./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.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_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/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_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/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_3f4bcb43-5d47-4581-ae48-3db83eb96974/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 ad536555636b28c8712c3c5d6c5a0e9b2263c8f80d84abafe69deecd86daf306 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:54:03,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:54:03,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:54:03,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:54:03,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:54:03,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:54:03,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:54:03,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:54:03,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:54:03,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:54:03,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:54:03,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:54:03,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:54:03,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:54:03,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:54:03,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:54:03,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:54:03,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:54:03,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:54:03,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:54:03,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:54:03,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:54:03,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:54:03,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:54:03,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:54:03,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:54:03,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:54:03,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:54:03,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:54:03,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:54:03,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:54:03,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:54:03,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:54:03,531 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:54:03,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:54:03,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:54:03,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:54:03,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:54:03,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:54:03,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:54:03,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:54:03,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:54:03,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:54:03,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:54:03,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:54:03,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:54:03,587 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:54:03,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:54:03,587 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:54:03,588 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:54:03,588 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:54:03,588 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:54:03,589 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:54:03,589 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:54:03,590 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:54:03,590 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:54:03,590 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:54:03,590 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:54:03,591 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:54:03,591 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:54:03,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:54:03,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:54:03,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:54:03,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:54:03,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:54:03,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:54:03,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:54:03,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:54:03,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:54:03,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:54:03,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:54:03,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:03,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:54:03,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:54:03,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:54:03,597 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:54:03,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:54:03,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:54:03,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:54:03,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:54:03,598 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_3f4bcb43-5d47-4581-ae48-3db83eb96974/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad536555636b28c8712c3c5d6c5a0e9b2263c8f80d84abafe69deecd86daf306 [2021-11-20 23:54:03,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:54:03,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:54:03,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:54:03,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:54:03,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:54:03,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i [2021-11-20 23:54:03,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/data/8b1aa4843/3023a353cb9840909b4ec3a4f7c32961/FLAG392f0059d [2021-11-20 23:54:05,182 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:54:05,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i [2021-11-20 23:54:05,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/data/8b1aa4843/3023a353cb9840909b4ec3a4f7c32961/FLAG392f0059d [2021-11-20 23:54:05,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/data/8b1aa4843/3023a353cb9840909b4ec3a4f7c32961 [2021-11-20 23:54:05,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:54:05,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:54:05,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:05,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:54:05,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:54:05,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:05" (1/1) ... [2021-11-20 23:54:05,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530df8f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:05, skipping insertion in model container [2021-11-20 23:54:05,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:54:05" (1/1) ... [2021-11-20 23:54:05,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:54:06,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:54:14,629 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_3f4bcb43-5d47-4581-ae48-3db83eb96974/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i[826927,826940] [2021-11-20 23:54:14,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:14,849 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:54:15,914 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_3f4bcb43-5d47-4581-ae48-3db83eb96974/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i[826927,826940] [2021-11-20 23:54:15,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:54:16,796 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:54:16,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16 WrapperNode [2021-11-20 23:54:16,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:54:16,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:16,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:54:16,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:54:16,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:17,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:17,785 INFO L137 Inliner]: procedures = 680, calls = 14241, calls flagged for inlining = 319, calls inlined = 270, statements flattened = 26144 [2021-11-20 23:54:17,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:54:17,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:54:17,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:54:17,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:54:17,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:17,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:18,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:18,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:18,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:18,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:18,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:19,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:54:19,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:54:19,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:54:19,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:54:19,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (1/1) ... [2021-11-20 23:54:19,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:54:19,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:54:19,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:54:19,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:54:19,484 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 23:54:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 23:54:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-20 23:54:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-20 23:54:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-20 23:54:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-20 23:54:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-20 23:54:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-20 23:54:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-20 23:54:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-20 23:54:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-20 23:54:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-20 23:54:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:54:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:54:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_slot_reset [2021-11-20 23:54:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_slot_reset [2021-11-20 23:54:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-20 23:54:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-20 23:54:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-20 23:54:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-20 23:54:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:54:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:54:19,497 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-20 23:54:19,497 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-20 23:54:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-20 23:54:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-20 