./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--scsi--fcoe--fcoe.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS --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 a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:52:04,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:04,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:04,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:04,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:04,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:04,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:04,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:05,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:05,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:05,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:05,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:05,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:05,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:05,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:05,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:05,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:05,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:05,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:05,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:05,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:05,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:05,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:05,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:05,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:05,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:05,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:05,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:05,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:05,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:05,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:05,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:05,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:05,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:05,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:05,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:05,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:05,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:05,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:05,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:05,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:05,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:52:05,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:05,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:05,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:05,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:05,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:05,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:05,076 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:05,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:05,076 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:05,076 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:52:05,077 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:05,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:05,077 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:52:05,077 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:52:05,078 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:05,078 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:52:05,078 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:52:05,078 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:52:05,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:05,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:52:05,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:05,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:05,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:05,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:05,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:05,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:05,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:05,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:05,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:05,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:05,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:05,082 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:52:05,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:05,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:05,083 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:52:05,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:52:05,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:05,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:05,084 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_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 [2022-11-19 06:52:05,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:05,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:05,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:05,407 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:05,408 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:05,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-19 06:52:05,481 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/data/b5dd0e2b6/c7f3a0f292cc4475a1cb185ad6adae97/FLAGe672c11db [2022-11-19 06:52:06,427 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:06,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-19 06:52:06,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/data/b5dd0e2b6/c7f3a0f292cc4475a1cb185ad6adae97/FLAGe672c11db [2022-11-19 06:52:06,847 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/data/b5dd0e2b6/c7f3a0f292cc4475a1cb185ad6adae97 [2022-11-19 06:52:06,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:06,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:06,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:06,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:06,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:06,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:06" (1/1) ... [2022-11-19 06:52:06,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2a7444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:06, skipping insertion in model container [2022-11-19 06:52:06,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:06" (1/1) ... [2022-11-19 06:52:06,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:07,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:10,497 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[413960,413973] [2022-11-19 06:52:10,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:10,642 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:11,190 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i[413960,413973] [2022-11-19 06:52:11,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:11,417 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:11,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11 WrapperNode [2022-11-19 06:52:11,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:11,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:11,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:11,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:11,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:11,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:11,746 INFO L138 Inliner]: procedures = 420, calls = 2205, calls flagged for inlining = 207, calls inlined = 186, statements flattened = 6275 [2022-11-19 06:52:11,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:11,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:11,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:11,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:11,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:11,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:11,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:11,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:11,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:12,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:12,074 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:12,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:12,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:12,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:12,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:12,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:12,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (1/1) ... [2022-11-19 06:52:12,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:12,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:12,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:12,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:12,251 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2022-11-19 06:52:12,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2022-11-19 06:52:12,252 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_get_wwn [2022-11-19 06:52:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_get_wwn [2022-11-19 06:52:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure fc_lport_bsg_request [2022-11-19 06:52:12,253 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_lport_bsg_request [2022-11-19 06:52:12,253 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 06:52:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_del [2022-11-19 06:52:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_del [2022-11-19 06:52:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-19 06:52:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-19 06:52:12,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:52:12,254 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:52:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-19 06:52:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-19 06:52:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 06:52:12,255 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 06:52:12,255 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_header_get [2022-11-19 06:52:12,256 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_header_get [2022-11-19 06:52:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:52:12,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:52:12,256 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev [2022-11-19 06:52:12,256 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev [2022-11-19 06:52:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_recv_flogi [2022-11-19 06:52:12,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_recv_flogi [2022-11-19 06:52:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_setlink [2022-11-19 06:52:12,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_setlink [2022-11-19 06:52:12,257 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_abort [2022-11-19 06:52:12,258 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_abort [2022-11-19 06:52:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-19 06:52:12,258 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-19 06:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_dev_from_skb [2022-11-19 06:52:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_dev_from_skb [2022-11-19 06:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-11-19 06:52:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-11-19 06:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_create [2022-11-19 06:52:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_create [2022-11-19 06:52:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_priv [2022-11-19 06:52:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_priv [2022-11-19 06:52:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2022-11-19 06:52:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2022-11-19 06:52:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_ok [2022-11-19 06:52:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_ok [2022-11-19 06:52:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:52:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:52:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2022-11-19 06:52:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2022-11-19 06:52:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2022-11-19 06:52:12,263 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2022-11-19 06:52:12,264 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_port_state [2022-11-19 06:52:12,264 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_port_state [2022-11-19 06:52:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure fc_release_transport [2022-11-19 06:52:12,265 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_release_transport [2022-11-19 06:52:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_reset [2022-11-19 06:52:12,265 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_reset [2022-11-19 06:52:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 06:52:12,266 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 06:52:12,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:52:12,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:52:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_speed_update [2022-11-19 06:52:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_speed_update [2022-11-19 06:52:12,267 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_xmit [2022-11-19 06:52:12,267 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_xmit [2022-11-19 06:52:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_logoff [2022-11-19 06:52:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_logoff [2022-11-19 06:52:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:52:12,268 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_get [2022-11-19 06:52:12,268 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_get [2022-11-19 06:52:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 06:52:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 06:52:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2022-11-19 06:52:12,269 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2022-11-19 06:52:12,269 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_alloc [2022-11-19 06:52:12,270 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_alloc [2022-11-19 06:52:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure is_fip_mode [2022-11-19 06:52:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure is_fip_mode [2022-11-19 06:52:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_check_wait_queue [2022-11-19 06:52:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_check_wait_queue [2022-11-19 06:52:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-19 06:52:12,271 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-19 06:52:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_login [2022-11-19 06:52:12,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_login [2022-11-19 06:52:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:52:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_done [2022-11-19 06:52:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_done [2022-11-19 06:52:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2022-11-19 06:52:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2022-11-19 06:52:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_rport_loss_tmo [2022-11-19 06:52:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_rport_loss_tmo [2022-11-19 06:52:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:52:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2022-11-19 06:52:12,276 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2022-11-19 06:52:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:52:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:52:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:52:12,277 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_wwn_from_mac [2022-11-19 06:52:12,277 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_wwn_from_mac [2022-11-19 06:52:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 06:52:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 06:52:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-19 06:52:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-19 06:52:12,278 INFO L130 BoogieDeclarations]: Found specification of procedure fc_attach_transport [2022-11-19 06:52:12,278 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_attach_transport [2022-11-19 06:52:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_lookup_port [2022-11-19 06:52:12,279 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_lookup_port [2022-11-19 06:52:12,279 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_getapp [2022-11-19 06:52:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_getapp [2022-11-19 06:52:12,280 INFO L130 BoogieDeclarations]: Found specification of procedure fc_rport_terminate_io [2022-11-19 06:52:12,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_rport_terminate_io [2022-11-19 06:52:12,281 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-19 06:52:12,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-19 06:52:12,284 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2022-11-19 06:52:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2022-11-19 06:52:12,285 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_free [2022-11-19 06:52:12,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_free [2022-11-19 06:52:12,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 06:52:12,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 06:52:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-19 06:52:12,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-19 06:52:12,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:52:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_ieee_getapp_mask [2022-11-19 06:52:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_ieee_getapp_mask [2022-11-19 06:52:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_mfs [2022-11-19 06:52:12,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_mfs [2022-11-19 06:52:12,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:52:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:52:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-19 06:52:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-19 06:52:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:52:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:52:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_up [2022-11-19 06:52:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_up [2022-11-19 06:52:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure lport_priv [2022-11-19 06:52:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure lport_priv [2022-11-19 06:52:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev_features_change [2022-11-19 06:52:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev_features_change [2022-11-19 06:52:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_disable [2022-11-19 06:52:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_disable [2022-11-19 06:52:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:52:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:52:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_set_state [2022-11-19 06:52:12,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_set_state [2022-11-19 06:52:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_clean_pending_queue [2022-11-19 06:52:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_clean_pending_queue [2022-11-19 06:52:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2022-11-19 06:52:12,300 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2022-11-19 06:52:12,300 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_enabled [2022-11-19 06:52:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_enabled [2022-11-19 06:52:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_down [2022-11-19 06:52:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_down [2022-11-19 06:52:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-19 06:52:12,301 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-19 06:52:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-19 06:52:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-19 06:52:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2022-11-19 06:52:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2022-11-19 06:52:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 06:52:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 06:52:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-19 06:52:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-19 06:52:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_op [2022-11-19 06:52:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_op [2022-11-19 06:52:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_get_lesb [2022-11-19 06:52:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_get_lesb [2022-11-19 06:52:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:52:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:52:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:52:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:52:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure fc_elsct_send [2022-11-19 06:52:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_elsct_send [2022-11-19 06:52:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_vlan_id [2022-11-19 06:52:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_vlan_id [2022-11-19 06:52:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure fc_queuecommand [2022-11-19 06:52:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_queuecommand [2022-11-19 06:52:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 06:52:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 06:52:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 06:52:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 06:52:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 06:52:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-19 06:52:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-19 06:52:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_17 [2022-11-19 06:52:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_17 [2022-11-19 06:52:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 06:52:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 06:52:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_speed [2022-11-19 06:52:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_speed [2022-11-19 06:52:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2022-11-19 06:52:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2022-11-19 06:52:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2022-11-19 06:52:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2022-11-19 06:52:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 06:52:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 06:52:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:52:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:52:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_destroy [2022-11-19 06:52:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_destroy [2022-11-19 06:52:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:52:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:52:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:52:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:52:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_priv [2022-11-19 06:52:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_priv [2022-11-19 06:52:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_del [2022-11-19 06:52:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_del [2022-11-19 06:52:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy [2022-11-19 06:52:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy [2022-11-19 06:52:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 06:52:12,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 06:52:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-19 06:52:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-19 06:52:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_device_reset [2022-11-19 06:52:12,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_device_reset [2022-11-19 06:52:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:52:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 06:52:12,313 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 06:52:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwpn [2022-11-19 06:52:12,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwpn [2022-11-19 06:52:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:52:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-19 06:52:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-19 06:52:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-19 06:52:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-19 06:52:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_destroy [2022-11-19 06:52:12,314 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_destroy [2022-11-19 06:52:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2022-11-19 06:52:12,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2022-11-19 06:52:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 06:52:12,315 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 06:52:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2022-11-19 06:52:12,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2022-11-19 06:52:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:52:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-19 06:52:12,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-19 06:52:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-19 06:52:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-19 06:52:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure dev_add_pack [2022-11-19 06:52:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_add_pack [2022-11-19 06:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwnn [2022-11-19 06:52:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwnn [2022-11-19 06:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-19 06:52:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-19 06:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-19 06:52:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-19 06:52:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_stats [2022-11-19 06:52:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_stats [2022-11-19 06:52:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_enable [2022-11-19 06:52:12,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_enable [2022-11-19 06:52:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure ntoh24 [2022-11-19 06:52:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ntoh24 [2022-11-19 06:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_add [2022-11-19 06:52:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_add [2022-11-19 06:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-19 06:52:12,326 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-19 06:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-19 06:52:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-19 06:52:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2022-11-19 06:52:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2022-11-19 06:52:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-11-19 06:52:12,327 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-11-19 06:52:12,327 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2022-11-19 06:52:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2022-11-19 06:52:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-19 06:52:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-19 06:52:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:52:12,328 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_create [2022-11-19 06:52:12,328 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_create [2022-11-19 06:52:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_delete [2022-11-19 06:52:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_delete [2022-11-19 06:52:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:52:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:52:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2022-11-19 06:52:12,329 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2022-11-19 06:52:12,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 06:52:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 06:52:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-19 06:52:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-19 06:52:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-19 06:52:12,330 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-19 06:52:12,330 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2022-11-19 06:52:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2022-11-19 06:52:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_port_send [2022-11-19 06:52:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_port_send [2022-11-19 06:52:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_host_reset [2022-11-19 06:52:12,331 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_host_reset [2022-11-19 06:52:12,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2022-11-19 06:52:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2022-11-19 06:52:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-19 06:52:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-19 06:52:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2022-11-19 06:52:12,332 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2022-11-19 06:52:12,332 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2022-11-19 06:52:12,333 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2022-11-19 06:52:12,333 INFO L130 BoogieDeclarations]: Found specification of procedure fc_slave_alloc [2022-11-19 06:52:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_slave_alloc [2022-11-19 06:52:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-19 06:52:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-19 06:52:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_elsct_send [2022-11-19 06:52:12,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_elsct_send [2022-11-19 06:52:12,404 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_real_dev [2022-11-19 06:52:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_real_dev [2022-11-19 06:52:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_begin [2022-11-19 06:52:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_begin [2022-11-19 06:52:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-19 06:52:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-19 06:52:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2022-11-19 06:52:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2022-11-19 06:52:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_remove_pack [2022-11-19 06:52:12,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_remove_pack [2022-11-19 06:52:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:52:12,405 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-19 06:52:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-19 06:52:13,505 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:13,510 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:14,121 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:52:18,737 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:21,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:21,724 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 06:52:21,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:21 BoogieIcfgContainer [2022-11-19 06:52:21,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:21,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:21,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:21,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:21,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:06" (1/3) ... [2022-11-19 06:52:21,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6747317f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:21, skipping insertion in model container [2022-11-19 06:52:21,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:11" (2/3) ... [2022-11-19 06:52:21,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6747317f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:21, skipping insertion in model container [2022-11-19 06:52:21,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:21" (3/3) ... [2022-11-19 06:52:21,742 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-19 06:52:21,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:21,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:52:21,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:21,930 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;@19bf266b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:21,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:52:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 1810 states, 1094 states have (on average 1.3491773308957953) internal successors, (1476), 1153 states have internal predecessors, (1476), 567 states have call successors, (567), 148 states have call predecessors, (567), 147 states have return successors, (554), 544 states have call predecessors, (554), 554 states have call successors, (554) [2022-11-19 06:52:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-19 06:52:21,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:21,996 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:21,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash -520354441, now seen corresponding path program 1 times [2022-11-19 06:52:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:22,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100299775] [2022-11-19 06:52:22,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:22,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-19 06:52:23,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:23,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100299775] [2022-11-19 06:52:23,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100299775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:23,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:23,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379229696] [2022-11-19 06:52:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:23,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:23,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:23,809 INFO L87 Difference]: Start difference. First operand has 1810 states, 1094 states have (on average 1.3491773308957953) internal successors, (1476), 1153 states have internal predecessors, (1476), 567 states have call successors, (567), 148 states have call predecessors, (567), 147 states have return successors, (554), 544 states have call predecessors, (554), 554 states have call successors, (554) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-19 06:52:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:27,644 INFO L93 Difference]: Finished difference Result 5114 states and 7428 transitions. [2022-11-19 06:52:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:27,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 327 [2022-11-19 06:52:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:27,703 INFO L225 Difference]: With dead ends: 5114 [2022-11-19 06:52:27,703 INFO L226 Difference]: Without dead ends: 3331 [2022-11-19 06:52:27,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:27,722 INFO L413 NwaCegarLoop]: 2957 mSDtfsCounter, 2246 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 5197 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:27,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 5197 Invalid, 620 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 06:52:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2022-11-19 06:52:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 3326. [2022-11-19 06:52:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 2035 states have (on average 1.3444717444717444) internal successors, (2736), 2120 states have internal predecessors, (2736), 1011 states have call successors, (1011), 280 states have call predecessors, (1011), 279 states have return successors, (1036), 989 states have call predecessors, (1036), 1009 states have call successors, (1036) [2022-11-19 06:52:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4783 transitions. [2022-11-19 06:52:28,061 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4783 transitions. Word has length 327 [2022-11-19 06:52:28,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:28,069 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4783 transitions. [2022-11-19 06:52:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-19 06:52:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4783 transitions. [2022-11-19 06:52:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-19 06:52:28,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:28,084 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:28,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:52:28,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:28,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:28,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1045505476, now seen corresponding path program 1 times [2022-11-19 06:52:28,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:28,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112873222] [2022-11-19 06:52:28,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:28,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-19 06:52:29,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:29,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112873222] [2022-11-19 06:52:29,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112873222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:29,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:29,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:29,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039178560] [2022-11-19 06:52:29,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:29,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:29,056 INFO L87 Difference]: Start difference. First operand 3326 states and 4783 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-19 06:52:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:32,320 INFO L93 Difference]: Finished difference Result 9786 states and 14055 transitions. [2022-11-19 06:52:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 357 [2022-11-19 06:52:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:32,373 INFO L225 Difference]: With dead ends: 9786 [2022-11-19 06:52:32,373 INFO L226 Difference]: Without dead ends: 6525 [2022-11-19 06:52:32,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:32,392 INFO L413 NwaCegarLoop]: 2790 mSDtfsCounter, 2506 mSDsluCounter, 2172 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2506 SdHoareTripleChecker+Valid, 4962 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:32,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2506 Valid, 4962 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 06:52:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2022-11-19 06:52:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 6510. [2022-11-19 06:52:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6510 states, 3984 states have (on average 1.3458835341365463) internal successors, (5362), 4156 states have internal predecessors, (5362), 1969 states have call successors, (1969), 557 states have call predecessors, (1969), 556 states have return successors, (2019), 1924 states have call predecessors, (2019), 1967 states have call successors, (2019) [2022-11-19 06:52:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6510 states to 6510 states and 9350 transitions. [2022-11-19 06:52:32,945 INFO L78 Accepts]: Start accepts. Automaton has 6510 states and 9350 transitions. Word has length 357 [2022-11-19 06:52:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:32,951 INFO L495 AbstractCegarLoop]: Abstraction has 6510 states and 9350 transitions. [2022-11-19 06:52:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-19 06:52:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6510 states and 9350 transitions. [2022-11-19 06:52:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-19 06:52:32,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:32,969 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:52:32,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:32,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1511462578, now seen corresponding path program 1 times [2022-11-19 06:52:32,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:32,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368852414] [2022-11-19 06:52:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:32,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:34,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-19 06:52:34,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368852414] [2022-11-19 06:52:34,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368852414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:34,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969133283] [2022-11-19 06:52:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:34,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:34,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:34,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:34,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:52:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:36,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 6106 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:52:36,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-19 06:52:37,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:37,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969133283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:52:37,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 06:52:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696891626] [2022-11-19 06:52:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:52:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:52:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:52:37,087 INFO L87 Difference]: Start difference. First operand 6510 states and 9350 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 06:52:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:46,069 INFO L93 Difference]: Finished difference Result 16331 states and 23198 transitions. [2022-11-19 06:52:46,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:52:46,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 441 [2022-11-19 06:52:46,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:46,136 INFO L225 Difference]: With dead ends: 16331 [2022-11-19 06:52:46,136 INFO L226 Difference]: Without dead ends: 9886 [2022-11-19 06:52:46,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-19 06:52:46,167 INFO L413 NwaCegarLoop]: 3020 mSDtfsCounter, 1485 mSDsluCounter, 5179 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 8199 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:46,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 8199 Invalid, 2706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 06:52:46,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9886 states. [2022-11-19 06:52:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9886 to 9882. [2022-11-19 06:52:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9882 states, 5914 states have (on average 1.3155224890091308) internal successors, (7780), 6152 states have internal predecessors, (7780), 3007 states have call successors, (3007), 961 states have call predecessors, (3007), 960 states have return successors, (3091), 2956 states have call predecessors, (3091), 3005 states have call successors, (3091) [2022-11-19 06:52:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9882 states to 9882 states and 13878 transitions. [2022-11-19 06:52:46,721 INFO L78 Accepts]: Start accepts. Automaton has 9882 states and 13878 transitions. Word has length 441 [2022-11-19 06:52:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:46,723 INFO L495 AbstractCegarLoop]: Abstraction has 9882 states and 13878 transitions. [2022-11-19 06:52:46,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 06:52:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9882 states and 13878 transitions. [2022-11-19 06:52:46,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-19 06:52:46,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:46,739 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:46,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:46,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:46,957 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:46,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash -935379184, now seen corresponding path program 1 times [2022-11-19 06:52:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:46,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530970032] [2022-11-19 06:52:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:46,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-19 06:52:49,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530970032] [2022-11-19 06:52:49,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530970032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:49,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:49,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:52:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969800554] [2022-11-19 06:52:49,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:49,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:52:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:52:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:52:49,006 INFO L87 Difference]: Start difference. First operand 9882 states and 13878 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-19 06:53:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:19,012 INFO L93 Difference]: Finished difference Result 35404 states and 51333 transitions. [2022-11-19 06:53:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:53:19,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 422 [2022-11-19 06:53:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:19,191 INFO L225 Difference]: With dead ends: 35404 [2022-11-19 06:53:19,191 INFO L226 Difference]: Without dead ends: 25587 [2022-11-19 06:53:19,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:53:19,251 INFO L413 NwaCegarLoop]: 2281 mSDtfsCounter, 4680 mSDsluCounter, 6883 mSDsCounter, 0 mSdLazyCounter, 18368 mSolverCounterSat, 3921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 9164 SdHoareTripleChecker+Invalid, 22289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3921 IncrementalHoareTripleChecker+Valid, 18368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:19,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 9164 Invalid, 22289 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3921 Valid, 18368 Invalid, 0 Unknown, 0 Unchecked, 28.2s Time] [2022-11-19 06:53:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25587 states. [2022-11-19 06:53:20,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25587 to 24972. [2022-11-19 06:53:20,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24972 states, 14810 states have (on average 1.3064145847400406) internal successors, (19348), 15440 states have internal predecessors, (19348), 7695 states have call successors, (7695), 2311 states have call predecessors, (7695), 2466 states have return successors, (9147), 7724 states have call predecessors, (9147), 7693 states have call successors, (9147) [2022-11-19 06:53:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24972 states to 24972 states and 36190 transitions. [2022-11-19 06:53:21,054 INFO L78 Accepts]: Start accepts. Automaton has 24972 states and 36190 transitions. Word has length 422 [2022-11-19 06:53:21,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:21,055 INFO L495 AbstractCegarLoop]: Abstraction has 24972 states and 36190 transitions. [2022-11-19 06:53:21,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-19 06:53:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 24972 states and 36190 transitions. [2022-11-19 06:53:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-19 06:53:21,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:21,073 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:53:21,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash 518555104, now seen corresponding path program 1 times [2022-11-19 06:53:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:21,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373857105] [2022-11-19 06:53:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:21,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-19 06:53:22,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:22,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373857105] [2022-11-19 06:53:22,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373857105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:53:22,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473264212] [2022-11-19 06:53:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:22,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:22,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:22,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:22,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:53:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:24,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 6109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 06:53:24,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-19 06:53:24,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:53:24,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473264212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:24,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:53:24,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 06:53:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510946309] [2022-11-19 06:53:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:24,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:53:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:24,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:53:24,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:53:24,980 INFO L87 Difference]: Start difference. First operand 24972 states and 36190 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 06:53:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:33,477 INFO L93 Difference]: Finished difference Result 61227 states and 88902 transitions. [2022-11-19 06:53:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:53:33,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 443 [2022-11-19 06:53:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:33,727 INFO L225 Difference]: With dead ends: 61227 [2022-11-19 06:53:33,727 INFO L226 Difference]: Without dead ends: 36320 [2022-11-19 06:53:33,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-19 06:53:33,835 INFO L413 NwaCegarLoop]: 3007 mSDtfsCounter, 1495 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 6450 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 6450 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-19 06:53:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36320 states. [2022-11-19 06:53:35,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36320 to 36316. [2022-11-19 06:53:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36316 states, 21312 states have (on average 1.2904466966966968) internal successors, (27502), 22176 states have internal predecessors, (27502), 11233 states have call successors, (11233), 3511 states have call predecessors, (11233), 3770 states have return successors, (13417), 11336 states have call predecessors, (13417), 11231 states have call successors, (13417) [2022-11-19 06:53:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36316 states to 36316 states and 52152 transitions. [2022-11-19 06:53:36,409 INFO L78 Accepts]: Start accepts. Automaton has 36316 states and 52152 transitions. Word has length 443 [2022-11-19 06:53:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:36,410 INFO L495 AbstractCegarLoop]: Abstraction has 36316 states and 52152 transitions. [2022-11-19 06:53:36,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (64), 4 states have call predecessors, (64), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 06:53:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 36316 states and 52152 transitions. [2022-11-19 06:53:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-19 06:53:36,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:36,431 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:36,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:36,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:36,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:36,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:36,651 INFO L85 PathProgramCache]: Analyzing trace with hash 97219448, now seen corresponding path program 1 times [2022-11-19 06:53:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:36,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634013807] [2022-11-19 06:53:36,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:36,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-19 06:53:38,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:38,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634013807] [2022-11-19 06:53:38,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634013807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:38,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:38,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:53:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110333974] [2022-11-19 06:53:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:53:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:38,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:53:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:53:38,650 INFO L87 Difference]: Start difference. First operand 36316 states and 52152 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-19 06:54:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:01,749 INFO L93 Difference]: Finished difference Result 73194 states and 105321 transitions. [2022-11-19 06:54:01,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:54:01,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 423 [2022-11-19 06:54:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:02,066 INFO L225 Difference]: With dead ends: 73194 [2022-11-19 06:54:02,066 INFO L226 Difference]: Without dead ends: 36943 [2022-11-19 06:54:02,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:54:02,198 INFO L413 NwaCegarLoop]: 1676 mSDtfsCounter, 5228 mSDsluCounter, 5296 mSDsCounter, 0 mSdLazyCounter, 16396 mSolverCounterSat, 4147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5836 SdHoareTripleChecker+Valid, 6972 SdHoareTripleChecker+Invalid, 20543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4147 IncrementalHoareTripleChecker+Valid, 16396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:02,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5836 Valid, 6972 Invalid, 20543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4147 Valid, 16396 Invalid, 0 Unknown, 0 Unchecked, 20.8s Time] [2022-11-19 06:54:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36943 states. [2022-11-19 06:54:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36943 to 36256. [2022-11-19 06:54:04,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36256 states, 21276 states have (on average 1.2899981199473585) internal successors, (27446), 22132 states have internal predecessors, (27446), 11213 states have call successors, (11213), 3507 states have call predecessors, (11213), 3766 states have return successors, (13341), 11316 states have call predecessors, (13341), 11211 states have call successors, (13341) [2022-11-19 06:54:04,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36256 states to 36256 states and 52000 transitions. [2022-11-19 06:54:04,401 INFO L78 Accepts]: Start accepts. Automaton has 36256 states and 52000 transitions. Word has length 423 [2022-11-19 06:54:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:04,402 INFO L495 AbstractCegarLoop]: Abstraction has 36256 states and 52000 transitions. [2022-11-19 06:54:04,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-19 06:54:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 36256 states and 52000 transitions. [2022-11-19 06:54:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-19 06:54:04,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:04,426 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:04,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:54:04,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:04,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:04,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1729540239, now seen corresponding path program 1 times [2022-11-19 06:54:04,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:04,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630052618] [2022-11-19 06:54:04,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:04,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-19 06:54:06,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:06,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630052618] [2022-11-19 06:54:06,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630052618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:06,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:06,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:54:06,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861833580] [2022-11-19 06:54:06,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:06,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:54:06,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:06,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:54:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:54:06,166 INFO L87 Difference]: Start difference. First operand 36256 states and 52000 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-19 06:54:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:31,232 INFO L93 Difference]: Finished difference Result 69651 states and 100286 transitions. [2022-11-19 06:54:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:54:31,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) Word has length 421 [2022-11-19 06:54:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:31,382 INFO L225 Difference]: With dead ends: 69651 [2022-11-19 06:54:31,382 INFO L226 Difference]: Without dead ends: 33436 [2022-11-19 06:54:31,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:54:31,487 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 4922 mSDsluCounter, 6024 mSDsCounter, 0 mSdLazyCounter, 17543 mSolverCounterSat, 3974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5527 SdHoareTripleChecker+Valid, 7968 SdHoareTripleChecker+Invalid, 21517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3974 IncrementalHoareTripleChecker+Valid, 17543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:31,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5527 Valid, 7968 Invalid, 21517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3974 Valid, 17543 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2022-11-19 06:54:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33436 states. [2022-11-19 06:54:33,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33436 to 32790. [2022-11-19 06:54:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32790 states, 19298 states have (on average 1.2942273810757592) internal successors, (24976), 20086 states have internal predecessors, (24976), 10137 states have call successors, (10137), 3095 states have call predecessors, (10137), 3354 states have return successors, (12111), 10252 states have call predecessors, (12111), 10135 states have call successors, (12111) [2022-11-19 06:54:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32790 states to 32790 states and 47224 transitions. [2022-11-19 06:54:33,220 INFO L78 Accepts]: Start accepts. Automaton has 32790 states and 47224 transitions. Word has length 421 [2022-11-19 06:54:33,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:33,221 INFO L495 AbstractCegarLoop]: Abstraction has 32790 states and 47224 transitions. [2022-11-19 06:54:33,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 4 states have call successors, (58), 4 states have call predecessors, (58), 3 states have return successors, (54), 5 states have call predecessors, (54), 4 states have call successors, (54) [2022-11-19 06:54:33,222 INFO L276 IsEmpty]: Start isEmpty. Operand 32790 states and 47224 transitions. [2022-11-19 06:54:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-19 06:54:33,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:33,237 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:33,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:54:33,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash -53287450, now seen corresponding path program 1 times [2022-11-19 06:54:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:33,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398038792] [2022-11-19 06:54:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-11-19 06:54:33,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:33,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398038792] [2022-11-19 06:54:33,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398038792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:33,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:33,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:54:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241108651] [2022-11-19 06:54:33,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:34,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:34,002 INFO L87 Difference]: Start difference. First operand 32790 states and 47224 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 06:54:38,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:38,972 INFO L93 Difference]: Finished difference Result 95535 states and 137380 transitions. [2022-11-19 06:54:38,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:54:38,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 437 [2022-11-19 06:54:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:39,387 INFO L225 Difference]: With dead ends: 95535 [2022-11-19 06:54:39,387 INFO L226 Difference]: Without dead ends: 62810 [2022-11-19 06:54:39,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:39,496 INFO L413 NwaCegarLoop]: 2802 mSDtfsCounter, 2410 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2410 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:39,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2410 Valid, 4956 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 06:54:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62810 states. [2022-11-19 06:54:42,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62810 to 62793. [2022-11-19 06:54:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62793 states, 36877 states have (on average 1.2916451989044662) internal successors, (47632), 38403 states have internal predecessors, (47632), 19352 states have call successors, (19352), 6044 states have call predecessors, (19352), 6563 states have return successors, (23242), 19593 states have call predecessors, (23242), 19350 states have call successors, (23242) [2022-11-19 06:54:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62793 states to 62793 states and 90226 transitions. [2022-11-19 06:54:43,171 INFO L78 Accepts]: Start accepts. Automaton has 62793 states and 90226 transitions. Word has length 437 [2022-11-19 06:54:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:43,172 INFO L495 AbstractCegarLoop]: Abstraction has 62793 states and 90226 transitions. [2022-11-19 06:54:43,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-19 06:54:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 62793 states and 90226 transitions. [2022-11-19 06:54:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-19 06:54:43,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:43,191 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:54:43,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:43,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash 757426724, now seen corresponding path program 1 times [2022-11-19 06:54:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:43,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472081239] [2022-11-19 06:54:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2022-11-19 06:54:43,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:43,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472081239] [2022-11-19 06:54:43,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472081239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:54:43,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765914831] [2022-11-19 06:54:43,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:43,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:43,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:43,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:54:43,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fe7036-c1ba-4bc0-993c-5001347d889d/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:54:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:46,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 6429 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:54:46,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:54:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1768 trivial. 0 not checked. [2022-11-19 06:54:46,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:54:46,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765914831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:46,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:54:46,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-19 06:54:46,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588467411] [2022-11-19 06:54:46,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:46,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:46,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:54:46,503 INFO L87 Difference]: Start difference. First operand 62793 states and 90226 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-19 06:54:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:54,318 INFO L93 Difference]: Finished difference Result 187408 states and 269098 transitions. [2022-11-19 06:54:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:54:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 476 [2022-11-19 06:54:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted.