./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.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_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/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_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/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_10b11806-865f-425d-9321-1ba68019ea4c/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 e282dee958ab2234ea07036ebd12b370ba9c340bf289a9a8f423d22b133c3ff1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:04:46,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:04:46,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:04:46,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:04:46,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:04:46,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:04:46,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:04:46,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:04:46,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:04:46,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:04:46,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:04:46,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:04:46,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:04:46,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:04:46,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:04:46,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:04:46,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:04:46,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:04:46,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:04:46,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:04:46,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:04:46,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:04:46,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:04:46,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:04:46,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:04:46,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:04:46,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:04:46,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:04:46,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:04:46,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:04:46,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:04:46,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:04:46,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:04:46,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:04:46,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:04:46,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:04:46,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:04:46,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:04:46,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:04:46,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:04:46,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:04:46,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:04:46,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:04:46,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:04:46,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:04:46,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:04:46,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:04:46,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:04:46,625 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:04:46,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:04:46,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:04:46,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:04:46,626 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:04:46,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:04:46,626 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:04:46,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:04:46,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:04:46,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:04:46,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:04:46,628 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:04:46,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:04:46,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:04:46,629 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:04:46,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:04:46,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:04:46,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:04:46,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:04:46,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:04:46,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:04:46,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:04:46,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:04:46,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:04:46,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:04:46,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:04:46,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:04:46,633 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:04:46,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:04:46,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:04:46,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:04:46,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:04:46,634 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_10b11806-865f-425d-9321-1ba68019ea4c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e282dee958ab2234ea07036ebd12b370ba9c340bf289a9a8f423d22b133c3ff1 [2021-11-21 00:04:46,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:04:46,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:04:46,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:04:46,974 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:04:46,975 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:04:46,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 00:04:47,056 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/data/08aa7276d/b4af2a607f0c42cb8c35897fc700d855/FLAGa602fc9b3 [2021-11-21 00:04:48,499 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:04:48,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 00:04:48,623 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/data/08aa7276d/b4af2a607f0c42cb8c35897fc700d855/FLAGa602fc9b3 [2021-11-21 00:04:48,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/data/08aa7276d/b4af2a607f0c42cb8c35897fc700d855 [2021-11-21 00:04:48,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:04:48,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:04:48,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:48,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:04:48,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:04:48,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:48" (1/1) ... [2021-11-21 00:04:48,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c21b559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:48, skipping insertion in model container [2021-11-21 00:04:48,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:48" (1/1) ... [2021-11-21 00:04:48,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:04:49,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:05:00,882 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_10b11806-865f-425d-9321-1ba68019ea4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[899059,899072] [2021-11-21 00:05:00,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:05:01,057 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:05:02,304 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_10b11806-865f-425d-9321-1ba68019ea4c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[899059,899072] [2021-11-21 00:05:02,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:05:02,928 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:05:02,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02 WrapperNode [2021-11-21 00:05:02,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:05:02,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:05:02,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:05:02,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:05:02,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:03,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:04,226 INFO L137 Inliner]: procedures = 711, calls = 16186, calls flagged for inlining = 397, calls inlined = 350, statements flattened = 28818 [2021-11-21 00:05:04,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:05:04,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:05:04,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:05:04,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:05:04,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:04,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:04,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:04,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:05,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:05,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:05,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:05,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:05:05,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:05:05,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:05:05,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:05:05,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (1/1) ... [2021-11-21 00:05:05,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:05:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:05:05,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:05:06,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:05:06,150 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:05:06,150 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:05:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-21 00:05:06,151 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-21 00:05:06,151 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 00:05:06,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 00:05:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-21 00:05:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-21 00:05:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-21 00:05:06,152 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-21 00:05:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-21 00:05:06,153 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-21 00:05:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-21 00:05:06,153 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-21 00:05:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:05:06,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:05:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-21 00:05:06,154 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-21 00:05:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 00:05:06,155 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 00:05:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:05:06,155 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:05:06,155 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 00:05:06,156 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 00:05:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-21 00:05:06,156 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-21 00:05:06,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:05:06,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:05:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-21 00:05:06,157 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-21 00:05:06,157 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-21 00:05:06,157 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-21 00:05:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-21 00:05:06,158 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-21 00:05:06,158 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:05:06,158 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:05:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-21 00:05:06,159 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-21 00:05:06,159 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 00:05:06,159 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 00:05:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-21 00:05:06,160 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-21 00:05:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:05:06,161 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:05:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-21 