./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P --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 5eade98d3572945dc3f3afa13df28f18738479fb416def85e3793aeb4de65612 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:50:04,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:50:04,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:50:04,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:50:04,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:50:04,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:50:04,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:50:04,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:50:04,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:50:04,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:50:04,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:50:04,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:50:04,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:50:04,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:50:04,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:50:04,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:50:04,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:50:04,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:50:04,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:50:04,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:50:04,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:50:04,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:50:04,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:50:04,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:50:04,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:50:04,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:50:04,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:50:04,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:50:04,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:50:04,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:50:04,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:50:04,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:50:04,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:50:04,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:50:04,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:50:04,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:50:04,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:50:04,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:50:04,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:50:04,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:50:04,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:50:04,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:50:04,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:50:04,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:50:04,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:50:04,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:50:04,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:50:04,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:50:04,678 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:50:04,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:50:04,679 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:50:04,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:50:04,680 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:50:04,681 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:50:04,681 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:50:04,681 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:50:04,682 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:50:04,682 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:50:04,682 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:50:04,682 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:50:04,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:50:04,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:50:04,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:50:04,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:50:04,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:50:04,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:50:04,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:50:04,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:50:04,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:50:04,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:50:04,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:50:04,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:50:04,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:50:04,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:50:04,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:50:04,689 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:50:04,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:50:04,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:50:04,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:50:04,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:50:04,691 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eade98d3572945dc3f3afa13df28f18738479fb416def85e3793aeb4de65612 [2021-11-20 23:50:05,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:50:05,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:50:05,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:50:05,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:50:05,038 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:50:05,039 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i [2021-11-20 23:50:05,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/data/8052ec22c/19cb8db0c105406f8d173fcb92c9d6ac/FLAGdd1b33823 [2021-11-20 23:50:06,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:50:06,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i [2021-11-20 23:50:06,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/data/8052ec22c/19cb8db0c105406f8d173fcb92c9d6ac/FLAGdd1b33823 [2021-11-20 23:50:06,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/data/8052ec22c/19cb8db0c105406f8d173fcb92c9d6ac [2021-11-20 23:50:06,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:50:06,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:50:06,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:50:06,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:50:06,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:50:06,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:06" (1/1) ... [2021-11-20 23:50:06,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@385504d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:06, skipping insertion in model container [2021-11-20 23:50:06,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:50:06" (1/1) ... [2021-11-20 23:50:06,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:50:07,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:50:15,564 WARN L230 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_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i[615856,615869] [2021-11-20 23:50:15,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:50:15,977 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:50:17,065 WARN L230 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_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i[615856,615869] [2021-11-20 23:50:17,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:50:17,714 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:50:17,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17 WrapperNode [2021-11-20 23:50:17,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:50:17,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:50:17,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:50:17,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:50:17,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,529 INFO L137 Inliner]: procedures = 720, calls = 7789, calls flagged for inlining = 365, calls inlined = 99, statements flattened = 7352 [2021-11-20 23:50:18,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:50:18,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:50:18,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:50:18,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:50:18,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:18,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:19,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:50:19,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:50:19,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:50:19,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:50:19,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (1/1) ... [2021-11-20 23:50:19,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:50:19,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:50:19,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:50:19,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f8ae3d4-1df5-42a4-a673-e8a9b7842f91/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:50:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_compl_use [2021-11-20 23:50:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_compl_use [2021-11-20 23:50:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure be_mbox_notify_wait [2021-11-20 23:50:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mbox_notify_wait [2021-11-20 23:50:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure be_is_wol_excluded [2021-11-20 23:50:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure be_is_wol_excluded [2021-11-20 23:50:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_compl_is_new [2021-11-20 23:50:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_compl_is_new [2021-11-20 23:50:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2021-11-20 23:50:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2021-11-20 23:50:19,167 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-20 23:50:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-20 23:50:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure ssleep [2021-11-20 23:50:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ssleep [2021-11-20 23:50:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:50:19,168 INFO L130 BoogieDeclarations]: Found specification of procedure swap_dws [2021-11-20 23:50:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure swap_dws [2021-11-20 23:50:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure lancer_cmd_write_object [2021-11-20 23:50:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure lancer_cmd_write_object [2021-11-20 23:50:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:50:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:50:19,169 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-20 23:50:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-20 23:50:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:50:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure be_flash_redboot [2021-11-20 23:50:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure be_flash_redboot [2021-11-20 23:50:19,170 INFO L130 BoogieDeclarations]: Found specification of procedure lancer_cmd_read_file [2021-11-20 23:50:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure lancer_cmd_read_file [2021-11-20 23:50:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:50:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:50:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-20 23:50:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-20 23:50:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure be_cq_notify [2021-11-20 23:50:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cq_notify [2021-11-20 23:50:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:50:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mbox_lock_of_be_adapter [2021-11-20 23:50:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mbox_lock_of_be_adapter [2021-11-20 23:50:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:50:19,172 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:50:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:50:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure be_set_msg_level [2021-11-20 23:50:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure be_set_msg_level [2021-11-20 23:50:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-20 23:50:19,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-20 23:50:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:50:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure be_loopback_test [2021-11-20 23:50:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure be_loopback_test [2021-11-20 23:50:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:50:19,174 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:50:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure wrb_from_mccq [2021-11-20 23:50:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure wrb_from_mccq [2021-11-20 23:50:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure amap_set [2021-11-20 23:50:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure amap_set [2021-11-20 23:50:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:50:19,175 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:50:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_compl_process [2021-11-20 23:50:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_compl_process [2021-11-20 23:50:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure embedded_payload [2021-11-20 23:50:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure embedded_payload [2021-11-20 23:50:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure be_decode_resp_hdr [2021-11-20 23:50:19,176 INFO L138 BoogieDeclarations]: Found implementation of procedure be_decode_resp_hdr [2021-11-20 23:50:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:50:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:50:19,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:50:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:50:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-20 23:50:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-20 23:50:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_allowed [2021-11-20 23:50:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_allowed [2021-11-20 23:50:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure be_pause_supported [2021-11-20 23:50:19,178 INFO L138 BoogieDeclarations]: Found implementation of procedure be_pause_supported [2021-11-20 23:50:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:50:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:50:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure convert_to_et_setting [2021-11-20 23:50:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure convert_to_et_setting [2021-11-20 23:50:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure queue_head_node [2021-11-20 23:50:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_head_node [2021-11-20 23:50:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure be_flash_BEx [2021-11-20 23:50:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure be_flash_BEx [2021-11-20 23:50:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_fsec_info [2021-11-20 23:50:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fsec_info [2021-11-20 23:50:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2021-11-20 23:50:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2021-11-20 23:50:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure be_error [2021-11-20 23:50:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure be_error [2021-11-20 23:50:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure lancer_cmd_read_object [2021-11-20 23:50:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure lancer_cmd_read_object [2021-11-20 23:50:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure queue_tail_node [2021-11-20 23:50:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_tail_node [2021-11-20 23:50:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:50:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:50:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-20 23:50:19,182 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-20 23:50:19,182 INFO L130 BoogieDeclarations]: Found specification of procedure be_flash [2021-11-20 23:50:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure be_flash [2021-11-20 23:50:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-20 23:50:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-20 23:50:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:50:19,183 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:50:19,183 INFO L130 BoogieDeclarations]: Found specification of procedure check_privilege [2021-11-20 23:50:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure check_privilege [2021-11-20 23:50:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:50:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_notify_wait [2021-11-20 23:50:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_notify_wait [2021-11-20 23:50:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:50:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure be_link_status_update [2021-11-20 23:50:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure be_link_status_update [2021-11-20 23:50:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-20 23:50:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-20 23:50:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:50:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:50:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_get_fw_ver [2021-11-20 23:50:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_get_fw_ver [2021-11-20 23:50:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_get_flow_control [2021-11-20 23:50:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_get_flow_control [2021-11-20 23:50:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:50:19,186 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:50:19,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 23:50:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 23:50:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_link_status_query [2021-11-20 23:50:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_link_status_query [2021-11-20 23:50:19,187 INFO L130 BoogieDeclarations]: Found specification of procedure be_process_mcc [2021-11-20 23:50:19,187 INFO L138 BoogieDeclarations]: Found implementation of procedure be_process_mcc [2021-11-20 23:50:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:50:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:50:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:50:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:50:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:50:19,188 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:50:19,188 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_rss_config [2021-11-20 23:50:19,189 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_rss_config [2021-11-20 23:50:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure lancer_cmd_get_file_len [2021-11-20 23:50:19,189 INFO L138 BoogieDeclarations]: Found implementation of procedure lancer_cmd_get_file_len [2021-11-20 23:50:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-20 23:50:19,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-20 23:50:19,189 INFO L130 BoogieDeclarations]: Found specification of procedure be_multi_rxq [2021-11-20 23:50:19,190 INFO L138 BoogieDeclarations]: Found implementation of procedure be_multi_rxq [2021-11-20 23:50:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mbox_lock_of_be_adapter [2021-11-20 23:50:19,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mbox_lock_of_be_adapter [2021-11-20 23:50:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:50:19,190 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:50:19,190 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:50:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:50:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure be_detect_error [2021-11-20 23:50:19,191 INFO L138 BoogieDeclarations]: Found implementation of procedure be_detect_error [2021-11-20 23:50:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure MODULO___0 [2021-11-20 23:50:19,191 INFO L138 BoogieDeclarations]: Found implementation of procedure MODULO___0 [2021-11-20 23:50:19,191 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-11-20 23:50:19,192 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-11-20 23:50:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure local_bh_disable [2021-11-20 23:50:19,192 INFO L138 BoogieDeclarations]: Found implementation of procedure local_bh_disable [2021-11-20 23:50:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:50:19,192 INFO L130 BoogieDeclarations]: Found specification of procedure index_inc___0 [2021-11-20 23:50:19,192 INFO L138 BoogieDeclarations]: Found implementation of procedure index_inc___0 [2021-11-20 23:50:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure be_mcc_notify [2021-11-20 23:50:19,193 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mcc_notify [2021-11-20 23:50:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:50:19,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:50:19,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-20 23:50:19,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-20 23:50:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_get_phy_info [2021-11-20 23:50:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_get_phy_info [2021-11-20 23:50:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure be_wrb_cmd_hdr_prepare [2021-11-20 23:50:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure be_wrb_cmd_hdr_prepare [2021-11-20 23:50:19,194 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_set_loopback [2021-11-20 23:50:19,194 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_set_loopback [2021-11-20 23:50:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure be_hw_error [2021-11-20 23:50:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure be_hw_error [2021-11-20 23:50:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-20 23:50:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-20 23:50:19,195 INFO L130 BoogieDeclarations]: Found specification of procedure be_mbox_db_ready_wait [2021-11-20 23:50:19,195 INFO L138 BoogieDeclarations]: Found implementation of procedure be_mbox_db_ready_wait [2021-11-20 23:50:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:50:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:50:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_get_ext_fat_capabilites [2021-11-20 23:50:19,196 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_get_ext_fat_capabilites [2021-11-20 23:50:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:50:19,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:50:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:50:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2021-11-20 23:50:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2021-11-20 23:50:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-20 23:50:19,197 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-20 23:50:19,197 INFO L130 BoogieDeclarations]: Found specification of procedure hw_stats_from_cmd [2021-11-20 23:50:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure hw_stats_from_cmd [2021-11-20 23:50:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-20 23:50:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-20 23:50:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure wrb_from_mbox [2021-11-20 23:50:19,198 INFO L138 BoogieDeclarations]: Found implementation of procedure wrb_from_mbox [2021-11-20 23:50:19,198 INFO L130 BoogieDeclarations]: Found specification of procedure amap_mask [2021-11-20 23:50:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure amap_mask [2021-11-20 23:50:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-20 23:50:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-20 23:50:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:50:19,199 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:50:19,199 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-20 23:50:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-20 23:50:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_set_beacon_state [2021-11-20 23:50:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_set_beacon_state [2021-11-20 23:50:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure be_is_wol_supported [2021-11-20 23:50:19,200 INFO L138 BoogieDeclarations]: Found implementation of procedure be_is_wol_supported [2021-11-20 23:50:19,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:50:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure local_bh_enable [2021-11-20 23:50:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure local_bh_enable [2021-11-20 23:50:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:50:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:50:19,201 INFO L130 BoogieDeclarations]: Found specification of procedure be_cmd_set_flow_control [2021-11-20 23:50:19,201 INFO L138 BoogieDeclarations]: Found implementation of procedure be_cmd_set_flow_control [2021-11-20 23:50:20,221 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:50:20,225 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:01:16,083 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:01:20,748 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:01:20,748 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:01:20,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:01:20 BoogieIcfgContainer [2021-11-21 00:01:20,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:01:20,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:01:20,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:01:20,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:01:20,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:50:06" (1/3) ... [2021-11-21 00:01:20,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b872a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:01:20, skipping insertion in model container [2021-11-21 00:01:20,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:50:17" (2/3) ... [2021-11-21 00:01:20,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b872a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:01:20, skipping insertion in model container [2021-11-21 00:01:20,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:01:20" (3/3) ... [2021-11-21 00:01:20,767 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--net--ethernet--emulex--benet--be2net.ko-ldv_main2.cil.out.i [2021-11-21 00:01:20,773 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:01:20,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:01:20,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:01:20,854 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:01:20,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:01:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 1279 states, 803 states have (on average 1.3250311332503113) internal successors, (1064), 818 states have internal predecessors, (1064), 378 states have call successors, (378), 96 states have call predecessors, (378), 96 states have return successors, (378), 376 states have call predecessors, (378), 378 states have call successors, (378) [2021-11-21 00:01:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:01:20,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:20,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:20,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:01:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1314975508, now seen corresponding path program 1 times [2021-11-21 00:01:20,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:20,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465294378] [2021-11-21 00:01:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:20,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:22,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:22,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465294378] [2021-11-21 00:01:22,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465294378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:22,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:22,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:22,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461553425] [2021-11-21 00:01:22,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:22,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:22,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:22,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:22,193 INFO L87 Difference]: Start difference. First operand has 1279 states, 803 states have (on average 1.3250311332503113) internal successors, (1064), 818 states have internal predecessors, (1064), 378 states have call successors, (378), 96 states have call predecessors, (378), 96 states have return successors, (378), 376 states have call predecessors, (378), 378 states have call successors, (378) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:01:24,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:28,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:31,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:33,465 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:35,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:37,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:39,112 INFO L93 Difference]: Finished difference Result 2794 states and 3957 transitions. [2021-11-21 00:01:39,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:01:39,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-11-21 00:01:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:39,151 INFO L225 Difference]: With dead ends: 2794 [2021-11-21 00:01:39,152 INFO L226 Difference]: Without dead ends: 1512 [2021-11-21 00:01:39,171 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:01:39,176 INFO L933 BasicCegarLoop]: 1685 mSDtfsCounter, 1750 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:39,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1755 Valid, 1972 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 6 Unknown, 0 Unchecked, 16.7s Time] [2021-11-21 00:01:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-21 00:01:39,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1509. [2021-11-21 00:01:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 940 states have (on average 1.3095744680851065) internal successors, (1231), 958 states have internal predecessors, (1231), 435 states have call successors, (435), 135 states have call predecessors, (435), 133 states have return successors, (431), 424 states have call predecessors, (431), 429 states have call successors, (431) [2021-11-21 00:01:39,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2097 transitions. [2021-11-21 00:01:39,405 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2097 transitions. Word has length 10 [2021-11-21 00:01:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:39,405 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 2097 transitions. [2021-11-21 00:01:39,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:01:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2097 transitions. [2021-11-21 00:01:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:01:39,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:39,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:39,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:01:39,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:01:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:39,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2107321082, now seen corresponding path program 1 times [2021-11-21 00:01:39,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:39,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129736577] [2021-11-21 00:01:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:39,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:39,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:39,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129736577] [2021-11-21 00:01:39,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129736577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:39,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:39,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:39,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894999583] [2021-11-21 00:01:39,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:39,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:39,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:39,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:39,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:39,965 INFO L87 Difference]: Start difference. First operand 1509 states and 2097 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:01:42,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:44,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:48,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:50,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:52,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:54,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:57,029 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:58,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:58,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:58,758 INFO L93 Difference]: Finished difference Result 1514 states and 2101 transitions. [2021-11-21 00:01:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:01:58,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-21 00:01:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:58,775 INFO L225 Difference]: With dead ends: 1514 [2021-11-21 00:01:58,775 INFO L226 Difference]: Without dead ends: 1511 [2021-11-21 00:01:58,777 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:01:58,782 INFO L933 BasicCegarLoop]: 1676 mSDtfsCounter, 1739 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:58,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 1961 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 6 Unknown, 0 Unchecked, 18.7s Time] [2021-11-21 00:01:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-11-21 00:01:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1508. [2021-11-21 00:01:58,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 940 states have (on average 1.3085106382978724) internal successors, (1230), 957 states have internal predecessors, (1230), 434 states have call successors, (434), 135 states have call predecessors, (434), 133 states have return successors, (431), 424 states have call predecessors, (431), 429 states have call successors, (431) [2021-11-21 00:01:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2095 transitions. [2021-11-21 00:01:58,909 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2095 transitions. Word has length 11 [2021-11-21 00:01:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:58,910 INFO L470 AbstractCegarLoop]: Abstraction has 1508 states and 2095 transitions. [2021-11-21 00:01:58,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:01:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2095 transitions. [2021-11-21 00:01:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:01:58,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:58,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:01:58,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:01:58,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:01:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash 900234967, now seen corresponding path program 1 times [2021-11-21 00:01:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:58,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979549037] [2021-11-21 00:01:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:58,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:01:59,431 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979549037] [2021-11-21 00:01:59,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979549037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:59,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:59,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:59,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478155481] [2021-11-21 00:01:59,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:59,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:59,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:59,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:59,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:59,434 INFO L87 Difference]: Start difference. First operand 1508 states and 2095 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:02:01,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:04,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:06,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:09,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:11,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:14,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:16,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:17,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:18,416 INFO L93 Difference]: Finished difference Result 2619 states and 3679 transitions. [2021-11-21 00:02:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-21 00:02:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:18,441 INFO L225 Difference]: With dead ends: 2619 [2021-11-21 00:02:18,441 INFO L226 Difference]: Without dead ends: 2615 [2021-11-21 00:02:18,444 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:18,445 INFO L933 BasicCegarLoop]: 1979 mSDtfsCounter, 1553 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3546 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:18,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 3546 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 444 Invalid, 6 Unknown, 0 Unchecked, 18.8s Time] [2021-11-21 00:02:18,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2021-11-21 00:02:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2608. [2021-11-21 00:02:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 1629 states have (on average 1.3118477593615716) internal successors, (2137), 1657 states have internal predecessors, (2137), 764 states have call successors, (764), 218 states have call predecessors, (764), 214 states have return successors, (767), 747 states have call predecessors, (767), 758 states have call successors, (767) [2021-11-21 00:02:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3668 transitions. [2021-11-21 00:02:18,598 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3668 transitions. Word has length 12 [2021-11-21 00:02:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:18,599 INFO L470 AbstractCegarLoop]: Abstraction has 2608 states and 3668 transitions. [2021-11-21 00:02:18,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:02:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3668 transitions. [2021-11-21 00:02:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:02:18,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:18,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:02:18,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:02:18,602 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:18,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2135275933, now seen corresponding path program 1 times [2021-11-21 00:02:18,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:18,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71380319] [2021-11-21 00:02:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:18,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:02:19,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:19,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71380319] [2021-11-21 00:02:19,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71380319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:19,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:19,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:02:19,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484129360] [2021-11-21 00:02:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:19,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:02:19,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:19,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:02:19,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:02:19,043 INFO L87 Difference]: Start difference. First operand 2608 states and 3668 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:02:21,215 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:25,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:27,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:29,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:32,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:34,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:02:35,450 INFO L93 Difference]: Finished difference Result 2819 states and 3930 transitions. [2021-11-21 00:02:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:02:35,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-21 00:02:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:02:35,475 INFO L225 Difference]: With dead ends: 2819 [2021-11-21 00:02:35,476 INFO L226 Difference]: Without dead ends: 2811 [2021-11-21 00:02:35,478 INFO L932 BasicCegarLoop]: 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 [2021-11-21 00:02:35,479 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 1734 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 1981 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:02:35,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 1981 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 6 Unknown, 0 Unchecked, 16.3s Time] [2021-11-21 00:02:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-21 00:02:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2796. [2021-11-21 00:02:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2796 states, 1745 states have (on average 1.3106017191977077) internal successors, (2287), 1784 states have internal predecessors, (2287), 806 states have call successors, (806), 247 states have call predecessors, (806), 244 states have return successors, (813), 783 states have call predecessors, (813), 802 states have call successors, (813) [2021-11-21 00:02:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2796 states to 2796 states and 3906 transitions. [2021-11-21 00:02:35,787 INFO L78 Accepts]: Start accepts. Automaton has 2796 states and 3906 transitions. Word has length 13 [2021-11-21 00:02:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:02:35,788 INFO L470 AbstractCegarLoop]: Abstraction has 2796 states and 3906 transitions. [2021-11-21 00:02:35,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:02:35,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2796 states and 3906 transitions. [2021-11-21 00:02:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-21 00:02:35,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:02:35,810 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:02:35,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:02:35,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:02:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:02:35,811 INFO L85 PathProgramCache]: Analyzing trace with hash -774609604, now seen corresponding path program 1 times [2021-11-21 00:02:35,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:02:35,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333515554] [2021-11-21 00:02:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:02:35,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:02:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:02:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:02:36,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:02:36,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333515554] [2021-11-21 00:02:36,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333515554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:02:36,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:02:36,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:02:36,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150066243] [2021-11-21 00:02:36,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:02:36,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:02:36,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:02:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:02:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:02:36,948 INFO L87 Difference]: Start difference. First operand 2796 states and 3906 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 00:02:39,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:42,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:43,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:45,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:54,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:56,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:58,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:00,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:03,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:05,106 INFO L93 Difference]: Finished difference Result 2930 states and 4077 transitions. [2021-11-21 00:03:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:03:05,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 84 [2021-11-21 00:03:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:05,133 INFO L225 Difference]: With dead ends: 2930 [2021-11-21 00:03:05,134 INFO L226 Difference]: Without dead ends: 2927 [2021-11-21 00:03:05,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:03:05,141 INFO L933 BasicCegarLoop]: 1639 mSDtfsCounter, 499 mSDsluCounter, 5293 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 210 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:05,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 6296 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 903 Invalid, 8 Unknown, 0 Unchecked, 28.0s Time] [2021-11-21 00:03:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2021-11-21 00:03:05,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2923. [2021-11-21 00:03:05,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 1825 states have (on average 1.3095890410958904) internal successors, (2390), 1866 states have internal predecessors, (2390), 836 states have call successors, (836), 265 states have call predecessors, (836), 261 states have return successors, (844), 810 states have call predecessors, (844), 832 states have call successors, (844) [2021-11-21 00:03:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4070 transitions. [2021-11-21 00:03:05,343 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4070 transitions. Word has length 84 [2021-11-21 00:03:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:05,344 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4070 transitions. [2021-11-21 00:03:05,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-21 00:03:05,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4070 transitions. [2021-11-21 00:03:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 00:03:05,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:05,354 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:03:05,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:03:05,354 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:05,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2082901161, now seen corresponding path program 1 times [2021-11-21 00:03:05,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:05,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249731409] [2021-11-21 00:03:05,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:05,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:03:07,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:07,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249731409] [2021-11-21 00:03:07,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249731409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:07,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:07,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:03:07,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202566454] [2021-11-21 00:03:07,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:07,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:03:07,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:07,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:03:07,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:03:07,191 INFO L87 Difference]: Start difference. First operand 2923 states and 4070 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 00:03:09,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:12,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:21,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:24,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:27,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:29,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:03:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:44,323 INFO L93 Difference]: Finished difference Result 4134 states and 5779 transitions. [2021-11-21 00:03:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:03:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2021-11-21 00:03:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:44,363 INFO L225 Difference]: With dead ends: 4134 [2021-11-21 00:03:44,363 INFO L226 Difference]: Without dead ends: 4126 [2021-11-21 00:03:44,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:03:44,368 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 2864 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 2277 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3217 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 5550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2277 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:44,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3217 Valid, 3441 Invalid, 5550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2277 Valid, 3267 Invalid, 6 Unknown, 0 Unchecked, 36.7s Time] [2021-11-21 00:03:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4126 states. [2021-11-21 00:03:44,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4099. [2021-11-21 00:03:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 2561 states have (on average 1.3108160874658337) internal successors, (3357), 2619 states have internal predecessors, (3357), 1181 states have call successors, (1181), 358 states have call predecessors, (1181), 356 states have return successors, (1194), 1148 states have call predecessors, (1194), 1177 states have call successors, (1194) [2021-11-21 00:03:44,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5732 transitions. [2021-11-21 00:03:44,600 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5732 transitions. Word has length 79 [2021-11-21 00:03:44,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:44,602 INFO L470 AbstractCegarLoop]: Abstraction has 4099 states and 5732 transitions. [2021-11-21 00:03:44,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 00:03:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5732 transitions. [2021-11-21 00:03:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-21 00:03:44,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:44,615 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2021-11-21 00:03:44,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:03:44,615 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:44,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1880268129, now seen corresponding path program 1 times [2021-11-21 00:03:44,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:44,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711348106] [2021-11-21 00:03:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:44,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 00:03:46,605 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:46,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711348106] [2021-11-21 00:03:46,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711348106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:46,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:46,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:46,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390408798] [2021-11-21 00:03:46,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:46,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:46,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:46,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:46,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:46,608 INFO L87 Difference]: Start difference. First operand 4099 states and 5732 transitions. Second operand has 4 states, 3 states have (on average 23.0) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-21 00:03:48,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []