./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/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_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 --- 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 14:52:54,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:52:54,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:52:54,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:52:54,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:52:54,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:52:54,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:52:54,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:52:54,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:52:54,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:52:54,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:52:54,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:52:54,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:52:54,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:52:54,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:52:54,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:52:54,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:52:54,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:52:54,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:52:54,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:52:54,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:52:54,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:52:54,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:52:54,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:52:54,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:52:54,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:52:54,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:52:54,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:52:54,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:52:54,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:52:54,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:52:54,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:52:54,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:52:54,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:52:54,810 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:52:54,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:52:54,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:52:54,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:52:54,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:52:54,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:52:54,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:52:54,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:52:54,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:52:54,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:52:54,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:52:54,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:52:54,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:52:54,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:52:54,883 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:52:54,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:52:54,883 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:52:54,883 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:52:54,884 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:52:54,885 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:52:54,885 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:52:54,885 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:52:54,885 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:52:54,886 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:52:54,886 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:52:54,886 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:52:54,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:52:54,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:52:54,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:52:54,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:52:54,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:52:54,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:52:54,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:52:54,888 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:52:54,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:52:54,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:52:54,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:52:54,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:52:54,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:52:54,890 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:52:54,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:52:54,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:52:54,892 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:52:54,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:52:54,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:52:54,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:52:54,902 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_08b738f2-b0ab-4426-b52e-06af2a77257f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2689726c89c7be154f3b0bf0875aa4770854a9a3388665dc7aff0604f303b757 [2022-11-23 14:52:55,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:52:55,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:52:55,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:52:55,205 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:52:55,206 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:52:55,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-11-23 14:52:58,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:52:58,929 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:52:58,930 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-11-23 14:52:58,983 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/data/49daa7aaf/4f8568e1425844d18d28439876e25aac/FLAGe33ece27b [2022-11-23 14:52:59,002 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/data/49daa7aaf/4f8568e1425844d18d28439876e25aac [2022-11-23 14:52:59,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:52:59,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:52:59,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:52:59,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:52:59,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:52:59,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:59" (1/1) ... [2022-11-23 14:52:59,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac6ae0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:59, skipping insertion in model container [2022-11-23 14:52:59,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:59" (1/1) ... [2022-11-23 14:52:59,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:52:59,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:53:01,169 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_08b738f2-b0ab-4426-b52e-06af2a77257f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-11-23 14:53:01,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:53:01,340 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:53:01,889 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_08b738f2-b0ab-4426-b52e-06af2a77257f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i[258393,258406] [2022-11-23 14:53:01,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:53:02,036 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:53:02,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02 WrapperNode [2022-11-23 14:53:02,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:53:02,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:53:02,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:53:02,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:53:02,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,359 INFO L138 Inliner]: procedures = 303, calls = 3997, calls flagged for inlining = 138, calls inlined = 95, statements flattened = 5164 [2022-11-23 