00:05:06,161 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-21 00:05:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:05:06,162 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:05:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:05:06,162 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:05:06,162 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-21 00:05:06,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-21 00:05:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-21 00:05:06,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-21 00:05:06,163 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:05:06,163 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:05:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-21 00:05:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-21 00:05:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-21 00:05:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-21 00:05:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:05:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:05:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-21 00:05:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-21 00:05:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-21 00:05:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-21 00:05:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-21 00:05:06,166 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-21 00:05:06,166 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-21 00:05:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-21 00:05:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:05:06,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:05:06,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:05:06,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:05:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:05:06,168 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:05:06,168 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:05:06,169 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:05:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:05:06,169 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:05:06,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:05:06,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:05:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:05:06,170 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:05:06,170 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 00:05:06,170 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 00:05:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:05:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 00:05:06,171 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 00:05:06,171 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-21 00:05:06,172 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-21 00:05:06,172 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-21 00:05:06,172 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-21 00:05:06,172 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-21 00:05:06,172 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-21 00:05:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-21 00:05:06,173 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-21 00:05:06,173 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:05:06,173 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:05:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-21 00:05:06,174 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-21 00:05:06,174 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:05:06,174 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:05:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-21 00:05:06,175 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-21 00:05:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-21 00:05:06,175 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-21 00:05:06,175 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-21 00:05:06,176 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-21 00:05:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:05:06,176 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:05:06,176 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:05:06,177 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:05:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-21 00:05:06,177 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-21 00:05:06,177 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-21 00:05:06,178 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-21 00:05:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:05:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 00:05:06,178 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 00:05:06,178 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-21 00:05:06,179 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-21 00:05:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-21 00:05:06,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-21 00:05:06,179 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-21 00:05:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-21 00:05:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:05:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:05:06,180 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-21 00:05:06,180 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-21 00:05:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:05:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:05:06,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:05:06,181 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-21 00:05:06,182 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-21 00:05:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:05:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:05:06,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:05:06,182 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-21 00:05:06,183 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-21 00:05:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-21 00:05:06,183 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-21 00:05:06,183 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-21 00:05:06,183 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-21 00:05:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:05:06,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:05:06,184 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-21 00:05:06,184 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-21 00:05:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-21 00:05:06,185 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-21 00:05:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:05:06,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:05:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-21 00:05:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-21 00:05:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 00:05:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 00:05:06,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:05:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:05:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-21 00:05:06,187 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-21 00:05:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:05:06,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:05:06,187 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-21 00:05:06,188 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-21 00:05:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-21 00:05:06,188 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-21 00:05:06,188 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-21 00:05:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-21 00:05:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:05:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:05:06,189 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-21 00:05:06,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-21 00:05:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-21 00:05:06,190 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-21 00:05:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-21 00:05:06,190 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-21 00:05:06,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-21 00:05:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-21 00:05:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-21 00:05:06,191 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-21 00:05:06,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:05:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:05:06,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:05:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:05:06,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:05:06,192 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-21 00:05:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-21 00:05:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-21 00:05:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-21 00:05:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:05:06,193 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 00:05:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 00:05:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:05:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:05:06,194 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:05:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:05:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:05:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-21 00:05:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-21 00:05:06,195 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:05:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 00:05:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 00:05:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:05:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:05:06,196 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-21 00:05:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-21 00:05:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-21 00:05:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-21 00:05:06,197 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-21 00:05:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-21 00:05:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-21 00:05:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-21 00:05:06,198 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:05:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:05:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-21 00:05:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-21 00:05:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-21 00:05:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-21 00:05:06,199 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-21 00:05:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-21 00:05:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:05:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:05:06,200 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 00:05:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 00:05:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:05:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:05:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-21 00:05:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-21 00:05:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:05:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:05:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-21 00:05:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-21 00:05:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-21 00:05:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-21 00:05:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:05:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:05:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-21 00:05:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-21 00:05:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-21 00:05:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-21 00:05:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-21 00:05:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-21 00:05:06,204 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 00:05:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 00:05:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-21 00:05:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-21 00:05:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-21 00:05:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-21 00:05:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-21 00:05:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-21 00:05:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:05:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:05:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:05:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:05:06,207 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-21 00:05:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-21 00:05:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-21 00:05:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-21 00:05:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-21 00:05:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-21 00:05:06,208 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-21 00:05:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-21 00:05:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:05:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:05:06,209 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-21 00:05:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-21 00:05:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 00:05:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 00:05:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-21 00:05:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-21 00:05:06,210 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-21 00:05:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-21 00:05:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-21 00:05:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-21 00:05:06,211 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:05:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:05:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-21 00:05:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-21 00:05:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:05:06,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:05:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:05:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:05:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 00:05:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 00:05:06,213 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:05:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:05:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 00:05:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 00:05:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-21 00:05:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-21 00:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:05:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:05:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 00:05:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 00:05:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:05:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:05:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-21 00:05:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-21 00:05:06,216 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 00:05:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 00:05:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 00:05:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 00:05:06,217 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-21 00:05:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-21 00:05:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:05:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:05:06,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:05:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:05:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-21 00:05:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-21 00:05:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-21 00:05:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-21 00:05:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-21 00:05:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-21 00:05:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-21 00:05:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-21 00:05:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:05:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:05:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-21 00:05:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-21 00:05:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-21 00:05:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-21 00:05:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-21 00:05:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-21 00:05:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 00:05:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 00:05:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-21 00:05:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-21 00:05:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-21 00:05:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-21 00:05:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 00:05:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 00:05:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:05:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:05:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 00:05:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 00:05:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 00:05:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 00:05:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:05:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:05:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:05:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 00:05:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 00:05:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:05:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:05:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-21 00:05:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-21 00:05:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:05:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 00:05:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 00:05:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 00:05:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 00:05:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-21 00:05:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-21 00:05:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-21 00:05:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-21 00:05:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-21 00:05:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-21 00:05:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-21 00:05:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-21 00:05:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:05:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-21 00:05:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-21 00:05:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-21 00:05:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-21 00:05:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-21 00:05:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-21 00:05:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 00:05:06,231 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 00:05:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-21 00:05:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-21 00:05:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:05:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:05:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-21 00:05:06,232 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-21 00:05:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:05:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:05:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 00:05:06,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 00:05:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:05:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:05:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:05:06,234 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:05:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-21 00:05:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-21 00:05:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:05:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:05:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-21 00:05:06,235 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-21 00:05:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-21 00:05:06,236 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-21 00:05:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-21 00:05:06,236 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-21 00:05:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-21 00:05:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-21 00:05:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-21 00:05:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-21 00:05:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-21 00:05:06,237 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-21 00:05:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-21 00:05:06,238 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-21 00:05:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-21 00:05:06,238 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-21 00:05:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 00:05:06,239 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 00:05:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:05:06,239 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:05:06,239 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:05:06,239 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:05:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-21 00:05:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-21 00:05:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-21 00:05:06,240 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-21 00:05:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-21 00:05:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-21 00:05:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-21 00:05:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-21 00:05:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-21 00:05:06,241 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-21 00:05:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 00:05:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 00:05:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:05:06,242 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:05:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-21 00:05:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-21 00:05:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 00:05:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 00:05:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-21 00:05:06,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-21 00:05:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:05:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:05:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-21 00:05:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-21 00:05:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-21 00:05:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-21 00:05:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:05:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-21 00:05:06,245 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-21 00:05:06,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:05:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:05:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-21 00:05:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-21 00:05:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-21 00:05:06,246 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-21 00:05:06,246 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-21 00:05:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-21 00:05:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:05:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:05:06,247 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-21 00:05:06,247 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-21 00:05:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 00:05:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 00:05:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-21 00:05:06,248 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-21 00:05:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-21 00:05:06,249 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-21 00:05:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:05:06,249 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:05:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-21 00:05:06,249 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-21 00:05:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-21 00:05:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-21 00:05:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-21 00:05:06,250 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-21 00:05:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 00:05:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 00:05:06,251 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 00:05:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 00:05:06,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_10 [2021-11-21 00:05:06,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_10 [2021-11-21 00:05:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-21 00:05:06,252 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-21 00:05:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-21 00:05:06,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-21 00:05:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-21 00:05:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-21 00:05:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:05:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:05:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:05:06,253 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:05:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:05:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:05:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 00:05:06,254 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 00:05:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-21 00:05:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-21 00:05:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-21 00:05:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-21 00:05:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:05:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:05:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-21 00:05:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-21 00:05:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:05:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:05:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-21 00:05:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-21 00:05:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2021-11-21 00:05:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_e1000_exit_module_13_2 [2021-11-21 00:05:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:05:06,257 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:05:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 00:05:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:05:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 00:05:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 00:05:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-21 00:05:06,258 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-21 00:05:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:05:06,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:05:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-21 00:05:08,746 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:05:08,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:05:10,170 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:06:17,685 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:06:18,008 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:06:26,776 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:06:26,776 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-21 00:06:26,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:26 BoogieIcfgContainer [2021-11-21 00:06:26,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:06:26,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:06:26,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:06:26,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:06:26,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:04:48" (1/3) ... [2021-11-21 00:06:26,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2778e5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:06:26, skipping insertion in model container [2021-11-21 00:06:26,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:05:02" (2/3) ... [2021-11-21 00:06:26,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2778e5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:06:26, skipping insertion in model container [2021-11-21 00:06:26,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:06:26" (3/3) ... [2021-11-21 00:06:26,801 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 00:06:26,808 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:06:26,808 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:06:26,901 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:06:26,911 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:06:26,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:06:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 6719 states, 4306 states have (on average 1.3420808174640038) internal successors, (5779), 4398 states have internal predecessors, (5779), 2170 states have call successors, (2170), 245 states have call predecessors, (2170), 244 states have return successors, (2164), 2156 states have call predecessors, (2164), 2164 states have call successors, (2164) [2021-11-21 00:06:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-21 00:06:27,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:27,102 INFO L514 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:06:27,103 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:06:27,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash 366093356, now seen corresponding path program 1 times [2021-11-21 00:06:27,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:06:27,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406792995] [2021-11-21 00:06:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:27,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:06:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2070 trivial. 0 not checked. [2021-11-21 00:06:28,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:06:28,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406792995] [2021-11-21 00:06:28,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406792995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:28,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:28,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:06:28,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075765509] [2021-11-21 00:06:28,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:28,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:06:28,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:06:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:06:28,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:06:28,994 INFO L87 Difference]: Start difference. First operand has 6719 states, 4306 states have (on average 1.3420808174640038) internal successors, (5779), 4398 states have internal predecessors, (5779), 2170 states have call successors, (2170), 245 states have call predecessors, (2170), 244 states have return successors, (2164), 2156 states have call predecessors, (2164), 2164 states have call successors, (2164) Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 00:06:39,023 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 00:06:41,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:47,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:50,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:54,156 WARN L515 Checker$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 00:06:56,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:06:58,348 WARN L515 Checker$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 00:07:00,797 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 00:07:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:01,217 INFO L93 Difference]: Finished difference Result 19497 states and 29409 transitions. [2021-11-21 00:07:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:01,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 250 [2021-11-21 00:07:01,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:01,388 INFO L225 Difference]: With dead ends: 19497 [2021-11-21 00:07:01,388 INFO L226 Difference]: Without dead ends: 12815 [2021-11-21 00:07:01,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:01,465 INFO L933 BasicCegarLoop]: 11253 mSDtfsCounter, 9192 mSDsluCounter, 10041 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9195 SdHoareTripleChecker+Valid, 20435 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:01,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9195 Valid, 20435 Invalid, 1771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1757 Invalid, 7 Unknown, 0 Unchecked, 31.0s Time] [2021-11-21 00:07:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12815 states. [2021-11-21 00:07:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12815 to 12806. [2021-11-21 00:07:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12806 states, 8169 states have (on average 1.3367609254498716) internal successors, (10920), 8349 states have internal predecessors, (10920), 4158 states have call successors, (4158), 479 states have call predecessors, (4158), 478 states have return successors, (4158), 4138 states have call predecessors, (4158), 4155 states have call successors, (4158) [2021-11-21 00:07:03,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12806 states to 12806 states and 19236 transitions. [2021-11-21 00:07:03,119 INFO L78 Accepts]: Start accepts. Automaton has 12806 states and 19236 transitions. Word has length 250 [2021-11-21 00:07:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:03,126 INFO L470 AbstractCegarLoop]: Abstraction has 12806 states and 19236 transitions. [2021-11-21 00:07:03,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 00:07:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 12806 states and 19236 transitions. [2021-11-21 00:07:03,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-21 00:07:03,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:03,150 INFO L514 BasicCegarLoop]: trace histogram [27, 23, 23, 23, 23, 23, 23, 4, 4, 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] [2021-11-21 00:07:03,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:07:03,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:07:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1486701808, now seen corresponding path program 1 times [2021-11-21 00:07:03,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:03,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925498407] [2021-11-21 00:07:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:03,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2247 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2247 trivial. 0 not checked. [2021-11-21 00:07:04,208 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925498407] [2021-11-21 00:07:04,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925498407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:04,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:04,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:07:04,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838034767] [2021-11-21 00:07:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:04,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:07:04,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:07:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:07:04,213 INFO L87 Difference]: Start difference. First operand 12806 states and 19236 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:07:08,680 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:14,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:23,904 WARN L515 Checker$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 00:07:27,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:29,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:31,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:33,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:35,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:39,603 WARN L515 Checker$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 00:07:40,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:40,056 INFO L93 Difference]: Finished difference Result 19034 states and 28573 transitions. [2021-11-21 00:07:40,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:07:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 292 [2021-11-21 00:07:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:40,266 INFO L225 Difference]: With dead ends: 19034 [2021-11-21 00:07:40,266 INFO L226 Difference]: Without dead ends: 19018 [2021-11-21 00:07:40,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:07:40,291 INFO L933 BasicCegarLoop]: 11249 mSDtfsCounter, 9318 mSDsluCounter, 22118 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9321 SdHoareTripleChecker+Valid, 31627 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:40,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9321 Valid, 31627 Invalid, 2625 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2618 Invalid, 7 Unknown, 0 Unchecked, 35.0s Time] [2021-11-21 00:07:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19018 states. [2021-11-21 00:07:41,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19018 to 19010. [2021-11-21 00:07:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19010 states, 12104 states have (on average 1.3350132187706543) internal successors, (16159), 12372 states have internal predecessors, (16159), 6188 states have call successors, (6188), 718 states have call predecessors, (6188), 717 states have return successors, (6191), 6160 states have call predecessors, (6191), 6185 states have call successors, (6191) [2021-11-21 00:07:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19010 states to 19010 states and 28538 transitions. [2021-11-21 00:07:42,094 INFO L78 Accepts]: Start accepts. Automaton has 19010 states and 28538 transitions. Word has length 292 [2021-11-21 00:07:42,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:42,095 INFO L470 AbstractCegarLoop]: Abstraction has 19010 states and 28538 transitions. [2021-11-21 00:07:42,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 00:07:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 19010 states and 28538 transitions. [2021-11-21 00:07:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2021-11-21 00:07:42,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:42,180 INFO L514 BasicCegarLoop]: trace histogram [29, 25, 25, 25, 25, 25, 25, 5, 5, 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] [2021-11-21 00:07:42,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:07:42,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:07:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:42,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2013623581, now seen corresponding path program 1 times [2021-11-21 00:07:42,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:42,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765734465] [2021-11-21 00:07:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:42,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2647 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2644 trivial. 0 not checked. [2021-11-21 00:07:43,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:43,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765734465] [2021-11-21 00:07:43,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765734465] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:43,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:43,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:43,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455130442] [2021-11-21 00:07:43,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:43,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:43,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:43,302 INFO L87 Difference]: Start difference. First operand 19010 states and 28538 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-21 00:07:49,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:53,920 WARN L515 Checker$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 00:07:57,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:01,481 WARN L515 Checker$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 00:08:03,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:05,911 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:08,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:11,030 WARN L515 Checker$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 00:08:13,248 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 00:08:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:13,603 INFO L93 Difference]: Finished difference Result 48861 states and 73370 transitions. [2021-11-21 00:08:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:08:13,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 410 [2021-11-21 00:08:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:13,858 INFO L225 Difference]: With dead ends: 48861 [2021-11-21 00:08:13,858 INFO L226 Difference]: Without dead ends: 29898 [2021-11-21 00:08:14,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:08:14,156 INFO L933 BasicCegarLoop]: 11250 mSDtfsCounter, 8529 mSDsluCounter, 10007 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 19 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8530 SdHoareTripleChecker+Valid, 20404 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:14,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8530 Valid, 20404 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1838 Invalid, 8 Unknown, 0 Unchecked, 29.3s Time] [2021-11-21 00:08:14,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29898 states. [2021-11-21 00:08:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29898 to 29888. [2021-11-21 00:08:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29888 states, 19096 states have (on average 1.332739840804357) internal successors, (25450), 19506 states have internal predecessors, (25450), 9694 states have call successors, (9694), 1099 states have call predecessors, (9694), 1097 states have return successors, (9701), 9644 states have call predecessors, (9701), 9691 states have call successors, (9701) [2021-11-21 00:08:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29888 states to 29888 states and 44845 transitions. [2021-11-21 00:08:16,646 INFO L78 Accepts]: Start accepts. Automaton has 29888 states and 44845 transitions. Word has length 410 [2021-11-21 00:08:16,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:16,648 INFO L470 AbstractCegarLoop]: Abstraction has 29888 states and 44845 transitions. [2021-11-21 00:08:16,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-21 00:08:16,648 INFO L276 IsEmpty]: Start isEmpty. Operand 29888 states and 44845 transitions. [2021-11-21 00:08:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-21 00:08:16,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:16,778 INFO L514 BasicCegarLoop]: trace histogram [32, 25, 25, 25, 25, 25, 25, 9, 9, 3, 3, 3, 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] [2021-11-21 00:08:16,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:08:16,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:08:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:16,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2142805962, now seen corresponding path program 1 times [2021-11-21 00:08:16,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:16,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448149745] [2021-11-21 00:08:16,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:16,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2921 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2021-11-21 00:08:17,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:17,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448149745] [2021-11-21 00:08:17,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448149745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:17,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:17,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:08:17,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835149276] [2021-11-21 00:08:17,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:17,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:08:17,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:08:17,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:08:17,820 INFO L87 Difference]: Start difference. First operand 29888 states and 44845 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 00:08:27,888 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:32,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:35,759 WARN L515 Checker$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 00:08:38,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:42,010 WARN L515 Checker$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 00:08:45,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:47,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:50,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:52,789 WARN L515 Checker$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 00:08:53,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:53,309 INFO L93 Difference]: Finished difference Result 65408 states and 98159 transitions. [2021-11-21 00:08:53,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:08:53,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 457 [2021-11-21 00:08:53,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:53,719 INFO L225 Difference]: With dead ends: 65408 [2021-11-21 00:08:53,719 INFO L226 Difference]: Without dead ends: 41157 [2021-11-21 00:08:53,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:08:53,858 INFO L933 BasicCegarLoop]: 16917 mSDtfsCounter, 8430 mSDsluCounter, 10005 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 15 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8433 SdHoareTripleChecker+Valid, 26069 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:53,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8433 Valid, 26069 Invalid, 2518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 2496 Invalid, 7 Unknown, 0 Unchecked, 34.4s Time] [2021-11-21 00:08:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41157 states. [2021-11-21 00:08:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41157 to 41145. [2021-11-21 00:08:56,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41145 states, 26295 states have (on average 1.332344552196235) internal successors, (35034), 26862 states have internal predecessors, (35034), 13342 states have call successors, (13342), 1510 states have call predecessors, (13342), 1507 states have return successors, (13355), 13268 states have call predecessors, (13355), 13339 states have call successors, (13355) [2021-11-21 00:08:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41145 states to 41145 states and 61731 transitions. [2021-11-21 00:08:57,086 INFO L78 Accepts]: Start accepts. Automaton has 41145 states and 61731 transitions. Word has length 457 [2021-11-21 00:08:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:57,089 INFO L470 AbstractCegarLoop]: Abstraction has 41145 states and 61731 transitions. [2021-11-21 00:08:57,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2021-11-21 00:08:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 41145 states and 61731 transitions. [2021-11-21 00:08:57,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-21 00:08:57,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:57,612 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 13, 13, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:08:57,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:08:57,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:08:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:57,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2101313536, now seen corresponding path program 1 times [2021-11-21 00:08:57,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:57,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010913557] [2021-11-21 00:08:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:57,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3217 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3217 trivial. 0 not checked. [2021-11-21 00:08:59,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:59,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010913557] [2021-11-21 00:08:59,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010913557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:59,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:59,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:08:59,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33321306] [2021-11-21 00:08:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:59,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:08:59,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:59,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:08:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:08:59,190 INFO L87 Difference]: Start difference. First operand 41145 states and 61731 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-21 00:09:09,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:11,687 WARN L515 Checker$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 00:09:14,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:17,542 WARN L515 Checker$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 00:09:19,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:21,827 WARN L515 Checker$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 00:09:29,916 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 00:09:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:30,784 INFO L93 Difference]: Finished difference Result 58947 states and 88447 transitions. [2021-11-21 00:09:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:09:30,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 519 [2021-11-21 00:09:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:31,358 INFO L225 Difference]: With dead ends: 58947 [2021-11-21 00:09:31,358 INFO L226 Difference]: Without dead ends: 58917 [2021-11-21 00:09:31,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:31,394 INFO L933 BasicCegarLoop]: 11298 mSDtfsCounter, 9611 mSDsluCounter, 22162 mSDsCounter, 0 mSdLazyCounter, 2608 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9614 SdHoareTripleChecker+Valid, 31725 SdHoareTripleChecker+Invalid, 2615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2608 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:31,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9614 Valid, 31725 Invalid, 2615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2608 Invalid, 7 Unknown, 0 Unchecked, 30.3s Time] [2021-11-21 00:09:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58917 states. [2021-11-21 00:09:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58917 to 58880. [2021-11-21 00:09:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58880 states, 37641 states have (on average 1.3326425971679816) internal successors, (50162), 38450 states have internal predecessors, (50162), 19080 states have call successors, (19080), 2161 states have call predecessors, (19080), 2158 states have return successors, (19102), 18978 states have call predecessors, (19102), 19077 states have call successors, (19102) [2021-11-21 00:09:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58880 states to 58880 states and 88344 transitions. [2021-11-21 00:09:35,447 INFO L78 Accepts]: Start accepts. Automaton has 58880 states and 88344 transitions. Word has length 519 [2021-11-21 00:09:35,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:35,449 INFO L470 AbstractCegarLoop]: Abstraction has 58880 states and 88344 transitions. [2021-11-21 00:09:35,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2021-11-21 00:09:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 58880 states and 88344 transitions. [2021-11-21 00:09:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2021-11-21 00:09:36,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:36,103 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 14, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:09:36,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:09:36,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:09:36,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1119880148, now seen corresponding path program 1 times [2021-11-21 00:09:36,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:36,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561011766] [2021-11-21 00:09:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:36,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:36,686 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:09:36,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1152178940] [2021-11-21 00:09:36,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:36,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:09:36,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:09:36,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:09:36,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:09:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 19134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:09:41,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:09:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3507 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 3189 trivial. 0 not checked. [2021-11-21 00:09:43,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:09:43,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561011766] [2021-11-21 00:09:43,373 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:09:43,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152178940] [2021-11-21 00:09:43,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152178940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:43,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:43,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:09:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824964231] [2021-11-21 00:09:43,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:43,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:09:43,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:09:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:09:43,377 INFO L87 Difference]: Start difference. First operand 58880 states and 88344 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 3 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) [2021-11-21 00:09:53,131 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 00:09:59,154 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:02,151 WARN L515 Checker$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 00:10:04,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:06,344 WARN L515 Checker$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 00:10:09,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:12,986 WARN L515 Checker$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 00:10:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:15,725 INFO L93 Difference]: Finished difference Result 80651 states and 121388 transitions. [2021-11-21 00:10:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:10:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 3 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) Word has length 881 [2021-11-21 00:10:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:16,143 INFO L225 Difference]: With dead ends: 80651 [2021-11-21 00:10:16,144 INFO L226 Difference]: Without dead ends: 62662 [2021-11-21 00:10:16,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 879 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 00:10:16,309 INFO L933 BasicCegarLoop]: 11107 mSDtfsCounter, 1180 mSDsluCounter, 10553 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 20796 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:16,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 20796 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2010 Invalid, 7 Unknown, 0 Unchecked, 30.6s Time] [2021-11-21 00:10:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62662 states. [2021-11-21 00:10:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62662 to 58885. [2021-11-21 00:10:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58885 states, 37645 states have (on average 1.3326338159118076) internal successors, (50167), 38454 states have internal predecessors, (50167), 19081 states have call successors, (19081), 2161 states have call predecessors, (19081), 2158 states have return successors, (19103), 18979 states have call predecessors, (19103), 19078 states have call successors, (19103) [2021-11-21 00:10:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58885 states to 58885 states and 88351 transitions. [2021-11-21 00:10:20,520 INFO L78 Accepts]: Start accepts. Automaton has 58885 states and 88351 transitions. Word has length 881 [2021-11-21 00:10:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:20,522 INFO L470 AbstractCegarLoop]: Abstraction has 58885 states and 88351 transitions. [2021-11-21 00:10:20,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 3 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 3 states have call predecessors, (127), 3 states have call successors, (127) [2021-11-21 00:10:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 58885 states and 88351 transitions. [2021-11-21 00:10:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2021-11-21 00:10:20,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:20,773 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 17, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:10:20,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-21 00:10:20,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 00:10:20,982 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:10:20,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:20,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1210120989, now seen corresponding path program 1 times [2021-11-21 00:10:20,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:20,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800735237] [2021-11-21 00:10:20,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:20,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:21,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:10:21,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271350704] [2021-11-21 00:10:21,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:21,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:10:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:10:21,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:10:21,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:10:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:25,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 19418 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:10:25,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:10:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3635 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 3389 trivial. 0 not checked. [2021-11-21 00:10:28,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:10:28,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800735237] [2021-11-21 00:10:28,176 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:10:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271350704] [2021-11-21 00:10:28,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271350704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:28,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:28,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:10:28,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259463599] [2021-11-21 00:10:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:28,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:10:28,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:10:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:10:28,180 INFO L87 Difference]: Start difference. First operand 58885 states and 88351 transitions. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2021-11-21 00:10:33,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:37,596 WARN L515 Checker$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 00:10:42,917 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:48,855 WARN L515 Checker$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 00:10:51,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:54,109 WARN L515 Checker$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 00:11:01,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:04,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:06,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:08,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:10,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:12,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:14,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:19,054 WARN L515 Checker$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 00:11:21,440 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 00:11:22,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:22,938 INFO L93 Difference]: Finished difference Result 120829 states and 183800 transitions. [2021-11-21 00:11:22,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:11:22,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) Word has length 925 [2021-11-21 00:11:22,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:23,497 INFO L225 Difference]: With dead ends: 120829 [2021-11-21 00:11:23,497 INFO L226 Difference]: Without dead ends: 85100 [2021-11-21 00:11:23,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:23,645 INFO L933 BasicCegarLoop]: 13583 mSDtfsCounter, 3574 mSDsluCounter, 25278 mSDsCounter, 0 mSdLazyCounter, 3680 mSolverCounterSat, 973 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4584 SdHoareTripleChecker+Valid, 36629 SdHoareTripleChecker+Invalid, 4662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 3680 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:23,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4584 Valid, 36629 Invalid, 4662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [973 Valid, 3680 Invalid, 9 Unknown, 0 Unchecked, 51.9s Time] [2021-11-21 00:11:23,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85100 states. [2021-11-21 00:11:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85100 to 58889. [2021-11-21 00:11:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58889 states, 37649 states have (on average 1.3325984753911126) internal successors, (50171), 38458 states have internal predecessors, (50171), 19081 states have call successors, (19081), 2161 states have call predecessors, (19081), 2158 states have return successors, (19103), 18979 states have call predecessors, (19103), 19078 states have call successors, (19103) [2021-11-21 00:11:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58889 states to 58889 states and 88355 transitions. [2021-11-21 00:11:29,472 INFO L78 Accepts]: Start accepts. Automaton has 58889 states and 88355 transitions. Word has length 925 [2021-11-21 00:11:29,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:29,473 INFO L470 AbstractCegarLoop]: Abstraction has 58889 states and 88355 transitions. [2021-11-21 00:11:29,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 2 states have call successors, (128), 2 states have call predecessors, (128), 2 states have return successors, (127), 2 states have call predecessors, (127), 2 states have call successors, (127) [2021-11-21 00:11:29,473 INFO L276 IsEmpty]: Start isEmpty. Operand 58889 states and 88355 transitions. [2021-11-21 00:11:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2021-11-21 00:11:29,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:29,782 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 18, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:11:29,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:11:29,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 00:11:29,998 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1946217010, now seen corresponding path program 1 times [2021-11-21 00:11:29,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:29,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174748278] [2021-11-21 00:11:29,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:29,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:30,828 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:11:30,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926795856] [2021-11-21 00:11:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:30,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:30,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:30,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:30,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:11:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:35,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 19516 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:11:35,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3669 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 3421 trivial. 0 not checked. [2021-11-21 00:11:37,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:11:37,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:37,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174748278] [2021-11-21 00:11:37,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:11:37,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926795856] [2021-11-21 00:11:37,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926795856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:37,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:37,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:11:37,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18840105] [2021-11-21 00:11:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:37,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:11:37,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:11:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:11:37,339 INFO L87 Difference]: Start difference. First operand 58889 states and 88355 transitions. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2021-11-21 00:11:48,203 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 00:11:50,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:11:53,127 WARN L515 Checker$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 00:11:56,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:01,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:03,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:04,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:06,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:09,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:11,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:14,939 WARN L515 Checker$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 00:12:17,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:19,505 WARN L515 Checker$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 00:12:21,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:24,480 WARN L515 Checker$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 00:12:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:12:24,985 INFO L93 Difference]: Finished difference Result 102453 states and 154470 transitions. [2021-11-21 00:12:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:12:24,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 943 [2021-11-21 00:12:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:12:25,283 INFO L225 Difference]: With dead ends: 102453 [2021-11-21 00:12:25,283 INFO L226 Difference]: Without dead ends: 66720 [2021-11-21 00:12:25,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 941 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:12:25,572 INFO L933 BasicCegarLoop]: 11221 mSDtfsCounter, 2571 mSDsluCounter, 21159 mSDsCounter, 0 mSdLazyCounter, 2887 mSolverCounterSat, 1027 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 30644 SdHoareTripleChecker+Invalid, 3927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1027 IncrementalHoareTripleChecker+Valid, 2887 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:12:25,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 30644 Invalid, 3927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1027 Valid, 2887 Invalid, 13 Unknown, 0 Unchecked, 45.3s Time] [2021-11-21 00:12:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66720 states. [2021-11-21 00:12:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66720 to 58893. [2021-11-21 00:12:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58893 states, 37653 states have (on average 1.3325631423790933) internal successors, (50175), 38462 states have internal predecessors, (50175), 19081 states have call successors, (19081), 2161 states have call predecessors, (19081), 2158 states have return successors, (19103), 18979 states have call predecessors, (19103), 19078 states have call successors, (19103) [2021-11-21 00:12:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58893 states to 58893 states and 88359 transitions. [2021-11-21 00:12:29,801 INFO L78 Accepts]: Start accepts. Automaton has 58893 states and 88359 transitions. Word has length 943 [2021-11-21 00:12:29,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:12:29,802 INFO L470 AbstractCegarLoop]: Abstraction has 58893 states and 88359 transitions. [2021-11-21 00:12:29,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2021-11-21 00:12:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 58893 states and 88359 transitions. [2021-11-21 00:12:30,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2021-11-21 00:12:30,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:12:30,173 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 18, 13, 13, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:12:30,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:12:30,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-21 00:12:30,389 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:12:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:12:30,390 INFO L85 PathProgramCache]: Analyzing trace with hash 766659956, now seen corresponding path program 1 times [2021-11-21 00:12:30,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:12:30,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582605541] [2021-11-21 00:12:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:30,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:12:31,087 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:12:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214500614] [2021-11-21 00:12:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:12:31,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:12:31,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:12:31,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:12:31,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:12:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:12:35,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 19526 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:12:35,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:12:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3669 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 3391 trivial. 0 not checked. [2021-11-21 00:12:37,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:12:37,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:12:37,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582605541] [2021-11-21 00:12:37,962 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:12:37,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214500614] [2021-11-21 00:12:37,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214500614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:12:37,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:12:37,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:12:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349115186] [2021-11-21 00:12:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:12:37,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:12:37,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:12:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:12:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:12:37,967 INFO L87 Difference]: Start difference. First operand 58893 states and 88359 transitions. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2021-11-21 00:12:41,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:45,162 WARN L515 Checker$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 00:12:55,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:12:58,992 WARN L515 Checker$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 00:13:03,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:07,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:14,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:16,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:19,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:22,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:26,674 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 00:13:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:13:27,819 INFO L93 Difference]: Finished difference Result 120825 states and 183787 transitions. [2021-11-21 00:13:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:13:27,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) Word has length 946 [2021-11-21 00:13:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:13:28,248 INFO L225 Difference]: With dead ends: 120825 [2021-11-21 00:13:28,248 INFO L226 Difference]: Without dead ends: 85088 [2021-11-21 00:13:28,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:13:28,409 INFO L933 BasicCegarLoop]: 13447 mSDtfsCounter, 3566 mSDsluCounter, 25342 mSDsCounter, 0 mSdLazyCounter, 3684 mSolverCounterSat, 969 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4530 SdHoareTripleChecker+Valid, 36539 SdHoareTripleChecker+Invalid, 4661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 3684 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:13:28,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4530 Valid, 36539 Invalid, 4661 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [969 Valid, 3684 Invalid, 8 Unknown, 0 Unchecked, 46.4s Time] [2021-11-21 00:13:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85088 states. [2021-11-21 00:13:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85088 to 58897. [2021-11-21 00:13:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58897 states, 37657 states have (on average 1.332527816873357) internal successors, (50179), 38466 states have internal predecessors, (50179), 19081 states have call successors, (19081), 2161 states have call predecessors, (19081), 2158 states have return successors, (19103), 18979 states have call predecessors, (19103), 19078 states have call successors, (19103) [2021-11-21 00:13:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58897 states to 58897 states and 88363 transitions. [2021-11-21 00:13:34,234 INFO L78 Accepts]: Start accepts. Automaton has 58897 states and 88363 transitions. Word has length 946 [2021-11-21 00:13:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:13:34,235 INFO L470 AbstractCegarLoop]: Abstraction has 58897 states and 88363 transitions. [2021-11-21 00:13:34,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 2 states have call successors, (130), 2 states have call predecessors, (130), 2 states have return successors, (129), 2 states have call predecessors, (129), 2 states have call successors, (129) [2021-11-21 00:13:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 58897 states and 88363 transitions. [2021-11-21 00:13:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2021-11-21 00:13:35,058 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:13:35,059 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 18, 13, 13, 7, 6, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:35,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:13:35,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:35,275 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:13:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:13:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1068915165, now seen corresponding path program 1 times [2021-11-21 00:13:35,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:13:35,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576021926] [2021-11-21 00:13:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:35,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:13:35,765 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:13:35,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622640658] [2021-11-21 00:13:35,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:13:35,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:13:35,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:13:35,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:13:35,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:13:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:13:40,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 19639 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:13:40,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:13:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3695 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 3417 trivial. 0 not checked. [2021-11-21 00:13:43,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:13:43,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:13:43,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576021926] [2021-11-21 00:13:43,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:13:43,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622640658] [2021-11-21 00:13:43,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622640658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:13:43,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:13:43,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:13:43,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707888757] [2021-11-21 00:13:43,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:13:43,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:13:43,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:13:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:13:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:13:43,161 INFO L87 Difference]: Start difference. First operand 58897 states and 88363 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 2 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-21 00:13:46,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:56,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:13:58,456 WARN L515 Checker$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 00:14:00,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:03,691 WARN L515 Checker$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 00:14:10,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:12,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:14,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:16,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:18,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:14:21,946 WARN L515 Checker$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 00:14:24,337 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 00:14:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:14:25,619 INFO L93 Difference]: Finished difference Result 102228 states and 154120 transitions. [2021-11-21 00:14:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:14:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 2 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 965 [2021-11-21 00:14:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:14:25,962 INFO L225 Difference]: With dead ends: 102228 [2021-11-21 00:14:25,962 INFO L226 Difference]: Without dead ends: 66487 [2021-11-21 00:14:26,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 963 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:14:26,274 INFO L933 BasicCegarLoop]: 11148 mSDtfsCounter, 2471 mSDsluCounter, 21111 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 983 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2471 SdHoareTripleChecker+Valid, 30526 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:14:26,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2471 Valid, 30526 Invalid, 3866 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [983 Valid, 2873 Invalid, 10 Unknown, 0 Unchecked, 39.8s Time] [2021-11-21 00:14:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66487 states. [2021-11-21 00:14:30,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66487 to 58901. [2021-11-21 00:14:30,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58901 states, 37661 states have (on average 1.3324924988715117) internal successors, (50183), 38470 states have internal predecessors, (50183), 19081 states have call successors, (19081), 2161 states have call predecessors, (19081), 2158 states have return successors, (19103), 18979 states have call predecessors, (19103), 19078 states have call successors, (19103) [2021-11-21 00:14:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58901 states to 58901 states and 88367 transitions. [2021-11-21 00:14:31,067 INFO L78 Accepts]: Start accepts. Automaton has 58901 states and 88367 transitions. Word has length 965 [2021-11-21 00:14:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:14:31,068 INFO L470 AbstractCegarLoop]: Abstraction has 58901 states and 88367 transitions. [2021-11-21 00:14:31,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 2 states have call successors, (135), 2 states have call predecessors, (135), 2 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2021-11-21 00:14:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 58901 states and 88367 transitions. [2021-11-21 00:14:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2021-11-21 00:14:31,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:14:31,408 INFO L514 BasicCegarLoop]: trace histogram [34, 25, 25, 25, 25, 25, 25, 18, 13, 13, 7, 6, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:31,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 00:14:31,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:14:31,633 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:14:31,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:14:31,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1627313890, now seen corresponding path program 1 times [2021-11-21 00:14:31,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:14:31,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365733453] [2021-11-21 00:14:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:31,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:14:32,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:14:32,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840320700] [2021-11-21 00:14:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:14:32,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:14:32,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:14:32,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:14:32,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10b11806-865f-425d-9321-1ba68019ea4c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:14:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:14:37,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 19696 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:14:37,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:14:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3699 backedges. 352 proven. 5 refuted. 0 times theorem prover too weak. 3342 trivial. 0 not checked. [2021-11-21 00:14:39,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:14:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3699 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 3678 trivial. 0 not checked. [2021-11-21 00:14:42,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:14:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365733453] [2021-11-21 00:14:42,624 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:14:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840320700] [2021-11-21 00:14:42,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840320700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:14:42,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310756214] [2021-11-21 00:14:42,670 INFO L159 IcfgInterpreter]: Started Sifa with 545 locations of interest [2021-11-21 00:14:42,670 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:14:42,680 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:14:42,704 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:14:42,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs