18,896 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-23 14:26:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 439459 states, 431590 states have (on average 4.459556523552446) internal successors, (1924700), 439458 states have internal predecessors, (1924700), 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) [2022-11-23 14:26:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 14:26:19,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:19,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 14:26:19,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr0ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-23 14:26:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 688831, now seen corresponding path program 1 times [2022-11-23 14:26:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:19,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002050651] [2022-11-23 14:26:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:19,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:19,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002050651] [2022-11-23 14:26:19,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002050651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:19,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:19,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 14:26:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115116362] [2022-11-23 14:26:19,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:19,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:26:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:26:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:26:20,488 INFO L87 Difference]: Start difference. First operand has 439459 states, 431590 states have (on average 4.459556523552446) internal successors, (1924700), 439458 states have internal predecessors, (1924700), 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 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-23 14:26:24,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:24,664 INFO L93 Difference]: Finished difference Result 143571 states and 597046 transitions. [2022-11-23 14:26:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:26:24,667 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-23 14:26:24,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:26,041 INFO L225 Difference]: With dead ends: 143571 [2022-11-23 14:26:26,042 INFO L226 Difference]: Without dead ends: 143564 [2022-11-23 14:26:26,043 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 [2022-11-23 14:26:26,049 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:26,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143564 states. [2022-11-23 14:26:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143564 to 143564. [2022-11-23 14:26:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143564 states, 143124 states have (on average 4.171354909029932) internal successors, (597021), 143563 states have internal predecessors, (597021), 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) [2022-11-23 14:26:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143564 states to 143564 states and 597021 transitions. [2022-11-23 14:26:34,097 INFO L78 Accepts]: Start accepts. Automaton has 143564 states and 597021 transitions. Word has length 3 [2022-11-23 14:26:34,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:34,098 INFO L495 AbstractCegarLoop]: Abstraction has 143564 states and 597021 transitions. [2022-11-23 14:26:34,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-23 14:26:34,099 INFO L276 IsEmpty]: Start isEmpty. Operand 143564 states and 597021 transitions. [2022-11-23 14:26:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:26:34,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:34,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:26:34,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:26:34,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-23 14:26:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash -953288427, now seen corresponding path program 1 times [2022-11-23 14:26:34,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:34,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228272409] [2022-11-23 14:26:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:34,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:34,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:34,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228272409] [2022-11-23 14:26:34,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228272409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:34,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:34,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391967304] [2022-11-23 14:26:34,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:34,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:34,188 INFO L87 Difference]: Start difference. First operand 143564 states and 597021 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:26:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:37,093 INFO L93 Difference]: Finished difference Result 156532 states and 652759 transitions. [2022-11-23 14:26:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:26:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:39,087 INFO L225 Difference]: With dead ends: 156532 [2022-11-23 14:26:39,087 INFO L226 Difference]: Without dead ends: 156532 [2022-11-23 14:26:39,088 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 [2022-11-23 14:26:39,089 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 59 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:39,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 104 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156532 states. [2022-11-23 14:26:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156532 to 156532. [2022-11-23 14:26:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156532 states, 156092 states have (on average 4.181886323450273) internal successors, (652759), 156531 states have internal predecessors, (652759), 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)