23:54:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:54:19,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:54:19,498 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-20 23:54:19,514 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-20 23:54:19,514 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-20 23:54:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-20 23:54:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-20 23:54:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-20 23:54:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:54:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:54:19,515 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-20 23:54:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-20 23:54:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-20 23:54:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-20 23:54:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-20 23:54:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-20 23:54:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_6 [2021-11-20 23:54:19,517 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_6 [2021-11-20 23:54:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-20 23:54:19,517 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-20 23:54:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-20 23:54:19,517 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-20 23:54:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:54:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:54:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:54:19,518 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:54:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-20 23:54:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-20 23:54:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-20 23:54:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-20 23:54:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:54:19,519 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:54:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-20 23:54:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-20 23:54:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:54:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:54:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-20 23:54:19,520 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-20 23:54:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-20 23:54:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-20 23:54:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-20 23:54:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-20 23:54:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_fix_features [2021-11-20 23:54:19,521 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_fix_features [2021-11-20 23:54:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-20 23:54:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-20 23:54:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:54:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:54:19,522 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:54:19,522 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:54:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 23:54:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 23:54:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:54:19,523 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:54:19,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:54:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:54:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-20 23:54:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-20 23:54:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:54:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 23:54:19,524 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 23:54:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-20 23:54:19,525 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-20 23:54:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-20 23:54:19,525 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-20 23:54:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-20 23:54:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-20 23:54:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-20 23:54:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-20 23:54:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 23:54:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 23:54:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-20 23:54:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-20 23:54:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:54:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:54:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-20 23:54:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-20 23:54:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-20 23:54:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-20 23:54:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-20 23:54:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-20 23:54:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:54:19,528 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:54:19,528 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-20 23:54:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-20 23:54:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-20 23:54:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-20 23:54:19,529 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-20 23:54:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-20 23:54:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:54:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-20 23:54:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-20 23:54:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-20 23:54:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-20 23:54:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-20 23:54:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-20 23:54:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-20 23:54:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-20 23:54:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:54:19,531 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:54:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-20 23:54:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-20 23:54:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:54:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-20 23:54:19,532 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-20 23:54:19,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:54:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:54:19,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:54:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-20 23:54:19,533 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-20 23:54:19,533 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-20 23:54:19,533 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-20 23:54:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-20 23:54:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-20 23:54:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_10 [2021-11-20 23:54:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_10 [2021-11-20 23:54:19,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:54:19,534 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:54:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-20 23:54:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-20 23:54:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-20 23:54:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-20 23:54:19,535 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-20 23:54:19,535 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-20 23:54:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-20 23:54:19,536 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-20 23:54:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-20 23:54:19,536 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-20 23:54:19,536 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-11-20 23:54:19,536 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-11-20 23:54:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-20 23:54:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-20 23:54:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-20 23:54:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-20 23:54:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-20 23:54:19,537 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-20 23:54:19,537 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:54:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:54:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-20 23:54:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-20 23:54:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-20 23:54:19,538 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-20 23:54:19,538 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_stats [2021-11-20 23:54:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_stats [2021-11-20 23:54:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-20 23:54:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-20 23:54:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-20 23:54:19,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-20 23:54:19,539 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-20 23:54:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-20 23:54:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-20 23:54:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-20 23:54:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_frag_len [2021-11-20 23:54:19,540 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_frag_len [2021-11-20 23:54:19,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:54:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-20 23:54:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-20 23:54:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-20 23:54:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-20 23:54:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:54:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:54:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:54:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:54:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:54:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-20 23:54:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-20 23:54:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:54:19,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:54:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-20 23:54:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-20 23:54:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_change_mtu [2021-11-20 23:54:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_change_mtu [2021-11-20 23:54:19,543 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-20 23:54:19,543 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-20 23:54:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-20 23:54:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-20 