14:53:02,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:53:02,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:53:02,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:53:02,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:53:02,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,631 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:53:02,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:53:02,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:53:02,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:53:02,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (1/1) ... [2022-11-23 14:53:02,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:53:02,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:53:02,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:53:02,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:53:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure rio_uevent [2022-11-23 14:53:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_uevent [2022-11-23 14:53:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-23 14:53:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-23 14:53:02,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:53:02,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:53:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:53:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-23 14:53:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-23 14:53:02,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-23 14:53:02,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-23 14:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-23 14:53:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-23 14:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:53:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:53:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_16 [2022-11-23 14:53:02,780 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_16 [2022-11-23 14:53:02,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-23 14:53:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-23 14:53:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:53:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:53:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_remove [2022-11-23 14:53:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_remove [2022-11-23 14:53:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:53:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:53:02,781 INFO L130 BoogieDeclarations]: Found specification of procedure bus_scan_store [2022-11-23 14:53:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_scan_store [2022-11-23 14:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:53:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 14:53:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 14:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure disc_work_handler [2022-11-23 14:53:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure disc_work_handler [2022-11-23 14:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:53:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_put [2022-11-23 14:53:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_put [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-23 14:53:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:53:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_16 [2022-11-23 14:53:02,783 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_16 [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:53:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_read_config_32 [2022-11-23 14:53:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_read_config_32 [2022-11-23 14:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure rio_mport_write_config_32 [2022-11-23 14:53:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_mport_write_config_32 [2022-11-23 14:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 14:53:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 14:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:53:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:53:02,784 INFO L130 BoogieDeclarations]: Found specification of procedure rio_name [2022-11-23 14:53:02,784 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_name [2022-11-23 14:53:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 14:53:02,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 14:53:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure rio_device_probe [2022-11-23 14:53:02,785 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_device_probe [2022-11-23 14:53:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:53:02,785 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:53:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_32 [2022-11-23 14:53:02,785 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_32 [2022-11-23 14:53:02,785 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-23 14:53:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-23 14:53:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:53:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2022-11-23 14:53:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~~u32~0~TO~int [2022-11-23 14:53:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure rio_dev_get [2022-11-23 14:53:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_dev_get [2022-11-23 14:53:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:53:02,786 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:53:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:53:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:53:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:53:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:53:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure release_resource [2022-11-23 14:53:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resource [2022-11-23 14:53:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_8 [2022-11-23 14:53:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_8 [2022-11-23 14:53:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_bus [2022-11-23 14:53:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_bus [2022-11-23 14:53:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure rio_read_config_32 [2022-11-23 14:53:02,788 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_read_config_32 [2022-11-23 14:53:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-23 14:53:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-23 14:53:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure rio_match_device [2022-11-23 14:53:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_match_device [2022-11-23 14:53:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:53:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:53:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure rio_write_config_8 [2022-11-23 14:53:02,789 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_write_config_8 [2022-11-23 14:53:02,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:53:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:53:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:53:02,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2022-11-23 14:53:02,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~~u16~0~X~~u8~0~X~~u32~0~X~int~X~$Pointer$~TO~int [2022-11-23 14:53:03,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:53:03,623 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:53:03,815 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:53:09,866 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:53:10,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:53:10,694 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:53:10,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:53:10 BoogieIcfgContainer [2022-11-23 14:53:10,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:53:10,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:53:10,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:53:10,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:53:10,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:52:59" (1/3) ... [2022-11-23 14:53:10,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361fd5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:53:10, skipping insertion in model container [2022-11-23 14:53:10,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:53:02" (2/3) ... [2022-11-23 14:53:10,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361fd5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:53:10, skipping insertion in model container [2022-11-23 14:53:10,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:53:10" (3/3) ... [2022-11-23 14:53:10,710 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--rapidio--rapidio.ko-entry_point.cil.out.i [2022-11-23 14:53:10,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:53:10,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:53:10,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:53:10,813 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;@59f4e26a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:53:10,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:53:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 720 states, 474 states have (on average 1.3924050632911393) internal successors, (660), 505 states have internal predecessors, (660), 197 states have call successors, (197), 48 states have call predecessors, (197), 47 states have return successors, (177), 176 states have call predecessors, (177), 177 states have call successors, (177) [2022-11-23 14:53:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 14:53:10,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:10,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:10,835 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash 117096244, now seen corresponding path program 1 times [2022-11-23 14:53:10,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:10,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539932018] [2022-11-23 14:53:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 14:53:12,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:12,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539932018] [2022-11-23 14:53:12,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539932018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:12,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:12,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:12,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538230805] [2022-11-23 14:53:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:12,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:12,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:12,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:12,370 INFO L87 Difference]: Start difference. First operand has 720 states, 474 states have (on average 1.3924050632911393) internal successors, (660), 505 states have internal predecessors, (660), 197 states have call successors, (197), 48 states have call predecessors, (197), 47 states have return successors, (177), 176 states have call predecessors, (177), 177 states have call successors, (177) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:53:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:13,465 INFO L93 Difference]: Finished difference Result 2124 states and 3089 transitions. [2022-11-23 14:53:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 64 [2022-11-23 14:53:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:13,501 INFO L225 Difference]: With dead ends: 2124 [2022-11-23 14:53:13,501 INFO L226 Difference]: Without dead ends: 1369 [2022-11-23 14:53:13,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:13,516 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 983 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:13,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 2018 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:53:13,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-11-23 14:53:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1366. [2022-11-23 14:53:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 930 states have (on average 1.3483870967741935) internal successors, (1254), 947 states have internal predecessors, (1254), 343 states have call successors, (343), 93 states have call predecessors, (343), 92 states have return successors, (341), 339 states have call predecessors, (341), 341 states have call successors, (341) [2022-11-23 14:53:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 1938 transitions. [2022-11-23 14:53:13,687 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 1938 transitions. Word has length 64 [2022-11-23 14:53:13,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:13,688 INFO L495 AbstractCegarLoop]: Abstraction has 1366 states and 1938 transitions. [2022-11-23 14:53:13,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:53:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 1938 transitions. [2022-11-23 14:53:13,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 14:53:13,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:13,692 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:13,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:53:13,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:13,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:13,693 INFO L85 PathProgramCache]: Analyzing trace with hash 753674143, now seen corresponding path program 1 times [2022-11-23 14:53:13,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:13,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548897766] [2022-11-23 14:53:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 14:53:14,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548897766] [2022-11-23 14:53:14,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548897766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:14,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:14,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:14,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914029897] [2022-11-23 14:53:14,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:14,525 INFO L87 Difference]: Start difference. First operand 1366 states and 1938 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:53:15,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:15,324 INFO L93 Difference]: Finished difference Result 2640 states and 3778 transitions. [2022-11-23 14:53:15,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:15,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 67 [2022-11-23 14:53:15,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:15,340 INFO L225 Difference]: With dead ends: 2640 [2022-11-23 14:53:15,340 INFO L226 Difference]: Without dead ends: 2635 [2022-11-23 14:53:15,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:15,343 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 899 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:15,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1945 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:53:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2635 states. [2022-11-23 14:53:15,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2635 to 2625. [2022-11-23 14:53:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2625 states, 1792 states have (on average 1.3532366071428572) internal successors, (2425), 1833 states have internal predecessors, (2425), 656 states have call successors, (656), 179 states have call predecessors, (656), 176 states have return successors, (674), 640 states have call predecessors, (674), 654 states have call successors, (674) [2022-11-23 14:53:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2625 states to 2625 states and 3755 transitions. [2022-11-23 14:53:15,498 INFO L78 Accepts]: Start accepts. Automaton has 2625 states and 3755 transitions. Word has length 67 [2022-11-23 14:53:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:15,500 INFO L495 AbstractCegarLoop]: Abstraction has 2625 states and 3755 transitions. [2022-11-23 14:53:15,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 14:53:15,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2625 states and 3755 transitions. [2022-11-23 14:53:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 14:53:15,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:15,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:15,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:53:15,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1963041394, now seen corresponding path program 1 times [2022-11-23 14:53:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:15,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267595158] [2022-11-23 14:53:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 14:53:16,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:16,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267595158] [2022-11-23 14:53:16,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267595158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:16,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:16,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525348235] [2022-11-23 14:53:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:16,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:16,218 INFO L87 Difference]: Start difference. First operand 2625 states and 3755 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:53:17,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:17,161 INFO L93 Difference]: Finished difference Result 7755 states and 11068 transitions. [2022-11-23 14:53:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:17,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-11-23 14:53:17,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:17,195 INFO L225 Difference]: With dead ends: 7755 [2022-11-23 14:53:17,196 INFO L226 Difference]: Without dead ends: 5139 [2022-11-23 14:53:17,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:17,213 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 934 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:17,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1907 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:53:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2022-11-23 14:53:17,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 5131. [2022-11-23 14:53:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 3498 states have (on average 1.349056603773585) internal successors, (4719), 3581 states have internal predecessors, (4719), 1280 states have call successors, (1280), 357 states have call predecessors, (1280), 352 states have return successors, (1316), 1248 states have call predecessors, (1316), 1278 states have call successors, (1316) [2022-11-23 14:53:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 7315 transitions. [2022-11-23 14:53:17,507 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 7315 transitions. Word has length 91 [2022-11-23 14:53:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:17,508 INFO L495 AbstractCegarLoop]: Abstraction has 5131 states and 7315 transitions. [2022-11-23 14:53:17,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:53:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 7315 transitions. [2022-11-23 14:53:17,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-23 14:53:17,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:17,513 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:17,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:53:17,513 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1599099100, now seen corresponding path program 1 times [2022-11-23 14:53:17,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:17,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130791298] [2022-11-23 14:53:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-23 14:53:18,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:18,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130791298] [2022-11-23 14:53:18,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130791298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:18,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:18,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226984228] [2022-11-23 14:53:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:18,152 INFO L87 Difference]: Start difference. First operand 5131 states and 7315 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:53:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:19,330 INFO L93 Difference]: Finished difference Result 14927 states and 21236 transitions. [2022-11-23 14:53:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2022-11-23 14:53:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:19,393 INFO L225 Difference]: With dead ends: 14927 [2022-11-23 14:53:19,393 INFO L226 Difference]: Without dead ends: 9805 [2022-11-23 14:53:19,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:19,413 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 919 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:19,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2010 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:53:19,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2022-11-23 14:53:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 9795. [2022-11-23 14:53:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9795 states, 6666 states have (on average 1.3427842784278428) internal successors, (8951), 6821 states have internal predecessors, (8951), 2448 states have call successors, (2448), 689 states have call predecessors, (2448), 680 states have return successors, (2518), 2388 states have call predecessors, (2518), 2446 states have call successors, (2518) [2022-11-23 14:53:20,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 13917 transitions. [2022-11-23 14:53:20,002 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 13917 transitions. Word has length 103 [2022-11-23 14:53:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:20,005 INFO L495 AbstractCegarLoop]: Abstraction has 9795 states and 13917 transitions. [2022-11-23 14:53:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 14:53:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 13917 transitions. [2022-11-23 14:53:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 14:53:20,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:20,015 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:20,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:53:20,016 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash -803756423, now seen corresponding path program 1 times [2022-11-23 14:53:20,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:20,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70230096] [2022-11-23 14:53:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:20,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-23 14:53:20,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:20,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70230096] [2022-11-23 14:53:20,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70230096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:20,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:20,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710678822] [2022-11-23 14:53:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:20,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:20,703 INFO L87 Difference]: Start difference. First operand 9795 states and 13917 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:53:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:22,162 INFO L93 Difference]: Finished difference Result 27061 states and 38366 transitions. [2022-11-23 14:53:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:22,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-11-23 14:53:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:22,247 INFO L225 Difference]: With dead ends: 27061 [2022-11-23 14:53:22,247 INFO L226 Difference]: Without dead ends: 17275 [2022-11-23 14:53:22,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:22,279 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 746 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:22,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2034 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:53:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17275 states. [2022-11-23 14:53:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17275 to 17237. [2022-11-23 14:53:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17237 states, 11880 states have (on average 1.3411616161616162) internal successors, (15933), 12073 states have internal predecessors, (15933), 4196 states have call successors, (4196), 1169 states have call predecessors, (4196), 1160 states have return successors, (4274), 4122 states have call predecessors, (4274), 4194 states have call successors, (4274) [2022-11-23 14:53:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17237 states to 17237 states and 24403 transitions. [2022-11-23 14:53:23,285 INFO L78 Accepts]: Start accepts. Automaton has 17237 states and 24403 transitions. Word has length 130 [2022-11-23 14:53:23,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:23,286 INFO L495 AbstractCegarLoop]: Abstraction has 17237 states and 24403 transitions. [2022-11-23 14:53:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:53:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17237 states and 24403 transitions. [2022-11-23 14:53:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-23 14:53:23,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:23,294 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:23,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:53:23,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:23,295 INFO L85 PathProgramCache]: Analyzing trace with hash -175758755, now seen corresponding path program 1 times [2022-11-23 14:53:23,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:23,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103338738] [2022-11-23 14:53:23,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:23,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 14:53:24,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:24,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103338738] [2022-11-23 14:53:24,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103338738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:24,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:24,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121118321] [2022-11-23 14:53:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:24,007 INFO L87 Difference]: Start difference. First operand 17237 states and 24403 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 14:53:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:25,663 INFO L93 Difference]: Finished difference Result 42915 states and 60778 transitions. [2022-11-23 14:53:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:25,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-11-23 14:53:25,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:25,786 INFO L225 Difference]: With dead ends: 42915 [2022-11-23 14:53:25,786 INFO L226 Difference]: Without dead ends: 25687 [2022-11-23 14:53:25,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:25,849 INFO L413 NwaCegarLoop]: 1459 mSDtfsCounter, 940 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:25,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2318 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:53:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25687 states. [2022-11-23 14:53:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25687 to 25679. [2022-11-23 14:53:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25679 states, 17758 states have (on average 1.3386079513458722) internal successors, (23771), 18037 states have internal predecessors, (23771), 6192 states have call successors, (6192), 1741 states have call predecessors, (6192), 1728 states have return successors, (6306), 6084 states have call predecessors, (6306), 6190 states have call successors, (6306) [2022-11-23 14:53:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25679 states to 25679 states and 36269 transitions. [2022-11-23 14:53:27,792 INFO L78 Accepts]: Start accepts. Automaton has 25679 states and 36269 transitions. Word has length 159 [2022-11-23 14:53:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 25679 states and 36269 transitions. [2022-11-23 14:53:27,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 14:53:27,794 INFO L276 IsEmpty]: Start isEmpty. Operand 25679 states and 36269 transitions. [2022-11-23 14:53:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 14:53:27,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:27,807 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:27,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:53:27,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 743786567, now seen corresponding path program 1 times [2022-11-23 14:53:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515260278] [2022-11-23 14:53:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:27,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-11-23 14:53:28,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:28,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515260278] [2022-11-23 14:53:28,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515260278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:28,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:28,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:53:28,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035176033] [2022-11-23 14:53:28,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:28,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:53:28,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:28,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:53:28,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:28,522 INFO L87 Difference]: Start difference. First operand 25679 states and 36269 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 14:53:31,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:31,060 INFO L93 Difference]: Finished difference Result 63785 states and 90134 transitions. [2022-11-23 14:53:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:53:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 171 [2022-11-23 14:53:31,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:31,234 INFO L225 Difference]: With dead ends: 63785 [2022-11-23 14:53:31,234 INFO L226 Difference]: Without dead ends: 38115 [2022-11-23 14:53:31,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:53:31,310 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 926 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2309 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:31,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 2309 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:53:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38115 states. [2022-11-23 14:53:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38115 to 38097. [2022-11-23 14:53:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38097 states, 26440 states have (on average 1.3359682299546143) internal successors, (35323), 26837 states have internal predecessors, (35323), 9102 states have call successors, (9102), 2573 states have call predecessors, (9102), 2554 states have return successors, (9268), 8946 states have call predecessors, (9268), 9100 states have call successors, (9268) [2022-11-23 14:53:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38097 states to 38097 states and 53693 transitions. [2022-11-23 14:53:33,787 INFO L78 Accepts]: Start accepts. Automaton has 38097 states and 53693 transitions. Word has length 171 [2022-11-23 14:53:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:33,787 INFO L495 AbstractCegarLoop]: Abstraction has 38097 states and 53693 transitions. [2022-11-23 14:53:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 14:53:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 38097 states and 53693 transitions. [2022-11-23 14:53:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 14:53:33,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:33,801 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:53:33,801 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash -456728945, now seen corresponding path program 1 times [2022-11-23 14:53:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:33,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413395345] [2022-11-23 14:53:33,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:33,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-23 14:53:36,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:36,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413395345] [2022-11-23 14:53:36,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413395345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:36,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:36,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:53:36,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564337942] [2022-11-23 14:53:36,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:36,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:53:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:53:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:53:36,191 INFO L87 Difference]: Start difference. First operand 38097 states and 53693 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 14:53:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:40,137 INFO L93 Difference]: Finished difference Result 88699 states and 125164 transitions. [2022-11-23 14:53:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:53:40,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 176 [2022-11-23 14:53:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:40,399 INFO L225 Difference]: With dead ends: 88699 [2022-11-23 14:53:40,399 INFO L226 Difference]: Without dead ends: 50611 [2022-11-23 14:53:40,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:53:40,502 INFO L413 NwaCegarLoop]: 1472 mSDtfsCounter, 978 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 5753 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:40,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 5753 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:53:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50611 states. [2022-11-23 14:53:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50611 to 50435. [2022-11-23 14:53:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50435 states, 35026 states have (on average 1.3346371267058756) internal successors, (46747), 35565 states have internal predecessors, (46747), 12032 states have call successors, (12032), 3377 states have call predecessors, (12032), 3376 states have return successors, (12282), 11852 states have call predecessors, (12282), 12030 states have call successors, (12282) [2022-11-23 14:53:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50435 states to 50435 states and 71061 transitions. [2022-11-23 14:53:43,300 INFO L78 Accepts]: Start accepts. Automaton has 50435 states and 71061 transitions. Word has length 176 [2022-11-23 14:53:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:43,301 INFO L495 AbstractCegarLoop]: Abstraction has 50435 states and 71061 transitions. [2022-11-23 14:53:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-23 14:53:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 50435 states and 71061 transitions. [2022-11-23 14:53:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-23 14:53:43,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:43,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:43,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:53:43,329 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1443783726, now seen corresponding path program 1 times [2022-11-23 14:53:43,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:43,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57223979] [2022-11-23 14:53:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:43,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-23 14:53:45,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:45,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57223979] [2022-11-23 14:53:45,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57223979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:45,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:53:45,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:53:45,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973476368] [2022-11-23 14:53:45,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:53:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:53:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:53:45,762 INFO L87 Difference]: Start difference. First operand 50435 states and 71061 transitions. Second operand has 6 states, 4 states have (on average 17.75) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:53:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:53:48,737 INFO L93 Difference]: Finished difference Result 101245 states and 142925 transitions. [2022-11-23 14:53:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:53:48,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 17.75) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 198 [2022-11-23 14:53:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:53:48,943 INFO L225 Difference]: With dead ends: 101245 [2022-11-23 14:53:48,943 INFO L226 Difference]: Without dead ends: 50531 [2022-11-23 14:53:49,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:53:49,079 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 3 mSDsluCounter, 3499 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4378 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:53:49,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4378 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:53:49,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50531 states. [2022-11-23 14:53:51,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50531 to 50531. [2022-11-23 14:53:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50531 states, 35122 states have (on average 1.3337224531632594) internal successors, (46843), 35661 states have internal predecessors, (46843), 12032 states have call successors, (12032), 3377 states have call predecessors, (12032), 3376 states have return successors, (12282), 11852 states have call predecessors, (12282), 12030 states have call successors, (12282) [2022-11-23 14:53:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50531 states to 50531 states and 71157 transitions. [2022-11-23 14:53:51,857 INFO L78 Accepts]: Start accepts. Automaton has 50531 states and 71157 transitions. Word has length 198 [2022-11-23 14:53:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:53:51,858 INFO L495 AbstractCegarLoop]: Abstraction has 50531 states and 71157 transitions. [2022-11-23 14:53:51,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 17.75) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-23 14:53:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 50531 states and 71157 transitions. [2022-11-23 14:53:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-23 14:53:51,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:53:51,882 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:53:51,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:53:51,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:53:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:53:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1561222710, now seen corresponding path program 1 times [2022-11-23 14:53:51,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:53:51,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289873858] [2022-11-23 14:53:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:51,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:53:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-23 14:53:54,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:53:54,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289873858] [2022-11-23 14:53:54,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289873858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:53:54,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380980750] [2022-11-23 14:53:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:53:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:53:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:53:54,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:53:54,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:53:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:53:56,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 7702 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 14:53:56,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:53:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-23 14:53:57,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:53:57,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380980750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:53:57,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:53:57,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-23 14:53:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073101848] [2022-11-23 14:53:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:53:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:53:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:53:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:53:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:53:57,200 INFO L87 Difference]: Start difference. First operand 50531 states and 71157 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:54:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:06,266 INFO L93 Difference]: Finished difference Result 84058 states and 120878 transitions. [2022-11-23 14:54:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 14:54:06,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 199 [2022-11-23 14:54:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:06,597 INFO L225 Difference]: With dead ends: 84058 [2022-11-23 14:54:06,597 INFO L226 Difference]: Without dead ends: 84055 [2022-11-23 14:54:06,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:54:06,632 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 2017 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 4308 SdHoareTripleChecker+Invalid, 6127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:06,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2200 Valid, 4308 Invalid, 6127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1004 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:54:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84055 states. [2022-11-23 14:54:09,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84055 to 79779. [2022-11-23 14:54:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79779 states, 55193 states have (on average 1.3321435689308427) internal successors, (73525), 56043 states have internal predecessors, (73525), 19251 states have call successors, (19251), 5131 states have call predecessors, (19251), 5334 states have return successors, (20957), 19264 states have call predecessors, (20957), 19249 states have call successors, (20957) [2022-11-23 14:54:10,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79779 states to 79779 states and 113733 transitions. [2022-11-23 14:54:10,204 INFO L78 Accepts]: Start accepts. Automaton has 79779 states and 113733 transitions. Word has length 199 [2022-11-23 14:54:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:54:10,204 INFO L495 AbstractCegarLoop]: Abstraction has 79779 states and 113733 transitions. [2022-11-23 14:54:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:54:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 79779 states and 113733 transitions. [2022-11-23 14:54:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-23 14:54:10,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:54:10,230 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:54:10,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:54:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:54:10,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:54:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:54:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 897181957, now seen corresponding path program 1 times [2022-11-23 14:54:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:54:10,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196632400] [2022-11-23 14:54:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:54:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:54:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:54:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-23 14:54:13,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:54:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196632400] [2022-11-23 14:54:13,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196632400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:54:13,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251095513] [2022-11-23 14:54:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:54:13,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:54:13,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:54:13,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:54:13,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08b738f2-b0ab-4426-b52e-06af2a77257f/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:54:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:54:15,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 7678 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 14:54:15,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:54:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-23 14:54:16,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:54:16,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251095513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:54:16,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:54:16,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2022-11-23 14:54:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60393203] [2022-11-23 14:54:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:54:16,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:54:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:54:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:54:16,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:54:16,178 INFO L87 Difference]: Start difference. First operand 79779 states and 113733 transitions. Second operand has 10 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-23 14:54:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:54:30,807 INFO L93 Difference]: Finished difference Result 202775 states and 297383 transitions. [2022-11-23 14:54:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:54:30,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 205 [2022-11-23 14:54:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:54:31,836 INFO L225 Difference]: With dead ends: 202775 [2022-11-23 14:54:31,836 INFO L226 Difference]: Without dead ends: 202772 [2022-11-23 14:54:31,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:54:31,897 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 2412 mSDsluCounter, 7468 mSDsCounter, 0 mSdLazyCounter, 9047 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 9041 SdHoareTripleChecker+Invalid, 10335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 9047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:54:31,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2652 Valid, 9041 Invalid, 10335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1288 Valid, 9047 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-23 14:54:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202772 states.