./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/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_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 00:31:23,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:31:23,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:31:23,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:31:23,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:31:23,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:31:23,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:31:23,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:31:23,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:31:23,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:31:23,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:31:23,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:31:23,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:31:23,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:31:23,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:31:23,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:31:23,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:31:23,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:31:23,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:31:23,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:31:23,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:31:23,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:31:23,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:31:23,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:31:23,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:31:23,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:31:23,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:31:23,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:31:23,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:31:23,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:31:23,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:31:23,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:31:23,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:31:23,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:31:23,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:31:23,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:31:23,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:31:23,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:31:23,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:31:23,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:31:23,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:31:23,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 00:31:23,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:31:23,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:31:23,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:31:23,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:31:23,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:31:23,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:31:23,798 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:31:23,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:31:23,799 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:31:23,799 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:31:23,799 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:31:23,800 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:31:23,800 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:31:23,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:31:23,800 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:31:23,800 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:31:23,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:31:23,801 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:31:23,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:31:23,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:31:23,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:31:23,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:31:23,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:31:23,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:31:23,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:31:23,803 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:31:23,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:31:23,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:31:23,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:31:23,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:31:23,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:31:23,805 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:31:23,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:31:23,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:31:23,805 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:31:23,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:31:23,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:31:23,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:31:23,806 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_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3ff87c3e5fb8bea0460b71e9b9f7b5386599503dd506c0803db0e63f978b184 [2022-11-22 00:31:24,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:31:24,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:31:24,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:31:24,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:31:24,075 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:31:24,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/../../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 [2022-11-22 00:31:27,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:31:27,943 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:31:27,943 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/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 [2022-11-22 00:31:28,012 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/data/6553cae5f/9bd864acbe9a4395816016e8e0251e9b/FLAGe5fbbf941 [2022-11-22 00:31:28,034 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/data/6553cae5f/9bd864acbe9a4395816016e8e0251e9b [2022-11-22 00:31:28,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:31:28,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:31:28,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:31:28,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:31:28,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:31:28,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:31:28" (1/1) ... [2022-11-22 00:31:28,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec76652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:28, skipping insertion in model container [2022-11-22 00:31:28,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:31:28" (1/1) ... [2022-11-22 00:31:28,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:31:28,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:31:31,765 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/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] [2022-11-22 00:31:31,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:31:31,918 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:31:32,515 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/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] [2022-11-22 00:31:32,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:31:32,752 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:31:32,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32 WrapperNode [2022-11-22 00:31:32,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:31:32,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:31:32,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:31:32,754 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:31:32,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:32,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,127 INFO L138 Inliner]: procedures = 420, calls = 2181, calls flagged for inlining = 207, calls inlined = 186, statements flattened = 6321 [2022-11-22 00:31:33,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:31:33,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:31:33,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:31:33,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:31:33,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:31:33,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:31:33,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:31:33,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:31:33,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (1/1) ... [2022-11-22 00:31:33,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:31:33,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:33,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:31:33,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:31:33,736 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2022-11-22 00:31:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2022-11-22 00:31:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_get_wwn [2022-11-22 00:31:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_get_wwn [2022-11-22 00:31:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure fc_lport_bsg_request [2022-11-22 00:31:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_lport_bsg_request [2022-11-22 00:31:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-22 00:31:33,737 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_del [2022-11-22 00:31:33,737 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_del [2022-11-22 00:31:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-22 00:31:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-22 00:31:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 00:31:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 00:31:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-22 00:31:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-22 00:31:33,738 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-22 00:31:33,738 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-22 00:31:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_header_get [2022-11-22 00:31:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_header_get [2022-11-22 00:31:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 00:31:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 00:31:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev [2022-11-22 00:31:33,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev [2022-11-22 00:31:33,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_recv_flogi [2022-11-22 00:31:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_recv_flogi [2022-11-22 00:31:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_setlink [2022-11-22 00:31:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_setlink [2022-11-22 00:31:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_abort [2022-11-22 00:31:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_abort [2022-11-22 00:31:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-22 00:31:33,740 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-22 00:31:33,740 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_dev_from_skb [2022-11-22 00:31:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_dev_from_skb [2022-11-22 00:31:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-11-22 00:31:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-11-22 00:31:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_create [2022-11-22 00:31:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_create [2022-11-22 00:31:33,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_priv [2022-11-22 00:31:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_priv [2022-11-22 00:31:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_sub [2022-11-22 00:31:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_sub [2022-11-22 00:31:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_ok [2022-11-22 00:31:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_ok [2022-11-22 00:31:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 00:31:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 00:31:33,742 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2022-11-22 00:31:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2022-11-22 00:31:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2022-11-22 00:31:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2022-11-22 00:31:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_port_state [2022-11-22 00:31:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_port_state [2022-11-22 00:31:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure fc_release_transport [2022-11-22 00:31:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_release_transport [2022-11-22 00:31:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_reset [2022-11-22 00:31:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_reset [2022-11-22 00:31:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 00:31:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 00:31:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 00:31:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 00:31:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_link_speed_update [2022-11-22 00:31:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_link_speed_update [2022-11-22 00:31:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_xmit [2022-11-22 00:31:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_xmit [2022-11-22 00:31:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_logoff [2022-11-22 00:31:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_logoff [2022-11-22 00:31:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:31:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_get [2022-11-22 00:31:33,753 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_get [2022-11-22 00:31:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-22 00:31:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-22 00:31:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2022-11-22 00:31:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2022-11-22 00:31:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_alloc [2022-11-22 00:31:33,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_alloc [2022-11-22 00:31:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure is_fip_mode [2022-11-22 00:31:33,755 INFO L138 BoogieDeclarations]: Found implementation of procedure is_fip_mode [2022-11-22 00:31:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_check_wait_queue [2022-11-22 00:31:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_check_wait_queue [2022-11-22 00:31:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-22 00:31:33,756 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-22 00:31:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure fc_fabric_login [2022-11-22 00:31:33,757 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_fabric_login [2022-11-22 00:31:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 00:31:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_done [2022-11-22 00:31:33,757 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_done [2022-11-22 00:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2022-11-22 00:31:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2022-11-22 00:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_rport_loss_tmo [2022-11-22 00:31:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_rport_loss_tmo [2022-11-22 00:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 00:31:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2022-11-22 00:31:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2022-11-22 00:31:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:31:33,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 00:31:33,759 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 00:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_wwn_from_mac [2022-11-22 00:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_wwn_from_mac [2022-11-22 00:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-22 00:31:33,760 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-22 00:31:33,760 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-22 00:31:33,761 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-22 00:31:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure fc_attach_transport [2022-11-22 00:31:33,761 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_attach_transport [2022-11-22 00:31:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_hostlist_lookup_port [2022-11-22 00:31:33,761 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_hostlist_lookup_port [2022-11-22 00:31:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_getapp [2022-11-22 00:31:33,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_getapp [2022-11-22 00:31:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure fc_rport_terminate_io [2022-11-22 00:31:33,762 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_rport_terminate_io [2022-11-22 00:31:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-22 00:31:33,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-22 00:31:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2022-11-22 00:31:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2022-11-22 00:31:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure fc_exch_mgr_free [2022-11-22 00:31:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_exch_mgr_free [2022-11-22 00:31:33,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 00:31:33,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 00:31:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-22 00:31:33,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-22 00:31:33,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:31:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure dcb_ieee_getapp_mask [2022-11-22 00:31:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure dcb_ieee_getapp_mask [2022-11-22 00:31:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:31:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_mfs [2022-11-22 00:31:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_mfs [2022-11-22 00:31:33,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:31:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 00:31:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-22 00:31:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-22 00:31:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:31:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 00:31:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_up [2022-11-22 00:31:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_up [2022-11-22 00:31:33,775 INFO L130 BoogieDeclarations]: Found specification of procedure lport_priv [2022-11-22 00:31:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lport_priv [2022-11-22 00:31:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_netdev_features_change [2022-11-22 00:31:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_netdev_features_change [2022-11-22 00:31:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_disable [2022-11-22 00:31:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_disable [2022-11-22 00:31:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 00:31:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 00:31:33,776 INFO L130 BoogieDeclarations]: Found specification of procedure fc_vport_set_state [2022-11-22 00:31:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_vport_set_state [2022-11-22 00:31:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_clean_pending_queue [2022-11-22 00:31:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_clean_pending_queue [2022-11-22 00:31:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_net [2022-11-22 00:31:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_net [2022-11-22 00:31:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_enabled [2022-11-22 00:31:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_enabled [2022-11-22 00:31:33,777 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_link_down [2022-11-22 00:31:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_link_down [2022-11-22 00:31:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-22 00:31:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-22 00:31:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-22 00:31:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-22 00:31:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:31:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:31:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hdr [2022-11-22 00:31:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hdr [2022-11-22 00:31:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 00:31:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 00:31:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-22 00:31:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-22 00:31:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure fc_frame_payload_op [2022-11-22 00:31:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_frame_payload_op [2022-11-22 00:31:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_get_lesb [2022-11-22 00:31:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_get_lesb [2022-11-22 00:31:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 00:31:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 00:31:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 00:31:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 00:31:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure fc_elsct_send [2022-11-22 00:31:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_elsct_send [2022-11-22 00:31:33,780 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_vlan_id [2022-11-22 00:31:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_vlan_id [2022-11-22 00:31:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure fc_queuecommand [2022-11-22 00:31:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_queuecommand [2022-11-22 00:31:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 00:31:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 00:31:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-22 00:31:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-22 00:31:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 00:31:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-22 00:31:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-22 00:31:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_17 [2022-11-22 00:31:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_17 [2022-11-22 00:31:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 00:31:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 00:31:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_speed [2022-11-22 00:31:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_speed [2022-11-22 00:31:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_head_init [2022-11-22 00:31:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_head_init [2022-11-22 00:31:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2022-11-22 00:31:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2022-11-22 00:31:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 00:31:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 00:31:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 00:31:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 00:31:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_destroy [2022-11-22 00:31:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_destroy [2022-11-22 00:31:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 00:31:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 00:31:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 00:31:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 00:31:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_priv [2022-11-22 00:31:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_priv [2022-11-22 00:31:33,787 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_del [2022-11-22 00:31:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_del [2022-11-22 00:31:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy [2022-11-22 00:31:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy [2022-11-22 00:31:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-22 00:31:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-22 00:31:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2022-11-22 00:31:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2022-11-22 00:31:33,788 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_device_reset [2022-11-22 00:31:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_device_reset [2022-11-22 00:31:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:31:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 00:31:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 00:31:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwpn [2022-11-22 00:31:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwpn [2022-11-22 00:31:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:31:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-11-22 00:31:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-11-22 00:31:33,789 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-22 00:31:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-22 00:31:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_percpu_thread_destroy [2022-11-22 00:31:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_percpu_thread_destroy [2022-11-22 00:31:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2022-11-22 00:31:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2022-11-22 00:31:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-22 00:31:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-22 00:31:33,790 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2022-11-22 00:31:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2022-11-22 00:31:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:31:33,791 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-22 00:31:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2022-11-22 00:31:33,792 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-22 00:31:33,796 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-22 00:31:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure dev_add_pack [2022-11-22 00:31:33,796 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_add_pack [2022-11-22 00:31:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure fc_set_wwnn [2022-11-22 00:31:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_set_wwnn [2022-11-22 00:31:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-22 00:31:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-22 00:31:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 00:31:33,797 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 00:31:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure fc_get_host_stats [2022-11-22 00:31:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_get_host_stats [2022-11-22 00:31:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_enable [2022-11-22 00:31:33,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_enable [2022-11-22 00:31:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure ntoh24 [2022-11-22 00:31:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ntoh24 [2022-11-22 00:31:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure dev_uc_add [2022-11-22 00:31:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_uc_add [2022-11-22 00:31:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-22 00:31:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-22 00:31:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-22 00:31:33,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2022-11-22 00:31:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2022-11-22 00:31:33,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2022-11-22 00:31:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2022-11-22 00:31:33,801 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2022-11-22 00:31:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2022-11-22 00:31:33,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2022-11-22 00:31:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2022-11-22 00:31:33,801 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2022-11-22 00:31:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:31:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_create [2022-11-22 00:31:33,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_create [2022-11-22 00:31:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_device_delete [2022-11-22 00:31:33,802 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_device_delete [2022-11-22 00:31:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 00:31:33,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 00:31:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_add [2022-11-22 00:31:33,802 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_add [2022-11-22 00:31:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 00:31:33,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 00:31:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-22 00:31:33,803 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-22 00:31:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-22 00:31:33,803 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-22 00:31:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure __preempt_count_add [2022-11-22 00:31:33,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __preempt_count_add [2022-11-22 00:31:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_port_send [2022-11-22 00:31:33,804 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_port_send [2022-11-22 00:31:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure fc_eh_host_reset [2022-11-22 00:31:33,804 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_eh_host_reset [2022-11-22 00:31:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2022-11-22 00:31:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2022-11-22 00:31:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 00:31:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 00:31:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_check [2022-11-22 00:31:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_check [2022-11-22 00:31:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2022-11-22 00:31:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2022-11-22 00:31:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure fc_slave_alloc [2022-11-22 00:31:33,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fc_slave_alloc [2022-11-22 00:31:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2022-11-22 00:31:33,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ffs [2022-11-22 00:31:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_elsct_send [2022-11-22 00:31:33,806 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_elsct_send [2022-11-22 00:31:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure vlan_dev_real_dev [2022-11-22 00:31:33,806 INFO L138 BoogieDeclarations]: Found implementation of procedure vlan_dev_real_dev [2022-11-22 00:31:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_maps_update_begin [2022-11-22 00:31:33,806 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_maps_update_begin [2022-11-22 00:31:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2022-11-22 00:31:33,807 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2022-11-22 00:31:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure dev_mc_del [2022-11-22 00:31:33,807 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_mc_del [2022-11-22 00:31:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_remove_pack [2022-11-22 00:31:33,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_remove_pack [2022-11-22 00:31:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:31:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-22 00:31:33,807 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-22 00:31:34,979 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:31:34,983 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:31:35,540 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 00:31:40,342 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:31:44,078 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:31:44,078 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-22 00:31:44,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:44 BoogieIcfgContainer [2022-11-22 00:31:44,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:31:44,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:31:44,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:31:44,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:31:44,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:31:28" (1/3) ... [2022-11-22 00:31:44,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccc5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:44, skipping insertion in model container [2022-11-22 00:31:44,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:31:32" (2/3) ... [2022-11-22 00:31:44,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccc5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:31:44, skipping insertion in model container [2022-11-22 00:31:44,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:31:44" (3/3) ... [2022-11-22 00:31:44,097 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2022-11-22 00:31:44,118 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:31:44,119 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 00:31:44,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:31:44,226 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;@22f41eb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:31:44,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 00:31:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 1821 states, 1105 states have (on average 1.3556561085972851) internal successors, (1498), 1164 states have internal predecessors, (1498), 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) [2022-11-22 00:31:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-22 00:31:44,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:44,297 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] [2022-11-22 00:31:44,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:31:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -215292593, now seen corresponding path program 1 times [2022-11-22 00:31:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:44,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897181802] [2022-11-22 00:31:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-22 00:31:46,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:46,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897181802] [2022-11-22 00:31:46,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897181802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:46,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:46,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:46,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823731569] [2022-11-22 00:31:46,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:46,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:46,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:46,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:46,173 INFO L87 Difference]: Start difference. First operand has 1821 states, 1105 states have (on average 1.3556561085972851) internal successors, (1498), 1164 states have internal predecessors, (1498), 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) [2022-11-22 00:31:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:50,154 INFO L93 Difference]: Finished difference Result 5147 states and 7494 transitions. [2022-11-22 00:31:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:50,157 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 [2022-11-22 00:31:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:50,209 INFO L225 Difference]: With dead ends: 5147 [2022-11-22 00:31:50,209 INFO L226 Difference]: Without dead ends: 3353 [2022-11-22 00:31:50,226 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 [2022-11-22 00:31:50,229 INFO L413 NwaCegarLoop]: 2970 mSDtfsCounter, 2268 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 5231 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:50,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 5231 Invalid, 621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-22 00:31:50,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3353 states. [2022-11-22 00:31:50,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3353 to 3348. [2022-11-22 00:31:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3348 states, 2057 states have (on average 1.3514827418570734) internal successors, (2780), 2142 states have internal predecessors, (2780), 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) [2022-11-22 00:31:50,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 4827 transitions. [2022-11-22 00:31:50,627 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 4827 transitions. Word has length 327 [2022-11-22 00:31:50,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:50,637 INFO L495 AbstractCegarLoop]: Abstraction has 3348 states and 4827 transitions. [2022-11-22 00:31:50,638 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) [2022-11-22 00:31:50,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 4827 transitions. [2022-11-22 00:31:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-22 00:31:50,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:50,660 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] [2022-11-22 00:31:50,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:31:50,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:31:50,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:50,661 INFO L85 PathProgramCache]: Analyzing trace with hash 25862344, now seen corresponding path program 1 times [2022-11-22 00:31:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:50,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514185623] [2022-11-22 00:31:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:50,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:51,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1747 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1747 trivial. 0 not checked. [2022-11-22 00:31:51,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:51,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514185623] [2022-11-22 00:31:51,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514185623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:31:51,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:31:51,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:31:51,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110270358] [2022-11-22 00:31:51,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:31:51,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:31:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:31:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:31:51,550 INFO L87 Difference]: Start difference. First operand 3348 states and 4827 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-22 00:31:55,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:55,485 INFO L93 Difference]: Finished difference Result 9852 states and 14187 transitions. [2022-11-22 00:31:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:31:55,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 357 [2022-11-22 00:31:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:55,550 INFO L225 Difference]: With dead ends: 9852 [2022-11-22 00:31:55,550 INFO L226 Difference]: Without dead ends: 6569 [2022-11-22 00:31:55,573 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 [2022-11-22 00:31:55,575 INFO L413 NwaCegarLoop]: 2811 mSDtfsCounter, 2528 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2528 SdHoareTripleChecker+Valid, 5004 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:55,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2528 Valid, 5004 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-22 00:31:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6569 states. [2022-11-22 00:31:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 6554. [2022-11-22 00:31:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6554 states, 4028 states have (on average 1.3530287984111222) internal successors, (5450), 4200 states have internal predecessors, (5450), 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) [2022-11-22 00:31:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6554 states to 6554 states and 9438 transitions. [2022-11-22 00:31:56,159 INFO L78 Accepts]: Start accepts. Automaton has 6554 states and 9438 transitions. Word has length 357 [2022-11-22 00:31:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:56,164 INFO L495 AbstractCegarLoop]: Abstraction has 6554 states and 9438 transitions. [2022-11-22 00:31:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2022-11-22 00:31:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6554 states and 9438 transitions. [2022-11-22 00:31:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-22 00:31:56,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:56,181 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, 1] [2022-11-22 00:31:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:31:56,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:31:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:56,194 INFO L85 PathProgramCache]: Analyzing trace with hash 306885714, now seen corresponding path program 1 times [2022-11-22 00:31:56,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:56,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263084971] [2022-11-22 00:31:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:56,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-22 00:31:58,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263084971] [2022-11-22 00:31:58,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263084971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:31:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366983289] [2022-11-22 00:31:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:58,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:31:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:58,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:31:58,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:32:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:00,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 6020 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 00:32:00,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-22 00:32:00,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:00,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366983289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:00,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:32:00,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-22 00:32:00,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981964149] [2022-11-22 00:32:00,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:00,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:00,934 INFO L87 Difference]: Start difference. First operand 6554 states and 9438 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-11-22 00:32:09,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:09,981 INFO L93 Difference]: Finished difference Result 19484 states and 28292 transitions. [2022-11-22 00:32:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:32:09,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 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 442 [2022-11-22 00:32:09,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:10,074 INFO L225 Difference]: With dead ends: 19484 [2022-11-22 00:32:10,074 INFO L226 Difference]: Without dead ends: 12995 [2022-11-22 00:32:10,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:32:10,109 INFO L413 NwaCegarLoop]: 3301 mSDtfsCounter, 2549 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2549 SdHoareTripleChecker+Valid, 7886 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:10,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2549 Valid, 7886 Invalid, 3454 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3437 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-22 00:32:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12995 states. [2022-11-22 00:32:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12995 to 12930. [2022-11-22 00:32:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12930 states, 7964 states have (on average 1.3556002009040684) internal successors, (10796), 8316 states have internal predecessors, (10796), 3867 states have call successors, (3867), 1099 states have call predecessors, (3867), 1098 states have return successors, (4113), 3766 states have call predecessors, (4113), 3865 states have call successors, (4113) [2022-11-22 00:32:10,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12930 states to 12930 states and 18776 transitions. [2022-11-22 00:32:10,821 INFO L78 Accepts]: Start accepts. Automaton has 12930 states and 18776 transitions. Word has length 442 [2022-11-22 00:32:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:10,822 INFO L495 AbstractCegarLoop]: Abstraction has 12930 states and 18776 transitions. [2022-11-22 00:32:10,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 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) [2022-11-22 00:32:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 12930 states and 18776 transitions. [2022-11-22 00:32:10,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-22 00:32:10,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:10,843 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, 1] [2022-11-22 00:32:10,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:11,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:11,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:11,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:11,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1214301697, now seen corresponding path program 1 times [2022-11-22 00:32:11,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:11,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857375167] [2022-11-22 00:32:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:11,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-22 00:32:13,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:13,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857375167] [2022-11-22 00:32:13,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857375167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:13,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092924519] [2022-11-22 00:32:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:13,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:13,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:13,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:32:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:15,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 6024 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 00:32:15,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1766 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-22 00:32:16,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:32:16,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092924519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:16,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:32:16,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-11-22 00:32:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546201004] [2022-11-22 00:32:16,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:16,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:32:16,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:32:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:32:16,085 INFO L87 Difference]: Start difference. First operand 12930 states and 18776 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-11-22 00:32:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:24,028 INFO L93 Difference]: Finished difference Result 25840 states and 37602 transitions. [2022-11-22 00:32:24,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:32:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 444 [2022-11-22 00:32:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:24,103 INFO L225 Difference]: With dead ends: 25840 [2022-11-22 00:32:24,104 INFO L226 Difference]: Without dead ends: 12975 [2022-11-22 00:32:24,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:24,160 INFO L413 NwaCegarLoop]: 3295 mSDtfsCounter, 2534 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 3426 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 7869 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:24,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2534 Valid, 7869 Invalid, 3440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 3426 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-22 00:32:24,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12975 states. [2022-11-22 00:32:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12975 to 12910. [2022-11-22 00:32:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12910 states, 7956 states have (on average 1.354449472096531) internal successors, (10776), 8304 states have internal predecessors, (10776), 3855 states have call successors, (3855), 1099 states have call predecessors, (3855), 1098 states have return successors, (4077), 3754 states have call predecessors, (4077), 3853 states have call successors, (4077) [2022-11-22 00:32:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12910 states to 12910 states and 18708 transitions. [2022-11-22 00:32:24,801 INFO L78 Accepts]: Start accepts. Automaton has 12910 states and 18708 transitions. Word has length 444 [2022-11-22 00:32:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:24,803 INFO L495 AbstractCegarLoop]: Abstraction has 12910 states and 18708 transitions. [2022-11-22 00:32:24,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-11-22 00:32:24,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12910 states and 18708 transitions. [2022-11-22 00:32:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-22 00:32:24,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:24,821 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] [2022-11-22 00:32:24,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:25,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-22 00:32:25,039 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:25,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash 587530860, now seen corresponding path program 1 times [2022-11-22 00:32:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:25,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176531982] [2022-11-22 00:32:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-22 00:32:26,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:26,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176531982] [2022-11-22 00:32:26,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176531982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:32:26,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:32:26,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 00:32:26,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480920797] [2022-11-22 00:32:26,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:26,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:32:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:26,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:32:26,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:32:26,860 INFO L87 Difference]: Start difference. First operand 12910 states and 18708 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) [2022-11-22 00:32:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:57,893 INFO L93 Difference]: Finished difference Result 30592 states and 45179 transitions. [2022-11-22 00:32:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:32:57,894 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 [2022-11-22 00:32:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:58,023 INFO L225 Difference]: With dead ends: 30592 [2022-11-22 00:32:58,024 INFO L226 Difference]: Without dead ends: 17747 [2022-11-22 00:32:58,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:32:58,091 INFO L413 NwaCegarLoop]: 2328 mSDtfsCounter, 4761 mSDsluCounter, 6503 mSDsCounter, 0 mSdLazyCounter, 18064 mSolverCounterSat, 3877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5371 SdHoareTripleChecker+Valid, 8831 SdHoareTripleChecker+Invalid, 21941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3877 IncrementalHoareTripleChecker+Valid, 18064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:58,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5371 Valid, 8831 Invalid, 21941 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3877 Valid, 18064 Invalid, 0 Unknown, 0 Unchecked, 29.3s Time] [2022-11-22 00:32:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2022-11-22 00:32:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 17650. [2022-11-22 00:32:59,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17650 states, 10670 states have (on average 1.3325210871602624) internal successors, (14218), 11136 states have internal predecessors, (14218), 5373 states have call successors, (5373), 1503 states have call predecessors, (5373), 1606 states have return successors, (6431), 5370 states have call predecessors, (6431), 5371 states have call successors, (6431) [2022-11-22 00:32:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17650 states to 17650 states and 26022 transitions. [2022-11-22 00:32:59,426 INFO L78 Accepts]: Start accepts. Automaton has 17650 states and 26022 transitions. Word has length 423 [2022-11-22 00:32:59,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:59,427 INFO L495 AbstractCegarLoop]: Abstraction has 17650 states and 26022 transitions. [2022-11-22 00:32:59,428 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) [2022-11-22 00:32:59,428 INFO L276 IsEmpty]: Start isEmpty. Operand 17650 states and 26022 transitions. [2022-11-22 00:32:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-22 00:32:59,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:59,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:59,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:32:59,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:32:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1174128346, now seen corresponding path program 1 times [2022-11-22 00:32:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:59,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396002149] [2022-11-22 00:32:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2022-11-22 00:33:00,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396002149] [2022-11-22 00:33:00,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396002149] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:33:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262566176] [2022-11-22 00:33:00,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:00,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:00,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:00,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:00,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:33:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:03,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 6023 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 00:33:03,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:33:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1767 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-22 00:33:03,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:33:03,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262566176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:03,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:33:03,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-22 00:33:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754430822] [2022-11-22 00:33:03,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:03,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:33:03,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:33:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:03,370 INFO L87 Difference]: Start difference. First operand 17650 states and 26022 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-11-22 00:33:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:12,027 INFO L93 Difference]: Finished difference Result 46607 states and 68582 transitions. [2022-11-22 00:33:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:33:12,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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 444 [2022-11-22 00:33:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:12,215 INFO L225 Difference]: With dead ends: 46607 [2022-11-22 00:33:12,215 INFO L226 Difference]: Without dead ends: 29022 [2022-11-22 00:33:12,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:33:12,300 INFO L413 NwaCegarLoop]: 3069 mSDtfsCounter, 1502 mSDsluCounter, 7040 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 10109 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:12,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 10109 Invalid, 2915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 00:33:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29022 states. [2022-11-22 00:33:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29022 to 29018. [2022-11-22 00:33:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29018 states, 17208 states have (on average 1.305206880520688) internal successors, (22460), 17904 states have internal predecessors, (22460), 8903 states have call successors, (8903), 2699 states have call predecessors, (8903), 2906 states have return successors, (10661), 8974 states have call predecessors, (10661), 8901 states have call successors, (10661) [2022-11-22 00:33:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29018 states to 29018 states and 42024 transitions. [2022-11-22 00:33:14,400 INFO L78 Accepts]: Start accepts. Automaton has 29018 states and 42024 transitions. Word has length 444 [2022-11-22 00:33:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:14,404 INFO L495 AbstractCegarLoop]: Abstraction has 29018 states and 42024 transitions. [2022-11-22 00:33:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-11-22 00:33:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 29018 states and 42024 transitions. [2022-11-22 00:33:14,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-22 00:33:14,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:14,426 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, 1] [2022-11-22 00:33:14,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:33:14,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:14,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2044214504, now seen corresponding path program 1 times [2022-11-22 00:33:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:14,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191800906] [2022-11-22 00:33:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:14,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1751 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-22 00:33:16,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:16,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191800906] [2022-11-22 00:33:16,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191800906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:16,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:16,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 00:33:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185672849] [2022-11-22 00:33:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:33:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:33:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 00:33:16,639 INFO L87 Difference]: Start difference. First operand 29018 states and 42024 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) [2022-11-22 00:33:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:44,729 INFO L93 Difference]: Finished difference Result 54641 states and 79466 transitions. [2022-11-22 00:33:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 00:33:44,730 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 [2022-11-22 00:33:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:44,876 INFO L225 Difference]: With dead ends: 54641 [2022-11-22 00:33:44,876 INFO L226 Difference]: Without dead ends: 25664 [2022-11-22 00:33:44,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:33:44,986 INFO L413 NwaCegarLoop]: 1950 mSDtfsCounter, 5025 mSDsluCounter, 6011 mSDsCounter, 0 mSdLazyCounter, 17697 mSolverCounterSat, 3983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 7961 SdHoareTripleChecker+Invalid, 21680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3983 IncrementalHoareTripleChecker+Valid, 17697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:44,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5628 Valid, 7961 Invalid, 21680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3983 Valid, 17697 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2022-11-22 00:33:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25664 states. [2022-11-22 00:33:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25664 to 25532. [2022-11-22 00:33:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25532 states, 15210 states have (on average 1.3116370808678501) internal successors, (19950), 15838 states have internal predecessors, (19950), 7827 states have call successors, (7827), 2287 states have call predecessors, (7827), 2494 states have return successors, (9431), 7910 states have call predecessors, (9431), 7825 states have call successors, (9431) [2022-11-22 00:33:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25532 states to 25532 states and 37208 transitions. [2022-11-22 00:33:47,155 INFO L78 Accepts]: Start accepts. Automaton has 25532 states and 37208 transitions. Word has length 422 [2022-11-22 00:33:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:47,156 INFO L495 AbstractCegarLoop]: Abstraction has 25532 states and 37208 transitions. [2022-11-22 00:33:47,157 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) [2022-11-22 00:33:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25532 states and 37208 transitions. [2022-11-22 00:33:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-22 00:33:47,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:47,185 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] [2022-11-22 00:33:47,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:33:47,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1339510566, now seen corresponding path program 1 times [2022-11-22 00:33:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143198213] [2022-11-22 00:33:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1759 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-11-22 00:33:48,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:48,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143198213] [2022-11-22 00:33:48,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143198213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:33:48,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:33:48,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:33:48,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812593345] [2022-11-22 00:33:48,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:33:48,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:33:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:33:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:33:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:33:48,196 INFO L87 Difference]: Start difference. First operand 25532 states and 37208 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) [2022-11-22 00:33:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:33:53,564 INFO L93 Difference]: Finished difference Result 73703 states and 107216 transitions. [2022-11-22 00:33:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:33:53,565 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 [2022-11-22 00:33:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:33:53,857 INFO L225 Difference]: With dead ends: 73703 [2022-11-22 00:33:53,857 INFO L226 Difference]: Without dead ends: 48236 [2022-11-22 00:33:53,991 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 [2022-11-22 00:33:53,994 INFO L413 NwaCegarLoop]: 2822 mSDtfsCounter, 2430 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2430 SdHoareTripleChecker+Valid, 4997 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:33:53,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2430 Valid, 4997 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-22 00:33:54,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48236 states. [2022-11-22 00:33:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48236 to 48219. [2022-11-22 00:33:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48219 states, 28643 states have (on average 1.3079635513039836) internal successors, (37464), 29849 states have internal predecessors, (37464), 14732 states have call successors, (14732), 4428 states have call predecessors, (14732), 4843 states have return successors, (17882), 14909 states have call predecessors, (17882), 14730 states have call successors, (17882) [2022-11-22 00:33:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48219 states to 48219 states and 70078 transitions. [2022-11-22 00:33:57,725 INFO L78 Accepts]: Start accepts. Automaton has 48219 states and 70078 transitions. Word has length 437 [2022-11-22 00:33:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:33:57,726 INFO L495 AbstractCegarLoop]: Abstraction has 48219 states and 70078 transitions. [2022-11-22 00:33:57,727 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) [2022-11-22 00:33:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 48219 states and 70078 transitions. [2022-11-22 00:33:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-22 00:33:57,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:33:57,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:33:57,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:33:57,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:33:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:33:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -20583250, now seen corresponding path program 1 times [2022-11-22 00:33:57,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:33:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872093145] [2022-11-22 00:33:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:33:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:33:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1762 trivial. 0 not checked. [2022-11-22 00:33:58,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:33:58,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872093145] [2022-11-22 00:33:58,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872093145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:33:58,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040580372] [2022-11-22 00:33:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:33:58,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:33:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:33:58,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:33:58,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:34:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:01,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 6340 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 00:34:01,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:34:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-11-22 00:34:01,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:34:01,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040580372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:01,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:34:01,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-22 00:34:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655015767] [2022-11-22 00:34:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:34:01,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:34:01,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:34:01,079 INFO L87 Difference]: Start difference. First operand 48219 states and 70078 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-11-22 00:34:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:08,714 INFO L93 Difference]: Finished difference Result 143686 states and 208654 transitions. [2022-11-22 00:34:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:34:08,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 474 [2022-11-22 00:34:08,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:09,294 INFO L225 Difference]: With dead ends: 143686 [2022-11-22 00:34:09,294 INFO L226 Difference]: Without dead ends: 95532 [2022-11-22 00:34:09,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:34:09,528 INFO L413 NwaCegarLoop]: 2950 mSDtfsCounter, 2492 mSDsluCounter, 2206 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2492 SdHoareTripleChecker+Valid, 5156 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:09,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2492 Valid, 5156 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-22 00:34:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95532 states. [2022-11-22 00:34:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95532 to 95515. [2022-11-22 00:34:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95515 states, 56661 states have (on average 1.3054481918780114) internal successors, (73968), 59021 states have internal predecessors, (73968), 29184 states have call successors, (29184), 8838 states have call predecessors, (29184), 9669 states have return successors, (35486), 29543 states have call predecessors, (35486), 29182 states have call successors, (35486) [2022-11-22 00:34:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95515 states to 95515 states and 138638 transitions. [2022-11-22 00:34:15,284 INFO L78 Accepts]: Start accepts. Automaton has 95515 states and 138638 transitions. Word has length 474 [2022-11-22 00:34:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:34:15,285 INFO L495 AbstractCegarLoop]: Abstraction has 95515 states and 138638 transitions. [2022-11-22 00:34:15,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2022-11-22 00:34:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 95515 states and 138638 transitions. [2022-11-22 00:34:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-22 00:34:15,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:34:15,333 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 19, 19, 19, 19, 19, 19, 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] [2022-11-22 00:34:15,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:34:15,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_929440f2-d987-49f9-85a8-f9f61f4e0fdd/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:34:15,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 00:34:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:34:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1283732773, now seen corresponding path program 1 times [2022-11-22 00:34:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:34:15,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542561878] [2022-11-22 00:34:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:34:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:34:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:34:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3511 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3507 trivial. 0 not checked. [2022-11-22 00:34:17,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:34:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542561878] [2022-11-22 00:34:17,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542561878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:34:17,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:34:17,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:34:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626259724] [2022-11-22 00:34:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:34:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:34:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:34:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:34:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:34:17,088 INFO L87 Difference]: Start difference. First operand 95515 states and 138638 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 00:34:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:34:24,965 INFO L93 Difference]: Finished difference Result 191066 states and 277329 transitions. [2022-11-22 00:34:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:34:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 508 [2022-11-22 00:34:24,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:34:25,377 INFO L225 Difference]: With dead ends: 191066 [2022-11-22 00:34:25,377 INFO L226 Difference]: Without dead ends: 95568 [2022-11-22 00:34:25,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:34:25,648 INFO L413 NwaCegarLoop]: 2301 mSDtfsCounter, 10 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6892 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:34:25,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 6892 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 00:34:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95568 states.