23:54:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-20 23:54:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-20 23:54:19,544 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-20 23:54:19,544 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-20 23:54:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:54:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:54:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-20 23:54:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-20 23:54:19,545 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-20 23:54:19,545 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-20 23:54:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-20 23:54:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-20 23:54:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:54:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:54:19,546 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-20 23:54:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-20 23:54:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:54:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:54:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-20 23:54:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-20 23:54:19,547 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-20 23:54:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-20 23:54:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-20 23:54:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-20 23:54:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-20 23:54:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-20 23:54:19,548 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-20 23:54:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-20 23:54:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-20 23:54:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-20 23:54:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-20 23:54:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-20 23:54:19,549 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-20 23:54:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-20 23:54:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-20 23:54:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-20 23:54:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-20 23:54:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-20 23:54:19,550 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-20 23:54:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-20 23:54:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:54:19,551 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:54:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:54:19,551 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:54:19,551 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-20 23:54:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-20 23:54:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-20 23:54:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-20 23:54:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-20 23:54:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-20 23:54:19,552 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 23:54:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 23:54:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:54:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:54:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-20 23:54:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-20 23:54:19,553 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-20 23:54:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-20 23:54:19,554 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-20 23:54:19,554 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-20 23:54:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-20 23:54:19,570 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-20 23:54:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-20 23:54:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-20 23:54:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:54:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:54:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-20 23:54:19,571 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-20 23:54:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:54:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:54:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:54:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:54:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-20 23:54:19,572 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-20 23:54:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-20 23:54:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-20 23:54:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_phy_info_task [2021-11-20 23:54:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_phy_info_task [2021-11-20 23:54:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_sync_single_for_cpu [2021-11-20 23:54:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_sync_single_for_cpu [2021-11-20 23:54:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-20 23:54:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-20 23:54:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-20 23:54:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-20 23:54:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:54:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:54:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-20 23:54:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-20 23:54:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-20 23:54:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-20 23:54:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-20 23:54:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-20 23:54:19,576 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-20 23:54:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_alloc_frag [2021-11-20 23:54:19,576 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_alloc_frag [2021-11-20 23:54:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-20 23:54:19,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-20 23:54:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:54:19,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:54:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-20 23:54:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-20 23:54:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:54:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:54:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:54:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:54:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-11-20 23:54:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-11-20 23:54:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-20 23:54:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-20 23:54:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-20 23:54:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-20 23:54:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:54:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:54:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-20 23:54:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-20 23:54:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-20 23:54:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-20 23:54:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:54:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:54:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-20 23:54:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-20 23:54:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-20 23:54:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-20 23:54:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-20 23:54:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-20 23:54:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-20 23:54:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-20 23:54:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-20 23:54:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-20 23:54:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:54:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:54:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-20 23:54:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-20 23:54:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-20 23:54:19,582 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-20 23:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:54:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 23:54:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 23:54:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:54:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-20 23:54:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-20 23:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:54:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-20 23:54:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-20 23:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_task [2021-11-20 23:54:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_task [2021-11-20 23:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_features [2021-11-20 23:54:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_features [2021-11-20 23:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-20 23:54:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-20 23:54:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-20 23:54:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-20 23:54:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-20 23:54:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-20 23:54:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-20 23:54:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-20 23:54:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-20 23:54:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-20 23:54:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:54:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_6 [2021-11-20 23:54:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_6 [2021-11-20 23:54:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_watchdog [2021-11-20 23:54:19,587 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_watchdog [2021-11-20 23:54:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-20 23:54:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-20 23:54:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-20 23:54:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-20 23:54:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-20 23:54:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-20 23:54:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-11-20 23:54:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-11-20 23:54:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-20 23:54:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-20 23:54:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-20 23:54:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-20 23:54:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 23:54:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 23:54:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-20 23:54:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-20 23:54:19,590 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:54:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:54:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:54:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:54:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-20 23:54:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-20 23:54:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-20 23:54:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-20 23:54:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-20 23:54:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-20 23:54:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-20 23:54:19,592 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-20 23:54:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-20 23:54:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-20 23:54:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-20 23:54:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-20 23:54:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-20 23:54:19,593 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-20 23:54:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-20 23:54:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-20 23:54:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-20 23:54:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-20 23:54:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-20 23:54:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-20 23:54:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:54:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:54:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-20 23:54:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-20 23:54:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-20 23:54:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-20 23:54:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-20 23:54:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-20 23:54:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-20 23:54:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-20 23:54:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-20 23:54:19,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-20 23:54:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-20 23:54:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-20 23:54:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:54:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:54:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-20 23:54:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-20 23:54:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-20 23:54:19,597 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-20 23:54:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 23:54:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 23:54:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:54:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:54:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-20 23:54:19,598 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-20 23:54:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-20 23:54:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-20 23:54:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:54:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_82547_tx_fifo_stall_task [2021-11-20 23:54:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_82547_tx_fifo_stall_task [2021-11-20 23:54:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs___0 [2021-11-20 23:54:19,599 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs___0 [2021-11-20 23:54:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-11-20 23:54:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-11-20 23:54:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-20 23:54:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-20 23:54:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:54:19,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:54:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-20 23:54:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-20 23:54:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-20 23:54:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-20 23:54:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-20 23:54:19,601 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-20 23:54:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:54:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:54:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-20 23:54:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-20 23:54:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-20 23:54:19,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-20 23:54:19,602 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 23:54:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 23:54:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-20 23:54:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-20 23:54:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2021-11-20 23:54:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2021-11-20 23:54:19,603 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-20 23:54:19,603 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-20 23:54:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_error_detected [2021-11-20 23:54:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_error_detected [2021-11-20 23:54:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:54:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:54:19,604 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-20 23:54:19,604 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-20 23:54:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-20 23:54:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-20 23:54:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-20 23:54:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-20 23:54:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-20 23:54:19,605 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-20 23:54:19,605 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-20 23:54:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-20 23:54:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs___0 [2021-11-20 23:54:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs___0 [2021-11-20 23:54:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2021-11-20 23:54:19,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2021-11-20 23:54:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-20 23:54:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-20 23:54:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2021-11-20 23:54:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2021-11-20 23:54:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-20 23:54:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-20 23:54:19,607 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-20 23:54:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-20 23:54:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-20 23:54:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-20 23:54:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 23:54:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 23:54:19,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-20 23:54:19,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-20 23:54:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:54:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:54:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-20 23:54:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-20 23:54:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-20 23:54:19,609 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-20 23:54:19,609 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:54:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:54:19,610 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-20 23:54:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-20 23:54:19,610 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-20 23:54:19,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-20 23:54:19,610 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-20 23:54:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-20 23:54:19,611 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_ioctl [2021-11-20 23:54:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_ioctl [2021-11-20 23:54:19,611 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:54:19,611 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:54:19,611 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_mac [2021-11-20 23:54:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_mac [2021-11-20 23:54:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:54:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-20 23:54:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-20 23:54:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-20 23:54:19,612 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-20 23:54:19,612 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:54:19,613 INFO L130 BoogieDeclarations]: Found specification of procedure skb_free_frag [2021-11-20 23:54:19,613 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_free_frag [2021-11-20 23:54:21,683 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:54:21,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:54:22,983 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:55:27,738 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:55:39,058 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:55:39,058 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:55:39,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:55:39 BoogieIcfgContainer [2021-11-20 23:55:39,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:55:39,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:55:39,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:55:39,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:55:39,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:54:05" (1/3) ... [2021-11-20 23:55:39,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef8984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:55:39, skipping insertion in model container [2021-11-20 23:55:39,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:54:16" (2/3) ... [2021-11-20 23:55:39,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef8984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:55:39, skipping insertion in model container [2021-11-20 23:55:39,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:55:39" (3/3) ... [2021-11-20 23:55:39,076 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ethernet--intel--e1000--e1000.ko-entry_point.cil.out.i [2021-11-20 23:55:39,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:55:39,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:55:39,152 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:55:39,159 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 [2021-11-20 23:55:39,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:55:39,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 6446 states, 4098 states have (on average 1.3387018057589068) internal successors, (5486), 4195 states have internal predecessors, (5486), 2095 states have call successors, (2095), 254 states have call predecessors, (2095), 253 states have return successors, (2085), 2079 states have call predecessors, (2085), 2085 states have call successors, (2085) [2021-11-20 23:55:39,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 23:55:39,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:55:39,310 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:55:39,311 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:55:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:55:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1947453057, now seen corresponding path program 1 times [2021-11-20 23:55:39,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:55:39,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216217258] [2021-11-20 23:55:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:55:39,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:55:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:55:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2021-11-20 23:55:40,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:55:40,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216217258] [2021-11-20 23:55:40,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216217258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:55:40,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:55:40,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:55:40,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405300504] [2021-11-20 23:55:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:55:40,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:55:40,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:55:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:55:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:55:40,680 INFO L87 Difference]: Start difference. First operand has 6446 states, 4098 states have (on average 1.3387018057589068) internal successors, (5486), 4195 states have internal predecessors, (5486), 2095 states have call successors, (2095), 254 states have call predecessors, (2095), 253 states have return successors, (2085), 2079 states have call predecessors, (2085), 2085 states have call successors, (2085) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-20 23:55:42,982 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:55:45,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:55:49,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:55:52,923 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:55:56,975 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:03,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:05,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:10,957 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 [] [2021-11-20 23:56:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:11,243 INFO L93 Difference]: Finished difference Result 19065 states and 28693 transitions. [2021-11-20 23:56:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:56:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 156 [2021-11-20 23:56:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:11,426 INFO L225 Difference]: With dead ends: 19065 [2021-11-20 23:56:11,427 INFO L226 Difference]: Without dead ends: 12599 [2021-11-20 23:56:11,513 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 [2021-11-20 23:56:11,516 INFO L933 BasicCegarLoop]: 11011 mSDtfsCounter, 9278 mSDsluCounter, 9630 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9289 SdHoareTripleChecker+Valid, 19854 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:11,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9289 Valid, 19854 Invalid, 1612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1601 Invalid, 8 Unknown, 0 Unchecked, 29.6s Time] [2021-11-20 23:56:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12599 states. [2021-11-20 23:56:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12599 to 12561. [2021-11-20 23:56:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12561 states, 7969 states have (on average 1.3324131007654663) internal successors, (10618), 8137 states have internal predecessors, (10618), 4093 states have call successors, (4093), 500 states have call predecessors, (4093), 498 states have return successors, (4100), 4077 states have call predecessors, (4100), 4092 states have call successors, (4100) [2021-11-20 23:56:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12561 states to 12561 states and 18811 transitions. [2021-11-20 23:56:13,040 INFO L78 Accepts]: Start accepts. Automaton has 12561 states and 18811 transitions. Word has length 156 [2021-11-20 23:56:13,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:13,041 INFO L470 AbstractCegarLoop]: Abstraction has 12561 states and 18811 transitions. [2021-11-20 23:56:13,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-20 23:56:13,042 INFO L276 IsEmpty]: Start isEmpty. Operand 12561 states and 18811 transitions. [2021-11-20 23:56:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-20 23:56:13,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:13,050 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:13,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:56:13,051 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:56:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:13,052 INFO L85 PathProgramCache]: Analyzing trace with hash 206284612, now seen corresponding path program 1 times [2021-11-20 23:56:13,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:56:13,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027077479] [2021-11-20 23:56:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:13,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:56:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2021-11-20 23:56:13,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:56:13,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027077479] [2021-11-20 23:56:13,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027077479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:56:13,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:56:13,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:56:13,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925002169] [2021-11-20 23:56:13,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:56:13,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:56:13,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:56:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:56:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:56:13,965 INFO L87 Difference]: Start difference. First operand 12561 states and 18811 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:56:16,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:18,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:56:23,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:26,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:29,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:33,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:35,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:37,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:44,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:46,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:56:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:56:47,469 INFO L93 Difference]: Finished difference Result 24791 states and 37127 transitions. [2021-11-20 23:56:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:56:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2021-11-20 23:56:47,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:56:47,686 INFO L225 Difference]: With dead ends: 24791 [2021-11-20 23:56:47,686 INFO L226 Difference]: Without dead ends: 24786 [2021-11-20 23:56:47,702 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 [2021-11-20 23:56:47,703 INFO L933 BasicCegarLoop]: 10823 mSDtfsCounter, 9184 mSDsluCounter, 9549 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9192 SdHoareTripleChecker+Valid, 19585 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:56:47,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9192 Valid, 19585 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1578 Invalid, 8 Unknown, 0 Unchecked, 32.7s Time] [2021-11-20 23:56:47,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24786 states. [2021-11-20 23:56:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24786 to 24747. [2021-11-20 23:56:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24747 states, 15682 states have (on average 1.332355566891978) internal successors, (20894), 16022 states have internal predecessors, (20894), 8077 states have call successors, (8077), 990 states have call predecessors, (8077), 987 states have return successors, (8100), 8042 states have call predecessors, (8100), 8076 states have call successors, (8100) [2021-11-20 23:56:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24747 states to 24747 states and 37071 transitions. [2021-11-20 23:56:49,692 INFO L78 Accepts]: Start accepts. Automaton has 24747 states and 37071 transitions. Word has length 170 [2021-11-20 23:56:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:56:49,693 INFO L470 AbstractCegarLoop]: Abstraction has 24747 states and 37071 transitions. [2021-11-20 23:56:49,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-20 23:56:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 24747 states and 37071 transitions. [2021-11-20 23:56:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2021-11-20 23:56:49,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:56:49,895 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:56:49,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:56:49,896 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:56:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:56:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -635196666, now seen corresponding path program 1 times [2021-11-20 23:56:49,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:56:49,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284902718] [2021-11-20 23:56:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:49,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:56:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:51,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:56:51,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284902718] [2021-11-20 23:56:51,235 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 23:56:51,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643144720] [2021-11-20 23:56:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:56:51,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:56:51,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:56:51,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:56:51,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:56:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:56:55,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 15850 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:56:55,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:56:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2021-11-20 23:56:56,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:56:56,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643144720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:56:56,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:56:56,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:56:56,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350343374] [2021-11-20 23:56:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:56:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:56:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:56:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:56:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:56:56,833 INFO L87 Difference]: Start difference. First operand 24747 states and 37071 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2021-11-20 23:56:59,033 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 [] [2021-11-20 23:57:01,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:57:06,248 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:08,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:11,623 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:15,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:22,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:24,392 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 [] [2021-11-20 23:57:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:57:26,001 INFO L93 Difference]: Finished difference Result 49465 states and 74356 transitions. [2021-11-20 23:57:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:57:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) Word has length 532 [2021-11-20 23:57:26,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:57:26,161 INFO L225 Difference]: With dead ends: 49465 [2021-11-20 23:57:26,161 INFO L226 Difference]: Without dead ends: 24747 [2021-11-20 23:57:26,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:57:26,342 INFO L933 BasicCegarLoop]: 8802 mSDtfsCounter, 43 mSDsluCounter, 9525 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 17544 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:57:26,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 17544 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1575 Invalid, 7 Unknown, 0 Unchecked, 28.2s Time] [2021-11-20 23:57:26,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24747 states. [2021-11-20 23:57:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24747 to 24747. [2021-11-20 23:57:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24747 states, 15682 states have (on average 1.3321004973855375) internal successors, (20890), 16022 states have internal predecessors, (20890), 8077 states have call successors, (8077), 990 states have call predecessors, (8077), 987 states have return successors, (8100), 8042 states have call predecessors, (8100), 8076 states have call successors, (8100) [2021-11-20 23:57:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24747 states to 24747 states and 37067 transitions. [2021-11-20 23:57:28,267 INFO L78 Accepts]: Start accepts. Automaton has 24747 states and 37067 transitions. Word has length 532 [2021-11-20 23:57:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:57:28,273 INFO L470 AbstractCegarLoop]: Abstraction has 24747 states and 37067 transitions. [2021-11-20 23:57:28,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 2 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (81), 2 states have call predecessors, (81), 2 states have call successors, (81) [2021-11-20 23:57:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 24747 states and 37067 transitions. [2021-11-20 23:57:28,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2021-11-20 23:57:28,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:57:28,404 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:57:28,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:57:28,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:57:28,619 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:57:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:57:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash 51309302, now seen corresponding path program 1 times [2021-11-20 23:57:28,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:57:28,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130262090] [2021-11-20 23:57:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:28,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:57:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:29,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:57:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130262090] [2021-11-20 23:57:29,823 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 23:57:29,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120989894] [2021-11-20 23:57:29,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:57:29,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:57:29,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:57:29,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:57:29,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:57:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:57:33,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 15917 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:57:33,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:57:35,873 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2021-11-20 23:57:35,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:57:35,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120989894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:57:35,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:57:35,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:57:35,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434510675] [2021-11-20 23:57:35,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:57:35,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:57:35,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:57:35,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:57:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:57:35,877 INFO L87 Difference]: Start difference. First operand 24747 states and 37067 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 3 states have call successors, (84), 3 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2021-11-20 23:57:38,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:40,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:57:43,834 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:46,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:49,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:56,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:57:58,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:00,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:01,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:05,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:08,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:08,734 INFO L93 Difference]: Finished difference Result 43188 states and 64697 transitions. [2021-11-20 23:58:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:58:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 3 states have call successors, (84), 3 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 537 [2021-11-20 23:58:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:09,071 INFO L225 Difference]: With dead ends: 43188 [2021-11-20 23:58:09,071 INFO L226 Difference]: Without dead ends: 43183 [2021-11-20 23:58:09,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:09,104 INFO L933 BasicCegarLoop]: 10846 mSDtfsCounter, 9029 mSDsluCounter, 9576 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9037 SdHoareTripleChecker+Valid, 19639 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:09,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9037 Valid, 19639 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1586 Invalid, 9 Unknown, 0 Unchecked, 31.8s Time] [2021-11-20 23:58:09,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43183 states. [2021-11-20 23:58:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43183 to 43178. [2021-11-20 23:58:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43178 states, 27370 states have (on average 1.3327731092436974) internal successors, (36478), 27967 states have internal predecessors, (36478), 14081 states have call successors, (14081), 1730 states have call predecessors, (14081), 1726 states have return successors, (14128), 14019 states have call predecessors, (14128), 14080 states have call successors, (14128) [2021-11-20 23:58:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43178 states to 43178 states and 64687 transitions. [2021-11-20 23:58:12,452 INFO L78 Accepts]: Start accepts. Automaton has 43178 states and 64687 transitions. Word has length 537 [2021-11-20 23:58:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:58:12,453 INFO L470 AbstractCegarLoop]: Abstraction has 43178 states and 64687 transitions. [2021-11-20 23:58:12,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 3 states have call successors, (84), 3 states have call predecessors, (84), 2 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2021-11-20 23:58:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 43178 states and 64687 transitions. [2021-11-20 23:58:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2021-11-20 23:58:12,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:58:12,617 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:58:12,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:58:12,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:58:12,831 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:58:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:58:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1085492942, now seen corresponding path program 1 times [2021-11-20 23:58:12,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:58:12,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610790625] [2021-11-20 23:58:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:12,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:58:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:13,911 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:58:13,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610790625] [2021-11-20 23:58:13,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 23:58:13,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999448815] [2021-11-20 23:58:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:58:13,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:58:13,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:58:13,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:58:13,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:58:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:58:17,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 16031 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:58:17,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:58:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2021-11-20 23:58:19,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:58:19,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999448815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:58:19,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:58:19,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:58:19,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903998470] [2021-11-20 23:58:19,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:58:19,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:58:19,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:58:19,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:58:19,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:19,123 INFO L87 Difference]: Start difference. First operand 43178 states and 64687 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2021-11-20 23:58:21,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:24,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:58:28,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:30,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:34,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:37,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:39,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:41,282 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:44,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:50,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:52,448 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:56,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:58:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:58:57,889 INFO L93 Difference]: Finished difference Result 126106 states and 188880 transitions. [2021-11-20 23:58:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:58:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) Word has length 547 [2021-11-20 23:58:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:58:58,704 INFO L225 Difference]: With dead ends: 126106 [2021-11-20 23:58:58,705 INFO L226 Difference]: Without dead ends: 82957 [2021-11-20 23:58:58,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:58:58,998 INFO L933 BasicCegarLoop]: 13322 mSDtfsCounter, 8480 mSDsluCounter, 9541 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 17 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8488 SdHoareTripleChecker+Valid, 22086 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:58:58,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8488 Valid, 22086 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1901 Invalid, 10 Unknown, 0 Unchecked, 36.1s Time] [2021-11-20 23:58:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82957 states. [2021-11-20 23:59:04,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82957 to 82946. [2021-11-20 23:59:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82946 states, 52549 states have (on average 1.3305676606595749) internal successors, (69920), 53706 states have internal predecessors, (69920), 27049 states have call successors, (27049), 3354 states have call predecessors, (27049), 3347 states have return successors, (27152), 26928 states have call predecessors, (27152), 27048 states have call successors, (27152) [2021-11-20 23:59:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82946 states to 82946 states and 124121 transitions. [2021-11-20 23:59:05,663 INFO L78 Accepts]: Start accepts. Automaton has 82946 states and 124121 transitions. Word has length 547 [2021-11-20 23:59:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:05,677 INFO L470 AbstractCegarLoop]: Abstraction has 82946 states and 124121 transitions. [2021-11-20 23:59:05,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 2 states have call successors, (86), 2 states have call predecessors, (86), 2 states have return successors, (85), 2 states have call predecessors, (85), 2 states have call successors, (85) [2021-11-20 23:59:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 82946 states and 124121 transitions. [2021-11-20 23:59:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-20 23:59:05,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:05,914 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:05,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:06,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:06,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:06,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash -864038739, now seen corresponding path program 1 times [2021-11-20 23:59:06,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:06,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866811386] [2021-11-20 23:59:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:06,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:06,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:06,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866811386] [2021-11-20 23:59:06,953 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 23:59:06,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791863838] [2021-11-20 23:59:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:06,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:06,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:06,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:59:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:10,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 16200 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:59:10,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2021-11-20 23:59:11,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:11,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791863838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:11,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:11,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:59:11,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719154203] [2021-11-20 23:59:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:11,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:59:11,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:11,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:59:11,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:11,909 INFO L87 Difference]: Start difference. First operand 82946 states and 124121 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-20 23:59:14,127 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:16,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:59:22,138 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:25,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:31,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:35,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:37,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:59:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:44,090 INFO L93 Difference]: Finished difference Result 141366 states and 212784 transitions. [2021-11-20 23:59:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:59:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 575 [2021-11-20 23:59:44,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:44,744 INFO L225 Difference]: With dead ends: 141366 [2021-11-20 23:59:44,744 INFO L226 Difference]: Without dead ends: 93768 [2021-11-20 23:59:44,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:44,974 INFO L933 BasicCegarLoop]: 10933 mSDtfsCounter, 1381 mSDsluCounter, 10064 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1866 SdHoareTripleChecker+Valid, 20212 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:44,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1866 Valid, 20212 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1799 Invalid, 7 Unknown, 0 Unchecked, 29.2s Time] [2021-11-20 23:59:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93768 states. [2021-11-20 23:59:50,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93768 to 82956. [2021-11-20 23:59:50,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82956 states, 52557 states have (on average 1.3305553969975454) internal successors, (69930), 53714 states have internal predecessors, (69930), 27051 states have call successors, (27051), 3354 states have call predecessors, (27051), 3347 states have return successors, (27154), 26930 states have call predecessors, (27154), 27050 states have call successors, (27154) [2021-11-20 23:59:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82956 states to 82956 states and 124135 transitions. [2021-11-20 23:59:51,855 INFO L78 Accepts]: Start accepts. Automaton has 82956 states and 124135 transitions. Word has length 575 [2021-11-20 23:59:51,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:51,856 INFO L470 AbstractCegarLoop]: Abstraction has 82956 states and 124135 transitions. [2021-11-20 23:59:51,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 3 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-20 23:59:51,857 INFO L276 IsEmpty]: Start isEmpty. Operand 82956 states and 124135 transitions. [2021-11-20 23:59:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-11-20 23:59:52,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:52,133 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:52,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:52,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:52,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1857453454, now seen corresponding path program 1 times [2021-11-20 23:59:52,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:52,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207610573] [2021-11-20 23:59:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:52,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:53,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207610573] [2021-11-20 23:59:53,358 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-20 23:59:53,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144917324] [2021-11-20 23:59:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:53,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:53,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:53,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:59:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:57,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 16411 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:59:57,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-20 23:59:59,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:59,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144917324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:59,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:59,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:59:59,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568936343] [2021-11-20 23:59:59,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:59,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:59:59,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:59:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:59:59,004 INFO L87 Difference]: Start difference. First operand 82956 states and 124135 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2021-11-21 00:00:01,209 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 00:00:05,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:08,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:12,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:00:18,119 WARN L515 Checker$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 00:00:26,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:28,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:34,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:35,353 INFO L93 Difference]: Finished difference Result 172777 states and 258365 transitions. [2021-11-21 00:00:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:35,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 609 [2021-11-21 00:00:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:36,326 INFO L225 Difference]: With dead ends: 172777 [2021-11-21 00:00:36,327 INFO L226 Difference]: Without dead ends: 89850 [2021-11-21 00:00:36,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 607 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 00:00:36,718 INFO L933 BasicCegarLoop]: 16861 mSDtfsCounter, 9281 mSDsluCounter, 9564 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9288 SdHoareTripleChecker+Valid, 25638 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:36,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9288 Valid, 25638 Invalid, 2258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2250 Invalid, 8 Unknown, 0 Unchecked, 33.0s Time] [2021-11-21 00:00:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89850 states. [2021-11-21 00:00:42,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89850 to 89741. [2021-11-21 00:00:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89741 states, 56791 states have (on average 1.3289077494673451) internal successors, (75470), 58031 states have internal predecessors, (75470), 29282 states have call successors, (29282), 3679 states have call predecessors, (29282), 3667 states have return successors, (29389), 29149 states have call predecessors, (29389), 29281 states have call successors, (29389) [2021-11-21 00:00:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89741 states to 89741 states and 134141 transitions. [2021-11-21 00:00:43,910 INFO L78 Accepts]: Start accepts. Automaton has 89741 states and 134141 transitions. Word has length 609 [2021-11-21 00:00:43,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:43,911 INFO L470 AbstractCegarLoop]: Abstraction has 89741 states and 134141 transitions. [2021-11-21 00:00:43,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2021-11-21 00:00:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 89741 states and 134141 transitions. [2021-11-21 00:00:44,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2021-11-21 00:00:44,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:44,146 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:44,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 00:00:44,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:44,347 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:00:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1371593347, now seen corresponding path program 1 times [2021-11-21 00:00:44,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:44,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201498609] [2021-11-21 00:00:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:44,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:44,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:00:44,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718093774] [2021-11-21 00:00:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:44,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:44,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:00:44,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:00:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:49,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 16778 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:00:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:00:52,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2021-11-21 00:00:52,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:00:52,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201498609] [2021-11-21 00:00:52,497 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:00:52,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718093774] [2021-11-21 00:00:52,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718093774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:52,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:52,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:00:52,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153115595] [2021-11-21 00:00:52,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:52,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:52,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:52,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:52,501 INFO L87 Difference]: Start difference. First operand 89741 states and 134141 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2021-11-21 00:00:54,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:00:57,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:01:00,219 WARN L515 Checker$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 00:01:02,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:04,756 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:08,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:12,096 WARN L515 Checker$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 00:01:14,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:17,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:01:25,897 INFO L93 Difference]: Finished difference Result 137205 states and 205177 transitions. [2021-11-21 00:01:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:01:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 689 [2021-11-21 00:01:25,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:01:27,139 INFO L225 Difference]: With dead ends: 137205 [2021-11-21 00:01:27,139 INFO L226 Difference]: Without dead ends: 137200 [2021-11-21 00:01:27,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 687 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 00:01:27,211 INFO L933 BasicCegarLoop]: 10848 mSDtfsCounter, 9007 mSDsluCounter, 9547 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9015 SdHoareTripleChecker+Valid, 19609 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:01:27,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9015 Valid, 19609 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1576 Invalid, 8 Unknown, 0 Unchecked, 30.1s Time] [2021-11-21 00:01:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137200 states. [2021-11-21 00:01:37,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137200 to 125833. [2021-11-21 00:01:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125833 states, 79679 states have (on average 1.329861067533478) internal successors, (105962), 81421 states have internal predecessors, (105962), 41032 states have call successors, (41032), 5136 states have call predecessors, (41032), 5121 states have return successors, (41187), 40846 states have call predecessors, (41187), 41031 states have call successors, (41187) [2021-11-21 00:01:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125833 states to 125833 states and 188181 transitions. [2021-11-21 00:01:39,239 INFO L78 Accepts]: Start accepts. Automaton has 125833 states and 188181 transitions. Word has length 689 [2021-11-21 00:01:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:01:39,240 INFO L470 AbstractCegarLoop]: Abstraction has 125833 states and 188181 transitions. [2021-11-21 00:01:39,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 2 states have internal predecessors, (268), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2021-11-21 00:01:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 125833 states and 188181 transitions. [2021-11-21 00:01:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2021-11-21 00:01:40,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:01:40,212 INFO L514 BasicCegarLoop]: trace histogram [31, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 14, 14, 14, 14, 14, 14, 14, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:01:40,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:01:40,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:01:40,413 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:01:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:01:40,414 INFO L85 PathProgramCache]: Analyzing trace with hash 146127824, now seen corresponding path program 1 times [2021-11-21 00:01:40,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:01:40,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884366331] [2021-11-21 00:01:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:40,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:01:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:41,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:01:41,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884366331] [2021-11-21 00:01:41,537 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-21 00:01:41,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138380490] [2021-11-21 00:01:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:01:41,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:01:41,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:01:41,540 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:01:41,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f4bcb43-5d47-4581-ae48-3db83eb96974/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:01:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:01:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 19237 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:01:46,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:01:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 961 proven. 0 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2021-11-21 00:01:49,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:01:49,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138380490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:01:49,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:01:49,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:01:49,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569693257] [2021-11-21 00:01:49,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:01:49,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:01:49,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:01:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:01:49,139 INFO L87 Difference]: Start difference. First operand 125833 states and 188181 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 2 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-21 00:01:51,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:01:54,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:01:57,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:00,674 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:04,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:09,547 WARN L515 Checker$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 00:02:15,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:17,102 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:20,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:02:22,338 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []