./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_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_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/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_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/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_282777dc-25b6-4bf5-88d6-d2359fd682c4/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 80ccff96bb4644269e1ce6d8eb8d6f93859589318842a9f290454700795f0f83 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:09,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:09,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:09,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:09,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:09,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:09,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:09,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:09,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:09,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:09,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:09,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:09,838 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:09,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:09,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:09,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:09,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:09,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:09,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:09,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:09,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:09,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:09,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:09,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:09,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:09,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:09,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:09,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:09,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:09,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:09,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:09,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:09,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:09,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:09,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:09,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:09,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:09,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:09,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:09,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:09,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:09,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:49:09,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:09,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:09,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:09,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:09,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:09,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:09,945 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:09,945 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:09,945 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:09,946 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:49:09,947 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:09,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:09,947 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:49:09,948 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:49:09,948 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:09,948 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:49:09,948 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:49:09,949 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:49:09,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:09,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:09,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:09,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:49:09,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:09,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:49:09,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:49:09,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:09,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:49:09,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:09,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:09,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:09,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:09,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:09,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:49:09,953 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:49:09,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:49:09,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:49:09,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:09,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:09,955 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_282777dc-25b6-4bf5-88d6-d2359fd682c4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80ccff96bb4644269e1ce6d8eb8d6f93859589318842a9f290454700795f0f83 [2021-11-21 01:49:10,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:10,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:10,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:10,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:10,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:10,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 01:49:10,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/data/4289dd765/67f9283b955941f6a63540469f92fed8/FLAG2c327b9ab [2021-11-21 01:49:11,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:11,616 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 01:49:11,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/data/4289dd765/67f9283b955941f6a63540469f92fed8/FLAG2c327b9ab [2021-11-21 01:49:12,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/data/4289dd765/67f9283b955941f6a63540469f92fed8 [2021-11-21 01:49:12,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:12,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:12,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:12,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:12,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:12,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:12" (1/1) ... [2021-11-21 01:49:12,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47400095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:12, skipping insertion in model container [2021-11-21 01:49:12,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:12" (1/1) ... [2021-11-21 01:49:12,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:12,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:20,917 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_282777dc-25b6-4bf5-88d6-d2359fd682c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[896432,896445] [2021-11-21 01:49:20,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:21,109 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:49:22,017 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_282777dc-25b6-4bf5-88d6-d2359fd682c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i[896432,896445] [2021-11-21 01:49:22,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:22,578 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:49:22,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22 WrapperNode [2021-11-21 01:49:22,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:22,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:22,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:49:22,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:49:22,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:23,828 INFO L137 Inliner]: procedures = 697, calls = 16145, calls flagged for inlining = 386, calls inlined = 339, statements flattened = 29246 [2021-11-21 01:49:23,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:23,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:49:23,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:49:23,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:49:23,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:23,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:24,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:24,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:25,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:25,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:25,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:25,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:49:25,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:49:25,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:49:25,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:49:25,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:25,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:25,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:25,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:49:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:49:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 01:49:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 01:49:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-21 01:49:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-21 01:49:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 01:49:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 01:49:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-21 01:49:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-21 01:49:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-21 01:49:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-21 01:49:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-21 01:49:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-21 01:49:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-21 01:49:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-21 01:49:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:49:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:49:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-21 01:49:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-21 01:49:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 01:49:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 01:49:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:49:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:49:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 01:49:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 01:49:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-21 01:49:25,580 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-21 01:49:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:49:25,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:49:25,580 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-21 01:49:25,580 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-21 01:49:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-21 01:49:25,581 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-21 01:49:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-21 01:49:25,581 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-21 01:49:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:49:25,581 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:49:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-21 01:49:25,582 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-21 01:49:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 01:49:25,582 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 01:49:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-21 01:49:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-21 01:49:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:49:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:49:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-21 01:49:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-21 01:49:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:49:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:49:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:49:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:49:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-21 01:49:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-21 01:49:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-21 01:49:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-21 01:49:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:49:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:49:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-21 01:49:25,587 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-21 01:49:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-21 01:49:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-21 01:49:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:49:25,588 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:49:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-21 01:49:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-21 01:49:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-21 01:49:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-21 01:49:25,589 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-21 01:49:25,589 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-21 01:49:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-21 01:49:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-21 01:49:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:49:25,590 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:49:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:49:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:49:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:49:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:49:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:49:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:49:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:49:25,592 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:49:25,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:49:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:49:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:49:25,593 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:49:25,593 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 01:49:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 01:49:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:49:25,594 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:49:25,594 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:49:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-21 01:49:25,595 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-21 01:49:25,595 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-21 01:49:25,596 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-21 01:49:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-21 01:49:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-21 01:49:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-21 01:49:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-21 01:49:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 01:49:25,597 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 01:49:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-21 01:49:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-21 01:49:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 01:49:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 01:49:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-21 01:49:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-21 01:49:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-21 01:49:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-21 01:49:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-21 01:49:25,599 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-21 01:49:25,600 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:49:25,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:49:25,601 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:49:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:49:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-21 01:49:25,604 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-21 01:49:25,604 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-21 01:49:25,605 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-21 01:49:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:49:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 01:49:25,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 01:49:25,606 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-21 01:49:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-21 01:49:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-21 01:49:25,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-21 01:49:25,614 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-21 01:49:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-21 01:49:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:49:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:49:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-21 01:49:25,615 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-21 01:49:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:49:25,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:49:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:49:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-21 01:49:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-21 01:49:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:49:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:49:25,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:49:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-21 01:49:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-21 01:49:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-21 01:49:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-21 01:49:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-21 01:49:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-21 01:49:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:49:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:49:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-21 01:49:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-21 01:49:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-21 01:49:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-21 01:49:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:49:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:49:25,618 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-21 01:49:25,618 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-21 01:49:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 01:49:25,619 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 01:49:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:49:25,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:49:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-21 01:49:25,619 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-21 01:49:25,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:49:25,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:49:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-21 01:49:25,620 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-21 01:49:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-21 01:49:25,620 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-21 01:49:25,620 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-21 01:49:25,620 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-21 01:49:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:49:25,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:49:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-21 01:49:25,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-21 01:49:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-21 01:49:25,621 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-21 01:49:25,621 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-21 01:49:25,622 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-21 01:49:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-21 01:49:25,622 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-21 01:49:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-21 01:49:25,622 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-21 01:49:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:49:25,622 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-21 01:49:25,623 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-21 01:49:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-21 01:49:25,623 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-21 01:49:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:49:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 01:49:25,623 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 01:49:25,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:49:25,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:49:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:49:25,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:49:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:49:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-21 01:49:25,624 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-21 01:49:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:49:25,624 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 01:49:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 01:49:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:49:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:49:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-21 01:49:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-21 01:49:25,625 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-21 01:49:25,625 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-21 01:49:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-21 01:49:25,626 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-21 01:49:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-21 01:49:25,626 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-21 01:49:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:49:25,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:49:25,626 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-21 01:49:25,627 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-21 01:49:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-21 01:49:25,627 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-21 01:49:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-21 01:49:25,627 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-21 01:49:25,627 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:49:25,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:49:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:49:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:49:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:49:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:49:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-21 01:49:25,628 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-21 01:49:25,628 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:49:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:49:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-21 01:49:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-21 01:49:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-21 01:49:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-21 01:49:25,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:49:25,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:49:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-21 01:49:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-21 01:49:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-21 01:49:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-21 01:49:25,630 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-21 01:49:25,630 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-21 01:49:25,631 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 01:49:25,635 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 01:49:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-21 01:49:25,635 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-21 01:49:25,635 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-21 01:49:25,636 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-21 01:49:25,636 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-21 01:49:25,636 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-21 01:49:25,636 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:49:25,636 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:49:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:49:25,637 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:49:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-21 01:49:25,637 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-21 01:49:25,637 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-21 01:49:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-21 01:49:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-21 01:49:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-21 01:49:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-21 01:49:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-21 01:49:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:49:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:49:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-21 01:49:25,639 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-21 01:49:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 01:49:25,639 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 01:49:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-21 01:49:25,639 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-21 01:49:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-21 01:49:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-21 01:49:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-21 01:49:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-21 01:49:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 01:49:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 01:49:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-21 01:49:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-21 01:49:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:49:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:49:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:49:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:49:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 01:49:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 01:49:25,641 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 01:49:25,641 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 01:49:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 01:49:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 01:49:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-21 01:49:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-21 01:49:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:49:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:49:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:49:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:49:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:49:25,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:49:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:49:25,643 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-21 01:49:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-21 01:49:25,643 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 01:49:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 01:49:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 01:49:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 01:49:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-21 01:49:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-21 01:49:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 01:49:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 01:49:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:49:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:49:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-21 01:49:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-21 01:49:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-21 01:49:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-21 01:49:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-21 01:49:25,645 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-21 01:49:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-21 01:49:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-21 01:49:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:49:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:49:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-21 01:49:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-21 01:49:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-21 01:49:25,646 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-21 01:49:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-21 01:49:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-21 01:49:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 01:49:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 01:49:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-21 01:49:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-21 01:49:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-21 01:49:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-21 01:49:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 01:49:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 01:49:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:49:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:49:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 01:49:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 01:49:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 01:49:25,648 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 01:49:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:49:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:49:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:49:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 01:49:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 01:49:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:49:25,649 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:49:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-21 01:49:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-21 01:49:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:49:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 01:49:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 01:49:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 01:49:25,650 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 01:49:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-21 01:49:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-21 01:49:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-21 01:49:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-21 01:49:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-21 01:49:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-21 01:49:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-21 01:49:25,651 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-21 01:49:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:49:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-21 01:49:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-21 01:49:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-21 01:49:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-21 01:49:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-21 01:49:25,652 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-21 01:49:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:49:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:49:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-21 01:49:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-21 01:49:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:49:25,653 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:49:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-21 01:49:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-21 01:49:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:49:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:49:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 01:49:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 01:49:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:49:25,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:49:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:49:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:49:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-21 01:49:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-21 01:49:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:49:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:49:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-21 01:49:25,655 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-21 01:49:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-21 01:49:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-21 01:49:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-21 01:49:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-21 01:49:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-21 01:49:25,656 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-21 01:49:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-21 01:49:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-21 01:49:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-21 01:49:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-21 01:49:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-21 01:49:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-21 01:49:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-21 01:49:25,657 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-21 01:49:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 01:49:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 01:49:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:49:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:49:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:49:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:49:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-21 01:49:25,658 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-21 01:49:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-21 01:49:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-21 01:49:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-21 01:49:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-21 01:49:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-21 01:49:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-21 01:49:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-21 01:49:25,659 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-21 01:49:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 01:49:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 01:49:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:49:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:49:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-21 01:49:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-21 01:49:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 01:49:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 01:49:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-21 01:49:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-21 01:49:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:49:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:49:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-21 01:49:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-21 01:49:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-21 01:49:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-21 01:49:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:49:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-21 01:49:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-21 01:49:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:49:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:49:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-21 01:49:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-21 01:49:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-21 01:49:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-21 01:49:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-21 01:49:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-21 01:49:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:49:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:49:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-21 01:49:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-21 01:49:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 01:49:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 01:49:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-21 01:49:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-21 01:49:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-21 01:49:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-21 01:49:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:49:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:49:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-21 01:49:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-21 01:49:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-21 01:49:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-21 01:49:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-21 01:49:25,665 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-21 01:49:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 01:49:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 01:49:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 01:49:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 01:49:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_10 [2021-11-21 01:49:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_10 [2021-11-21 01:49:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-21 01:49:25,666 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-21 01:49:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-21 01:49:25,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-21 01:49:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-21 01:49:25,667 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-21 01:49:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:49:25,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:49:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:49:25,668 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:49:25,668 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 01:49:25,668 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 01:49:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:49:25,668 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:49:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-21 01:49:25,668 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-21 01:49:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-21 01:49:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-21 01:49:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:49:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:49:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-21 01:49:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-21 01:49:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:49:25,669 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:49:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-21 01:49:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-21 01:49:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:49:25,670 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:49:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 01:49:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:49:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 01:49:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 01:49:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-21 01:49:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-21 01:49:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:49:25,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:49:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-21 01:49:28,015 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:49:28,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:49:29,451 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:50:32,654 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:50:40,059 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:50:40,059 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-21 01:50:40,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:40 BoogieIcfgContainer [2021-11-21 01:50:40,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:50:40,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:50:40,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:50:40,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:50:40,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:12" (1/3) ... [2021-11-21 01:50:40,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7cae8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:40, skipping insertion in model container [2021-11-21 01:50:40,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (2/3) ... [2021-11-21 01:50:40,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7cae8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:50:40, skipping insertion in model container [2021-11-21 01:50:40,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:50:40" (3/3) ... [2021-11-21 01:50:40,086 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-drivers-clk1_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 01:50:40,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:50:40,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:50:40,189 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:50:40,195 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 01:50:40,195 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:50:40,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 6539 states, 4176 states have (on average 1.335727969348659) internal successors, (5578), 4282 states have internal predecessors, (5578), 2122 states have call successors, (2122), 242 states have call predecessors, (2122), 241 states have return successors, (2118), 2105 states have call predecessors, (2118), 2118 states have call successors, (2118) [2021-11-21 01:50:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 01:50:40,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:40,338 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-21 01:50:40,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:50:40,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:40,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1101434559, now seen corresponding path program 1 times [2021-11-21 01:50:40,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:50:40,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440894652] [2021-11-21 01:50:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:40,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:50:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 01:50:41,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:50:41,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440894652] [2021-11-21 01:50:41,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440894652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:41,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:50:41,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:50:41,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430622850] [2021-11-21 01:50:41,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:41,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:50:41,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:50:41,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:50:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:50:41,825 INFO L87 Difference]: Start difference. First operand has 6539 states, 4176 states have (on average 1.335727969348659) internal successors, (5578), 4282 states have internal predecessors, (5578), 2122 states have call successors, (2122), 242 states have call predecessors, (2122), 241 states have return successors, (2118), 2105 states have call predecessors, (2118), 2118 states have call successors, (2118) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:50:44,817 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 01:50:53,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:56,350 WARN L515 Checker$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 01:50:58,408 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:00,645 WARN L515 Checker$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 01:51:06,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:11,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:14,943 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:17,298 WARN L515 Checker$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 01:51:17,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:51:17,683 INFO L93 Difference]: Finished difference Result 17283 states and 25946 transitions. [2021-11-21 01:51:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:51:17,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-21 01:51:17,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:51:17,820 INFO L225 Difference]: With dead ends: 17283 [2021-11-21 01:51:17,820 INFO L226 Difference]: Without dead ends: 10716 [2021-11-21 01:51:17,894 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 01:51:17,898 INFO L933 BasicCegarLoop]: 10754 mSDtfsCounter, 6288 mSDsluCounter, 21359 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6290 SdHoareTripleChecker+Valid, 30472 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:51:17,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6290 Valid, 30472 Invalid, 2491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2483 Invalid, 7 Unknown, 0 Unchecked, 35.0s Time] [2021-11-21 01:51:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2021-11-21 01:51:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10710. [2021-11-21 01:51:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10710 states, 6808 states have (on average 1.3279964747356052) internal successors, (9041), 6966 states have internal predecessors, (9041), 3477 states have call successors, (3477), 425 states have call predecessors, (3477), 424 states have return successors, (3475), 3460 states have call predecessors, (3475), 3475 states have call successors, (3475) [2021-11-21 01:51:19,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10710 states to 10710 states and 15993 transitions. [2021-11-21 01:51:19,228 INFO L78 Accepts]: Start accepts. Automaton has 10710 states and 15993 transitions. Word has length 34 [2021-11-21 01:51:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:51:19,228 INFO L470 AbstractCegarLoop]: Abstraction has 10710 states and 15993 transitions. [2021-11-21 01:51:19,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-21 01:51:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states and 15993 transitions. [2021-11-21 01:51:19,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-21 01:51:19,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:51:19,270 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:51:19,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:51:19,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:51:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:51:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash 219520837, now seen corresponding path program 1 times [2021-11-21 01:51:19,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:51:19,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719613385] [2021-11-21 01:51:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:51:19,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:51:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:51:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-21 01:51:20,503 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:51:20,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719613385] [2021-11-21 01:51:20,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719613385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:51:20,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:51:20,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:51:20,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865394095] [2021-11-21 01:51:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:51:20,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:51:20,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:51:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:51:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:51:20,508 INFO L87 Difference]: Start difference. First operand 10710 states and 15993 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-21 01:51:23,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:25,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:31,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:33,707 WARN L515 Checker$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 01:51:35,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:49,308 WARN L515 Checker$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 01:51:51,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:53,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:55,650 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:58,555 WARN L515 Checker$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 01:52:00,787 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 01:52:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:01,108 INFO L93 Difference]: Finished difference Result 15369 states and 22921 transitions. [2021-11-21 01:52:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:52:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 241 [2021-11-21 01:52:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:01,255 INFO L225 Difference]: With dead ends: 15369 [2021-11-21 01:52:01,256 INFO L226 Difference]: Without dead ends: 15337 [2021-11-21 01:52:01,275 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 01:52:01,277 INFO L933 BasicCegarLoop]: 10609 mSDtfsCounter, 6857 mSDsluCounter, 21173 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6857 SdHoareTripleChecker+Valid, 30170 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:01,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6857 Valid, 30170 Invalid, 2433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2425 Invalid, 8 Unknown, 0 Unchecked, 40.1s Time] [2021-11-21 01:52:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15337 states. [2021-11-21 01:52:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15337 to 15302. [2021-11-21 01:52:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15302 states, 9743 states have (on average 1.3287488453248486) internal successors, (12946), 9961 states have internal predecessors, (12946), 4942 states have call successors, (4942), 617 states have call predecessors, (4942), 616 states have return successors, (4940), 4922 states have call predecessors, (4940), 4940 states have call successors, (4940) [2021-11-21 01:52:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15302 states to 15302 states and 22828 transitions. [2021-11-21 01:52:02,799 INFO L78 Accepts]: Start accepts. Automaton has 15302 states and 22828 transitions. Word has length 241 [2021-11-21 01:52:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:02,801 INFO L470 AbstractCegarLoop]: Abstraction has 15302 states and 22828 transitions. [2021-11-21 01:52:02,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-21 01:52:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 15302 states and 22828 transitions. [2021-11-21 01:52:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2021-11-21 01:52:02,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:02,939 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:52:02,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:52:02,939 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:52:02,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:02,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1893971375, now seen corresponding path program 1 times [2021-11-21 01:52:02,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:02,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905328348] [2021-11-21 01:52:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:02,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:03,510 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:52:03,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431320335] [2021-11-21 01:52:03,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:03,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:52:03,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:52:03,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:52:03,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:52:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:07,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 17909 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:52:07,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2021-11-21 01:52:09,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:52:09,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:09,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905328348] [2021-11-21 01:52:09,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:52:09,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431320335] [2021-11-21 01:52:09,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431320335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:09,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:09,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:52:09,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138587198] [2021-11-21 01:52:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:09,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:52:09,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:52:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:52:09,262 INFO L87 Difference]: Start difference. First operand 15302 states and 22828 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2021-11-21 01:52:11,943 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 01:52:19,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:22,032 WARN L515 Checker$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 01:52:25,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:29,176 WARN L515 Checker$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 01:52:35,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:38,518 WARN L515 Checker$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 01:52:38,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:38,881 INFO L93 Difference]: Finished difference Result 23077 states and 34614 transitions. [2021-11-21 01:52:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:52:38,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 599 [2021-11-21 01:52:38,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:38,996 INFO L225 Difference]: With dead ends: 23077 [2021-11-21 01:52:38,996 INFO L226 Difference]: Without dead ends: 16571 [2021-11-21 01:52:39,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 597 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 01:52:39,073 INFO L933 BasicCegarLoop]: 10065 mSDtfsCounter, 1085 mSDsluCounter, 9991 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 19258 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:39,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 19258 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1710 Invalid, 7 Unknown, 0 Unchecked, 29.0s Time] [2021-11-21 01:52:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16571 states. [2021-11-21 01:52:40,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16571 to 15307. [2021-11-21 01:52:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15307 states, 9747 states have (on average 1.3287165281625115) internal successors, (12951), 9965 states have internal predecessors, (12951), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4941), 4923 states have call predecessors, (4941), 4941 states have call successors, (4941) [2021-11-21 01:52:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15307 states to 15307 states and 22835 transitions. [2021-11-21 01:52:40,618 INFO L78 Accepts]: Start accepts. Automaton has 15307 states and 22835 transitions. Word has length 599 [2021-11-21 01:52:40,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:40,621 INFO L470 AbstractCegarLoop]: Abstraction has 15307 states and 22835 transitions. [2021-11-21 01:52:40,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 3 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2021-11-21 01:52:40,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15307 states and 22835 transitions. [2021-11-21 01:52:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2021-11-21 01:52:40,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:40,732 INFO L514 BasicCegarLoop]: trace histogram [17, 13, 13, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:52:40,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:40,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:52:40,959 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:52:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:40,959 INFO L85 PathProgramCache]: Analyzing trace with hash -987409873, now seen corresponding path program 1 times [2021-11-21 01:52:40,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:52:40,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410889223] [2021-11-21 01:52:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:40,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:52:41,369 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:52:41,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242961682] [2021-11-21 01:52:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:52:41,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:52:41,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:52:41,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:52:41,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:52:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:52:45,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 18193 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:52:46,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-21 01:52:47,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:52:47,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:52:47,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410889223] [2021-11-21 01:52:47,618 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:52:47,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242961682] [2021-11-21 01:52:47,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242961682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:52:47,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:52:47,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:52:47,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963606266] [2021-11-21 01:52:47,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:52:47,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:52:47,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:52:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:52:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:52:47,621 INFO L87 Difference]: Start difference. First operand 15307 states and 22835 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2021-11-21 01:52:50,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:58,563 WARN L515 Checker$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 01:53:00,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:02,832 WARN L515 Checker$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 01:53:07,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:09,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:16,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:18,245 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:20,283 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 01:53:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:53:22,207 INFO L93 Difference]: Finished difference Result 27224 states and 40726 transitions. [2021-11-21 01:53:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:53:22,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) Word has length 643 [2021-11-21 01:53:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:53:22,285 INFO L225 Difference]: With dead ends: 27224 [2021-11-21 01:53:22,286 INFO L226 Difference]: Without dead ends: 16121 [2021-11-21 01:53:22,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 641 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 01:53:22,357 INFO L933 BasicCegarLoop]: 9418 mSDtfsCounter, 452 mSDsluCounter, 19882 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 113 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 27676 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:53:22,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 27676 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2511 Invalid, 8 Unknown, 0 Unchecked, 34.0s Time] [2021-11-21 01:53:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16121 states. [2021-11-21 01:53:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16121 to 15311. [2021-11-21 01:53:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15311 states, 9751 states have (on average 1.3285816839298534) internal successors, (12955), 9969 states have internal predecessors, (12955), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4941), 4923 states have call predecessors, (4941), 4941 states have call successors, (4941) [2021-11-21 01:53:23,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15311 states to 15311 states and 22839 transitions. [2021-11-21 01:53:23,775 INFO L78 Accepts]: Start accepts. Automaton has 15311 states and 22839 transitions. Word has length 643 [2021-11-21 01:53:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:53:23,776 INFO L470 AbstractCegarLoop]: Abstraction has 15311 states and 22839 transitions. [2021-11-21 01:53:23,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (107), 2 states have call predecessors, (107), 2 states have return successors, (106), 2 states have call predecessors, (106), 2 states have call successors, (106) [2021-11-21 01:53:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 15311 states and 22839 transitions. [2021-11-21 01:53:23,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-21 01:53:23,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:53:23,854 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:53:23,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:53:24,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:53:24,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:53:24,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:53:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -121361059, now seen corresponding path program 1 times [2021-11-21 01:53:24,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:53:24,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882795082] [2021-11-21 01:53:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:24,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:53:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:25,339 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:53:25,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882795082] [2021-11-21 01:53:25,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-21 01:53:25,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132539949] [2021-11-21 01:53:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:53:25,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:53:25,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:53:25,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:53:25,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:53:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:53:29,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 18291 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:53:29,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:53:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2021-11-21 01:53:31,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:53:31,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132539949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:53:31,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:53:31,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:53:31,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940230352] [2021-11-21 01:53:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:53:31,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:53:31,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:53:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:53:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:53:31,409 INFO L87 Difference]: Start difference. First operand 15311 states and 22839 transitions. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-21 01:53:34,097 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 01:53:36,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:44,150 WARN L515 Checker$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 01:53:46,189 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:49,225 WARN L515 Checker$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 01:53:51,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:53:55,861 WARN L515 Checker$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 01:53:59,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:02,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:04,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:06,484 WARN L515 Checker$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 01:54:09,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:11,428 WARN L515 Checker$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 01:54:13,574 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 01:54:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:13,868 INFO L93 Difference]: Finished difference Result 26752 states and 39984 transitions. [2021-11-21 01:54:13,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:54:13,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 661 [2021-11-21 01:54:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:13,942 INFO L225 Difference]: With dead ends: 26752 [2021-11-21 01:54:13,943 INFO L226 Difference]: Without dead ends: 15645 [2021-11-21 01:54:14,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 659 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 01:54:14,012 INFO L933 BasicCegarLoop]: 9224 mSDtfsCounter, 329 mSDsluCounter, 19665 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 123 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27291 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:14,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27291 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2430 Invalid, 11 Unknown, 0 Unchecked, 42.0s Time] [2021-11-21 01:54:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15645 states. [2021-11-21 01:54:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15645 to 15315. [2021-11-21 01:54:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15315 states, 9755 states have (on average 1.3284469502819067) internal successors, (12959), 9973 states have internal predecessors, (12959), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4941), 4923 states have call predecessors, (4941), 4941 states have call successors, (4941) [2021-11-21 01:54:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15315 states to 15315 states and 22843 transitions. [2021-11-21 01:54:15,442 INFO L78 Accepts]: Start accepts. Automaton has 15315 states and 22843 transitions. Word has length 661 [2021-11-21 01:54:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:15,443 INFO L470 AbstractCegarLoop]: Abstraction has 15315 states and 22843 transitions. [2021-11-21 01:54:15,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-21 01:54:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15315 states and 22843 transitions. [2021-11-21 01:54:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2021-11-21 01:54:15,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:15,523 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:15,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:54:15,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:54:15,747 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:54:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1058659792, now seen corresponding path program 1 times [2021-11-21 01:54:15,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:15,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369046751] [2021-11-21 01:54:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:15,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:16,336 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:54:16,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135785326] [2021-11-21 01:54:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:16,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:54:16,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:54:16,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:54:16,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:54:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:54:20,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 18301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:54:20,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:54:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2021-11-21 01:54:21,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:54:21,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:54:21,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369046751] [2021-11-21 01:54:21,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:54:21,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135785326] [2021-11-21 01:54:21,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135785326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:54:21,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:54:21,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:54:21,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639527254] [2021-11-21 01:54:21,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:54:21,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:54:21,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:54:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:54:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:54:21,878 INFO L87 Difference]: Start difference. First operand 15315 states and 22843 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-21 01:54:24,822 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 01:54:32,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:34,867 WARN L515 Checker$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 01:54:37,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:41,247 WARN L515 Checker$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 01:54:47,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:49,064 WARN L515 Checker$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 01:54:51,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:52,245 WARN L515 Checker$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 01:54:53,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:54:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:54:55,063 INFO L93 Difference]: Finished difference Result 27220 states and 40713 transitions. [2021-11-21 01:54:55,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:54:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) Word has length 664 [2021-11-21 01:54:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:54:55,205 INFO L225 Difference]: With dead ends: 27220 [2021-11-21 01:54:55,205 INFO L226 Difference]: Without dead ends: 16109 [2021-11-21 01:54:55,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 662 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 01:54:55,242 INFO L933 BasicCegarLoop]: 9422 mSDtfsCounter, 331 mSDsluCounter, 20044 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 109 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 27824 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:54:55,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 27824 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2536 Invalid, 7 Unknown, 0 Unchecked, 32.6s Time] [2021-11-21 01:54:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16109 states. [2021-11-21 01:54:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16109 to 15319. [2021-11-21 01:54:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15319 states, 9759 states have (on average 1.3283123270826929) internal successors, (12963), 9977 states have internal predecessors, (12963), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4941), 4923 states have call predecessors, (4941), 4941 states have call successors, (4941) [2021-11-21 01:54:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 22847 transitions. [2021-11-21 01:54:56,295 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 22847 transitions. Word has length 664 [2021-11-21 01:54:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:54:56,296 INFO L470 AbstractCegarLoop]: Abstraction has 15319 states and 22847 transitions. [2021-11-21 01:54:56,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 2 states have call successors, (109), 2 states have call predecessors, (109), 2 states have return successors, (108), 2 states have call predecessors, (108), 2 states have call successors, (108) [2021-11-21 01:54:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 22847 transitions. [2021-11-21 01:54:56,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2021-11-21 01:54:56,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:54:56,360 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 7, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:54:56,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:54:56,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:54:56,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:54:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:54:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1988051823, now seen corresponding path program 1 times [2021-11-21 01:54:56,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:54:56,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26353770] [2021-11-21 01:54:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:56,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:54:57,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:54:57,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815832212] [2021-11-21 01:54:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:54:57,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:54:57,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:54:57,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:54:57,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:55:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:01,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 18414 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:01,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2021-11-21 01:55:03,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:55:03,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26353770] [2021-11-21 01:55:03,107 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:55:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815832212] [2021-11-21 01:55:03,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815832212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:55:03,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:55:03,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:55:03,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583318293] [2021-11-21 01:55:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:55:03,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:55:03,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:55:03,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:55:03,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:55:03,110 INFO L87 Difference]: Start difference. First operand 15319 states and 22847 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2021-11-21 01:55:05,987 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 01:55:14,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:16,784 WARN L515 Checker$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 01:55:19,039 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:22,661 WARN L515 Checker$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 01:55:25,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:55:30,221 WARN L515 Checker$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 01:55:32,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:55:32,614 INFO L93 Difference]: Finished difference Result 26768 states and 40000 transitions. [2021-11-21 01:55:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:55:32,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 683 [2021-11-21 01:55:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:55:32,676 INFO L225 Difference]: With dead ends: 26768 [2021-11-21 01:55:32,676 INFO L226 Difference]: Without dead ends: 15653 [2021-11-21 01:55:32,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 681 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 01:55:32,717 INFO L933 BasicCegarLoop]: 9229 mSDtfsCounter, 329 mSDsluCounter, 19669 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 123 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 27295 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:55:32,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 27295 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2442 Invalid, 6 Unknown, 0 Unchecked, 29.0s Time] [2021-11-21 01:55:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15653 states. [2021-11-21 01:55:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15653 to 15323. [2021-11-21 01:55:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15323 states, 9763 states have (on average 1.328177814196456) internal successors, (12967), 9981 states have internal predecessors, (12967), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4941), 4923 states have call predecessors, (4941), 4941 states have call successors, (4941) [2021-11-21 01:55:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15323 states to 15323 states and 22851 transitions. [2021-11-21 01:55:33,634 INFO L78 Accepts]: Start accepts. Automaton has 15323 states and 22851 transitions. Word has length 683 [2021-11-21 01:55:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:55:33,635 INFO L470 AbstractCegarLoop]: Abstraction has 15323 states and 22851 transitions. [2021-11-21 01:55:33,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2021-11-21 01:55:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 15323 states and 22851 transitions. [2021-11-21 01:55:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2021-11-21 01:55:33,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:55:33,818 INFO L514 BasicCegarLoop]: trace histogram [18, 13, 13, 8, 7, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:55:33,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:55:34,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:55:34,047 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:55:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:55:34,047 INFO L85 PathProgramCache]: Analyzing trace with hash -585503966, now seen corresponding path program 1 times [2021-11-21 01:55:34,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:55:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709021805] [2021-11-21 01:55:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:34,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:55:34,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:55:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976470668] [2021-11-21 01:55:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:55:34,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:55:34,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:55:34,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:55:34,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_282777dc-25b6-4bf5-88d6-d2359fd682c4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:55:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:55:38,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 18471 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:55:38,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:55:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 279 proven. 5 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2021-11-21 01:55:39,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:55:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2021-11-21 01:55:41,488 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:55:41,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709021805] [2021-11-21 01:55:41,489 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:55:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976470668] [2021-11-21 01:55:41,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976470668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:55:41,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [95541130] [2021-11-21 01:55:41,539 INFO L159 IcfgInterpreter]: Started Sifa with 486 locations of interest [2021-11-21 01:55:41,539 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:55:41,550 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:55:41,555 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:55:41,556 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs