./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.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_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/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_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/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_f1dea61a-1f99-461c-9947-bc576585dac5/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 32a406239684e899577576103e146c0b88a65f19a1f620e7a11415e96a39c63a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:30,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:30,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:30,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:30,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:30,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:30,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:30,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:30,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:30,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:30,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:30,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:30,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:30,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:30,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:30,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:30,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:30,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:30,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:30,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:30,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:30,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:30,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:30,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:30,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:30,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:30,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:30,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:30,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:30,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:30,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:30,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:30,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:30,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:30,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:30,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:30,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:30,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:30,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:30,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:30,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:30,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:32:30,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:30,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:30,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:30,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:30,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:30,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:30,742 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:30,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:30,742 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:30,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:30,743 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:30,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:30,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:30,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:30,744 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:30,745 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:30,745 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:30,745 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:30,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:30,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:30,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:30,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:30,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:30,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:30,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:30,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:30,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:30,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:30,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:30,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:30,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:30,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:30,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:30,751 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:30,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:30,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:30,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:30,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:30,753 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_f1dea61a-1f99-461c-9947-bc576585dac5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a406239684e899577576103e146c0b88a65f19a1f620e7a11415e96a39c63a [2021-11-20 23:32:31,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:31,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:31,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:31,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:31,062 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:31,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2021-11-20 23:32:31,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/data/31391aafa/49274baf62d54f699d35930a7d3a5c8f/FLAG50a9b55e1 [2021-11-20 23:32:32,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:32,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2021-11-20 23:32:32,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/data/31391aafa/49274baf62d54f699d35930a7d3a5c8f/FLAG50a9b55e1 [2021-11-20 23:32:32,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/data/31391aafa/49274baf62d54f699d35930a7d3a5c8f [2021-11-20 23:32:32,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:32,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:32,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:32,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:32,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:32,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:32" (1/1) ... [2021-11-20 23:32:32,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e4bb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:32, skipping insertion in model container [2021-11-20 23:32:32,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:32" (1/1) ... [2021-11-20 23:32:32,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:32,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:37,601 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512219,512232] [2021-11-20 23:32:37,603 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512366,512379] [2021-11-20 23:32:37,604 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512505,512518] [2021-11-20 23:32:37,605 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512663,512676] [2021-11-20 23:32:37,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:37,739 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:38,350 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512219,512232] [2021-11-20 23:32:38,351 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512366,512379] [2021-11-20 23:32:38,351 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512505,512518] [2021-11-20 23:32:38,352 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_f1dea61a-1f99-461c-9947-bc576585dac5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512663,512676] [2021-11-20 23:32:38,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:38,748 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:38,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38 WrapperNode [2021-11-20 23:32:38,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:38,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:38,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:38,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:38,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,401 INFO L137 Inliner]: procedures = 578, calls = 5653, calls flagged for inlining = 344, calls inlined = 320, statements flattened = 10716 [2021-11-20 23:32:39,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:39,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:39,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:39,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:39,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:39,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:39,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:39,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:39,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (1/1) ... [2021-11-20 23:32:39,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:40,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:40,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1dea61a-1f99-461c-9947-bc576585dac5/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-20 23:32:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-20 23:32:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_disable [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_disable [2021-11-20 23:32:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:32:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-20 23:32:40,072 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-20 23:32:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_intr [2021-11-20 23:32:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_intr [2021-11-20 23:32:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:32:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:32:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:32:40,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:32:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_minnow_platform_init [2021-11-20 23:32:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_minnow_platform_init [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_open [2021-11-20 23:32:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_open [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-20 23:32:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-20 23:32:40,074 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-20 23:32:40,074 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-20 23:32:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reinit_locked [2021-11-20 23:32:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reinit_locked [2021-11-20 23:32:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_up_phy [2021-11-20 23:32:40,075 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_up_phy [2021-11-20 23:32:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_tx_resources [2021-11-20 23:32:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_tx_resources [2021-11-20 23:32:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-20 23:32:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-20 23:32:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:32:40,076 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:32:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:32:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:32:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_netpoll [2021-11-20 23:32:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_netpoll [2021-11-20 23:32:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_init_hw [2021-11-20 23:32:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_init_hw [2021-11-20 23:32:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_rx_resources [2021-11-20 23:32:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_rx_resources [2021-11-20 23:32:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_tx_resources [2021-11-20 23:32:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_tx_resources [2021-11-20 23:32:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-20 23:32:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-20 23:32:40,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2021-11-20 23:32:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2021-11-20 23:32:40,081 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:32:40,081 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:32:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:32:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:32:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-20 23:32:40,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-20 23:32:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure pch_set_station_address [2021-11-20 23:32:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_set_station_address [2021-11-20 23:32:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_26 [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_26 [2021-11-20 23:32:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:32:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:32:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_write [2021-11-20 23:32:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_write [2021-11-20 23:32:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:32:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:32:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-20 23:32:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-20 23:32:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 23:32:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 23:32:40,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:32:40,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:32:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-20 23:32:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-20 23:32:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:32:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:32:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-20 23:32:40,087 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-20 23:32:40,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:32:40,088 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_up [2021-11-20 23:32:40,088 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_up [2021-11-20 23:32:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 23:32:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 23:32:40,089 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_resume [2021-11-20 23:32:40,089 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_resume [2021-11-20 23:32:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:32:40,090 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:32:40,090 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_write [2021-11-20 23:32:40,091 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_write [2021-11-20 23:32:40,091 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-20 23:32:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-20 23:32:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:32:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-20 23:32:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-20 23:32:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:32:40,092 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:32:40,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-20 23:32:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-20 23:32:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:32:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:32:40,093 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_enable_dma_rx [2021-11-20 23:32:40,093 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_enable_dma_rx [2021-11-20 23:32:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_configure_rx [2021-11-20 23:32:40,094 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_configure_rx [2021-11-20 23:32:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:32:40,094 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_wait_clr_bit [2021-11-20 23:32:40,095 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_wait_clr_bit [2021-11-20 23:32:40,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:32:40,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:32:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:32:40,098 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:32:40,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:32:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-20 23:32:40,099 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-20 23:32:40,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:32:40,100 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:32:40,100 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_remove [2021-11-20 23:32:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_remove [2021-11-20 23:32:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:32:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:32:40,106 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-20 23:32:40,106 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:32:40,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:32:40,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-20 23:32:40,107 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-20 23:32:40,107 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_force_mac_fc [2021-11-20 23:32:40,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_force_mac_fc [2021-11-20 23:32:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_suspend [2021-11-20 23:32:40,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_suspend [2021-11-20 23:32:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-20 23:32:40,108 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-20 23:32:40,108 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:32:40,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:32:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:32:40,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:32:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2021-11-20 23:32:40,109 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2021-11-20 23:32:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:32:40,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:32:40,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:32:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:32:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2021-11-20 23:32:40,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2021-11-20 23:32:40,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-20 23:32:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-20 23:32:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-20 23:32:40,111 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:40,111 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:32:40,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:32:40,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-20 23:32:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:32:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:32:40,113 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:32:40,113 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2021-11-20 23:32:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2021-11-20 23:32:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_set_wol_event [2021-11-20 23:32:40,114 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_set_wol_event [2021-11-20 23:32:40,114 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:32:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:32:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_ctrl_miim [2021-11-20 23:32:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_ctrl_miim [2021-11-20 23:32:40,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:32:40,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:32:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_get_regs_len [2021-11-20 23:32:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_get_regs_len [2021-11-20 23:32:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:32:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:32:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-20 23:32:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-20 23:32:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_alloc_rx_buffers [2021-11-20 23:32:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_alloc_rx_buffers [2021-11-20 23:32:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure __pch_gbe_suspend [2021-11-20 23:32:40,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __pch_gbe_suspend [2021-11-20 23:32:40,118 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-20 23:32:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-20 23:32:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_get_bus_info [2021-11-20 23:32:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_get_bus_info [2021-11-20 23:32:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-20 23:32:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-20 23:32:40,119 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_down [2021-11-20 23:32:40,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_down [2021-11-20 23:32:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:32:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:32:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:32:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:32:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-20 23:32:40,120 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-20 23:32:40,120 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_update_stats [2021-11-20 23:32:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_update_stats [2021-11-20 23:32:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:32:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:32:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:32:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:32:40,121 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum [2021-11-20 23:32:40,121 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum [2021-11-20 23:32:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_read [2021-11-20 23:32:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_read [2021-11-20 23:32:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_rx_ring [2021-11-20 23:32:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_rx_ring [2021-11-20 23:32:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:32:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:32:40,122 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_up [2021-11-20 23:32:40,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_up [2021-11-20 23:32:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:32:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:32:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:32:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:32:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-20 23:32:40,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-20 23:32:40,123 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2021-11-20 23:32:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2021-11-20 23:32:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_tx_ring [2021-11-20 23:32:40,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_tx_ring [2021-11-20 23:32:40,124 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reset [2021-11-20 23:32:40,125 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reset [2021-11-20 23:32:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-20 23:32:40,129 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-20 23:32:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-20 23:32:40,129 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-20 23:32:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_stop_14_2 [2021-11-20 23:32:40,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_stop_14_2 [2021-11-20 23:32:40,129 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_stop [2021-11-20 23:32:40,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_stop [2021-11-20 23:32:40,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:32:40,131 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2021-11-20 23:32:40,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2021-11-20 23:32:40,131 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-20 23:32:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-20 23:32:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 23:32:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 23:32:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:32:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:32:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-11-20 23:32:40,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-11-20 23:32:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:32:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_io_resume [2021-11-20 23:32:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_io_resume [2021-11-20 23:32:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-20 23:32:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-20 23:32:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_read [2021-11-20 23:32:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_read [2021-11-20 23:32:40,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:32:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-20 23:32:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-20 23:32:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-20 23:32:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-20 23:32:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-20 23:32:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-20 23:32:40,134 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_nway_reset [2021-11-20 23:32:40,134 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_nway_reset [2021-11-20 23:32:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:32:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:32:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-20 23:32:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-20 23:32:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_enable [2021-11-20 23:32:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_enable [2021-11-20 23:32:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-20 23:32:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-20 23:32:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:32:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:32:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_hw_reset [2021-11-20 23:32:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_hw_reset [2021-11-20 23:32:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_tx_timeout [2021-11-20 23:32:40,136 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_tx_timeout [2021-11-20 23:32:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2021-11-20 23:32:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2021-11-20 23:32:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:32:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:32:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:32:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:32:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2021-11-20 23:32:40,137 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2021-11-20 23:32:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_down_phy [2021-11-20 23:32:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_down_phy [2021-11-20 23:32:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-20 23:32:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-20 23:32:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_mode [2021-11-20 23:32:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_mode [2021-11-20 23:32:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:32:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:32:40,138 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:32:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:32:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rx_resources [2021-11-20 23:32:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rx_resources [2021-11-20 23:32:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:32:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:32:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:32:40,139 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:32:40,139 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_validate_option [2021-11-20 23:32:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_validate_option [2021-11-20 23:32:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_reset_hw [2021-11-20 23:32:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_reset_hw [2021-11-20 23:32:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure udp_hdr [2021-11-20 23:32:40,140 INFO L138 BoogieDeclarations]: Found implementation of procedure udp_hdr [2021-11-20 23:32:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:32:40,140 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rctl [2021-11-20 23:32:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rctl [2021-11-20 23:32:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_sw_reset [2021-11-20 23:32:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_sw_reset [2021-11-20 23:32:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:32:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:32:40,141 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_phy_hw_reset [2021-11-20 23:32:40,141 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_phy_hw_reset [2021-11-20 23:32:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_write_reg_miic [2021-11-20 23:32:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_write_reg_miic [2021-11-20 23:32:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:32:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:32:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 23:32:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 23:32:40,142 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_control_write [2021-11-20 23:32:40,142 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_control_write [2021-11-20 23:32:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_multi [2021-11-20 23:32:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_multi [2021-11-20 23:32:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_shutdown [2021-11-20 23:32:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_shutdown [2021-11-20 23:32:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-20 23:32:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-20 23:32:40,143 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:32:40,143 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:32:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_read_reg_miic [2021-11-20 23:32:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_read_reg_miic [2021-11-20 23:32:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:32:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:32:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_read_mac_addr [2021-11-20 23:32:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_read_mac_addr [2021-11-20 23:32:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_rgmii_ctrl [2021-11-20 23:32:40,144 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_rgmii_ctrl [2021-11-20 23:32:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-20 23:32:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-20 23:32:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_down [2021-11-20 23:32:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_down [2021-11-20 23:32:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_irq [2021-11-20 23:32:40,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_irq [2021-11-20 23:32:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_mar_set [2021-11-20 23:32:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_mar_set [2021-11-20 23:32:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:32:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:32:41,470 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:41,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:41,879 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:32:58,631 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:32:59,083 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:33:01,295 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:33:01,295 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:33:01,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:33:01 BoogieIcfgContainer [2021-11-20 23:33:01,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:33:01,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:33:01,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:33:01,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:33:01,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:32" (1/3) ... [2021-11-20 23:33:01,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2508c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:33:01, skipping insertion in model container [2021-11-20 23:33:01,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:38" (2/3) ... [2021-11-20 23:33:01,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2508c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:33:01, skipping insertion in model container [2021-11-20 23:33:01,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:33:01" (3/3) ... [2021-11-20 23:33:01,312 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2021-11-20 23:33:01,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:33:01,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:33:01,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:33:01,383 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:33:01,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:33:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 2532 states, 1510 states have (on average 1.290728476821192) internal successors, (1949), 1554 states have internal predecessors, (1949), 852 states have call successors, (852), 170 states have call predecessors, (852), 169 states have return successors, (842), 825 states have call predecessors, (842), 842 states have call successors, (842) [2021-11-20 23:33:01,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-20 23:33:01,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:01,512 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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] [2021-11-20 23:33:01,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:01,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1308323923, now seen corresponding path program 1 times [2021-11-20 23:33:01,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:01,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499686934] [2021-11-20 23:33:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:01,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2021-11-20 23:33:02,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:02,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499686934] [2021-11-20 23:33:02,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499686934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:02,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:02,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:02,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43988108] [2021-11-20 23:33:02,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:02,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:02,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:02,601 INFO L87 Difference]: Start difference. First operand has 2532 states, 1510 states have (on average 1.290728476821192) internal successors, (1949), 1554 states have internal predecessors, (1949), 852 states have call successors, (852), 170 states have call predecessors, (852), 169 states have return successors, (842), 825 states have call predecessors, (842), 842 states have call successors, (842) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:33:07,438 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:09,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:13,878 INFO L93 Difference]: Finished difference Result 7295 states and 10616 transitions. [2021-11-20 23:33:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:13,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 234 [2021-11-20 23:33:13,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:13,959 INFO L225 Difference]: With dead ends: 7295 [2021-11-20 23:33:13,959 INFO L226 Difference]: Without dead ends: 4792 [2021-11-20 23:33:13,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:13,993 INFO L933 BasicCegarLoop]: 3831 mSDtfsCounter, 3291 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 6869 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:14,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3291 Valid, 6869 Invalid, 1128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1117 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-11-20 23:33:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2021-11-20 23:33:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4789. [2021-11-20 23:33:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 2861 states have (on average 1.283117790982174) internal successors, (3671), 2945 states have internal predecessors, (3671), 1592 states have call successors, (1592), 335 states have call predecessors, (1592), 334 states have return successors, (1589), 1555 states have call predecessors, (1589), 1589 states have call successors, (1589) [2021-11-20 23:33:14,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6852 transitions. [2021-11-20 23:33:14,617 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6852 transitions. Word has length 234 [2021-11-20 23:33:14,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:14,619 INFO L470 AbstractCegarLoop]: Abstraction has 4789 states and 6852 transitions. [2021-11-20 23:33:14,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:33:14,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6852 transitions. [2021-11-20 23:33:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-20 23:33:14,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:14,644 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:14,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:33:14,645 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1789427043, now seen corresponding path program 1 times [2021-11-20 23:33:14,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:14,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260265059] [2021-11-20 23:33:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:14,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2021-11-20 23:33:15,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:15,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260265059] [2021-11-20 23:33:15,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260265059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:15,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:15,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:15,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829984349] [2021-11-20 23:33:15,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:15,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:15,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:15,272 INFO L87 Difference]: Start difference. First operand 4789 states and 6852 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:33:21,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:23,221 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 [] [2021-11-20 23:33:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:25,860 INFO L93 Difference]: Finished difference Result 11378 states and 16229 transitions. [2021-11-20 23:33:25,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:25,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 248 [2021-11-20 23:33:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:25,932 INFO L225 Difference]: With dead ends: 11378 [2021-11-20 23:33:25,932 INFO L226 Difference]: Without dead ends: 6632 [2021-11-20 23:33:25,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:25,968 INFO L933 BasicCegarLoop]: 3761 mSDtfsCounter, 2920 mSDsluCounter, 3533 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 6765 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:25,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2920 Valid, 6765 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1158 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-20 23:33:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2021-11-20 23:33:26,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 6623. [2021-11-20 23:33:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 3967 states have (on average 1.2772876228888328) internal successors, (5067), 4087 states have internal predecessors, (5067), 2169 states have call successors, (2169), 487 states have call predecessors, (2169), 485 states have return successors, (2166), 2114 states have call predecessors, (2166), 2166 states have call successors, (2166) [2021-11-20 23:33:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 9402 transitions. [2021-11-20 23:33:26,401 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 9402 transitions. Word has length 248 [2021-11-20 23:33:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:26,405 INFO L470 AbstractCegarLoop]: Abstraction has 6623 states and 9402 transitions. [2021-11-20 23:33:26,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:33:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 9402 transitions. [2021-11-20 23:33:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-20 23:33:26,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:26,419 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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] [2021-11-20 23:33:26,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:33:26,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1446497962, now seen corresponding path program 1 times [2021-11-20 23:33:26,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485308967] [2021-11-20 23:33:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:26,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2021-11-20 23:33:27,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:27,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485308967] [2021-11-20 23:33:27,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485308967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:27,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:27,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:27,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545993491] [2021-11-20 23:33:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:27,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:27,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:27,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:27,011 INFO L87 Difference]: Start difference. First operand 6623 states and 9402 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:33:30,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:34,157 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:38,698 INFO L93 Difference]: Finished difference Result 19418 states and 27525 transitions. [2021-11-20 23:33:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:33:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 261 [2021-11-20 23:33:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:38,832 INFO L225 Difference]: With dead ends: 19418 [2021-11-20 23:33:38,833 INFO L226 Difference]: Without dead ends: 12838 [2021-11-20 23:33:38,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:38,881 INFO L933 BasicCegarLoop]: 3807 mSDtfsCounter, 3190 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3190 SdHoareTripleChecker+Valid, 6833 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:38,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3190 Valid, 6833 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1126 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2021-11-20 23:33:38,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12838 states. [2021-11-20 23:33:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12838 to 12824. [2021-11-20 23:33:39,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12824 states, 7689 states have (on average 1.2745480556639355) internal successors, (9800), 7929 states have internal predecessors, (9800), 4174 states have call successors, (4174), 962 states have call predecessors, (4174), 959 states have return successors, (4171), 4060 states have call predecessors, (4171), 4171 states have call successors, (4171) [2021-11-20 23:33:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12824 states to 12824 states and 18145 transitions. [2021-11-20 23:33:39,852 INFO L78 Accepts]: Start accepts. Automaton has 12824 states and 18145 transitions. Word has length 261 [2021-11-20 23:33:39,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:39,854 INFO L470 AbstractCegarLoop]: Abstraction has 12824 states and 18145 transitions. [2021-11-20 23:33:39,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:33:39,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12824 states and 18145 transitions. [2021-11-20 23:33:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-20 23:33:39,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:39,868 INFO L514 BasicCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:33:39,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:33:39,869 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1034025176, now seen corresponding path program 1 times [2021-11-20 23:33:39,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:39,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709764605] [2021-11-20 23:33:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:39,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1895 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1895 trivial. 0 not checked. [2021-11-20 23:33:40,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:40,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709764605] [2021-11-20 23:33:40,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709764605] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:40,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:40,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:33:40,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923009036] [2021-11-20 23:33:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:40,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:33:40,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:40,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:33:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:33:40,390 INFO L87 Difference]: Start difference. First operand 12824 states and 18145 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:33:45,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:33:52,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:33:52,011 INFO L93 Difference]: Finished difference Result 21496 states and 30427 transitions. [2021-11-20 23:33:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:33:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 278 [2021-11-20 23:33:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:33:52,149 INFO L225 Difference]: With dead ends: 21496 [2021-11-20 23:33:52,149 INFO L226 Difference]: Without dead ends: 21457 [2021-11-20 23:33:52,166 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 [2021-11-20 23:33:52,167 INFO L933 BasicCegarLoop]: 3819 mSDtfsCounter, 3316 mSDsluCounter, 7895 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 10624 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:33:52,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3316 Valid, 10624 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1643 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2021-11-20 23:33:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21457 states. [2021-11-20 23:33:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21457 to 21454. [2021-11-20 23:33:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21454 states, 12863 states have (on average 1.2749747337324109) internal successors, (16400), 13259 states have internal predecessors, (16400), 6978 states have call successors, (6978), 1614 states have call predecessors, (6978), 1611 states have return successors, (6975), 6794 states have call predecessors, (6975), 6975 states have call successors, (6975) [2021-11-20 23:33:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21454 states to 21454 states and 30353 transitions. [2021-11-20 23:33:53,564 INFO L78 Accepts]: Start accepts. Automaton has 21454 states and 30353 transitions. Word has length 278 [2021-11-20 23:33:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:33:53,564 INFO L470 AbstractCegarLoop]: Abstraction has 21454 states and 30353 transitions. [2021-11-20 23:33:53,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 23:33:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 21454 states and 30353 transitions. [2021-11-20 23:33:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-20 23:33:53,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:33:53,602 INFO L514 BasicCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 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] [2021-11-20 23:33:53,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:33:53,603 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:33:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:33:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash 234125560, now seen corresponding path program 1 times [2021-11-20 23:33:53,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:33:53,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814997175] [2021-11-20 23:33:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:33:53,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:33:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:33:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1893 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2021-11-20 23:33:54,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:33:54,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814997175] [2021-11-20 23:33:54,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814997175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:33:54,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:33:54,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:33:54,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238555488] [2021-11-20 23:33:54,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:33:54,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:33:54,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:33:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:33:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:33:54,124 INFO L87 Difference]: Start difference. First operand 21454 states and 30353 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 23:34:00,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:03,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:05,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:05,983 INFO L93 Difference]: Finished difference Result 47028 states and 66561 transitions. [2021-11-20 23:34:05,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:34:05,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 297 [2021-11-20 23:34:05,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:06,190 INFO L225 Difference]: With dead ends: 47028 [2021-11-20 23:34:06,190 INFO L226 Difference]: Without dead ends: 29593 [2021-11-20 23:34:06,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:06,313 INFO L933 BasicCegarLoop]: 5458 mSDtfsCounter, 2914 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 8460 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:06,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 8460 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1567 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2021-11-20 23:34:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29593 states. [2021-11-20 23:34:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29593 to 29580. [2021-11-20 23:34:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29580 states, 17739 states have (on average 1.2740289757032528) internal successors, (22600), 18291 states have internal predecessors, (22600), 9598 states have call successors, (9598), 2246 states have call predecessors, (9598), 2241 states have return successors, (9595), 9338 states have call predecessors, (9595), 9595 states have call successors, (9595) [2021-11-20 23:34:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29580 states to 29580 states and 41793 transitions. [2021-11-20 23:34:08,283 INFO L78 Accepts]: Start accepts. Automaton has 29580 states and 41793 transitions. Word has length 297 [2021-11-20 23:34:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:08,284 INFO L470 AbstractCegarLoop]: Abstraction has 29580 states and 41793 transitions. [2021-11-20 23:34:08,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 23:34:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 29580 states and 41793 transitions. [2021-11-20 23:34:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-20 23:34:08,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:08,333 INFO L514 BasicCegarLoop]: trace histogram [26, 21, 21, 21, 21, 21, 21, 6, 6, 3, 3, 3, 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] [2021-11-20 23:34:08,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:34:08,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:34:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1034309204, now seen corresponding path program 1 times [2021-11-20 23:34:08,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:08,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954103695] [2021-11-20 23:34:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:08,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2021-11-20 23:34:08,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:08,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954103695] [2021-11-20 23:34:08,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954103695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:08,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:08,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:34:08,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823358562] [2021-11-20 23:34:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:08,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:34:08,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:08,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:34:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:08,752 INFO L87 Difference]: Start difference. First operand 29580 states and 41793 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-20 23:34:12,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:15,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:20,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:22,298 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:23,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:27,011 INFO L93 Difference]: Finished difference Result 67618 states and 95567 transitions. [2021-11-20 23:34:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:34:27,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 322 [2021-11-20 23:34:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:27,256 INFO L225 Difference]: With dead ends: 67618 [2021-11-20 23:34:27,256 INFO L226 Difference]: Without dead ends: 42057 [2021-11-20 23:34:27,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:34:27,524 INFO L933 BasicCegarLoop]: 5773 mSDtfsCounter, 3190 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 9 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3190 SdHoareTripleChecker+Valid, 8797 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:27,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3190 Valid, 8797 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1600 Invalid, 4 Unknown, 0 Unchecked, 17.0s Time] [2021-11-20 23:34:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42057 states. [2021-11-20 23:34:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42057 to 42035. [2021-11-20 23:34:29,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42035 states, 25205 states have (on average 1.2735171592937908) internal successors, (32099), 26000 states have internal predecessors, (32099), 13630 states have call successors, (13630), 3205 states have call predecessors, (13630), 3198 states have return successors, (13627), 13249 states have call predecessors, (13627), 13627 states have call successors, (13627) [2021-11-20 23:34:29,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42035 states to 42035 states and 59356 transitions. [2021-11-20 23:34:29,823 INFO L78 Accepts]: Start accepts. Automaton has 42035 states and 59356 transitions. Word has length 322 [2021-11-20 23:34:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:29,825 INFO L470 AbstractCegarLoop]: Abstraction has 42035 states and 59356 transitions. [2021-11-20 23:34:29,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-20 23:34:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 42035 states and 59356 transitions. [2021-11-20 23:34:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-20 23:34:29,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:29,918 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 6, 6, 4, 4, 4, 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] [2021-11-20 23:34:29,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:34:29,919 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:34:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1457035868, now seen corresponding path program 1 times [2021-11-20 23:34:29,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:29,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575929951] [2021-11-20 23:34:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:29,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2021-11-20 23:34:30,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575929951] [2021-11-20 23:34:30,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575929951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:30,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:30,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:34:30,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011859759] [2021-11-20 23:34:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:30,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:34:30,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:34:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:34:30,907 INFO L87 Difference]: Start difference. First operand 42035 states and 59356 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 23:34:36,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:34:43,227 INFO L93 Difference]: Finished difference Result 42060 states and 59382 transitions. [2021-11-20 23:34:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:34:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 346 [2021-11-20 23:34:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:34:43,443 INFO L225 Difference]: With dead ends: 42060 [2021-11-20 23:34:43,443 INFO L226 Difference]: Without dead ends: 42058 [2021-11-20 23:34:43,599 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 [2021-11-20 23:34:43,600 INFO L933 BasicCegarLoop]: 3818 mSDtfsCounter, 3269 mSDsluCounter, 7895 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 10623 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:34:43,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 10623 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1642 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2021-11-20 23:34:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42058 states. [2021-11-20 23:34:45,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42058 to 42035. [2021-11-20 23:34:45,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42035 states, 25205 states have (on average 1.2732791112874429) internal successors, (32093), 26000 states have internal predecessors, (32093), 13630 states have call successors, (13630), 3205 states have call predecessors, (13630), 3198 states have return successors, (13627), 13249 states have call predecessors, (13627), 13627 states have call successors, (13627) [2021-11-20 23:34:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42035 states to 42035 states and 59350 transitions. [2021-11-20 23:34:45,991 INFO L78 Accepts]: Start accepts. Automaton has 42035 states and 59350 transitions. Word has length 346 [2021-11-20 23:34:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:34:45,994 INFO L470 AbstractCegarLoop]: Abstraction has 42035 states and 59350 transitions. [2021-11-20 23:34:45,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-20 23:34:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 42035 states and 59350 transitions. [2021-11-20 23:34:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2021-11-20 23:34:46,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:34:46,427 INFO L514 BasicCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 19, 17, 12, 12, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-20 23:34:46,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:34:46,427 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:34:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:34:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1383998312, now seen corresponding path program 1 times [2021-11-20 23:34:46,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:34:46,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779409162] [2021-11-20 23:34:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:34:46,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:34:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:34:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3933 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3933 trivial. 0 not checked. [2021-11-20 23:34:47,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:34:47,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779409162] [2021-11-20 23:34:47,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779409162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:34:47,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:34:47,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:34:47,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85216631] [2021-11-20 23:34:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:34:47,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:34:47,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:34:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:34:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:34:47,400 INFO L87 Difference]: Start difference. First operand 42035 states and 59350 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-20 23:34:51,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:56,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:34:59,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:35:02,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:35:10,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:10,403 INFO L93 Difference]: Finished difference Result 120605 states and 177725 transitions. [2021-11-20 23:35:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:35:10,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 816 [2021-11-20 23:35:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:10,887 INFO L225 Difference]: With dead ends: 120605 [2021-11-20 23:35:10,887 INFO L226 Difference]: Without dead ends: 82589 [2021-11-20 23:35:11,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:11,080 INFO L933 BasicCegarLoop]: 5790 mSDtfsCounter, 2287 mSDsluCounter, 10630 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 634 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 14930 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:11,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2933 Valid, 14930 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2485 Invalid, 4 Unknown, 0 Unchecked, 20.6s Time] [2021-11-20 23:35:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82589 states. [2021-11-20 23:35:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82589 to 42047. [2021-11-20 23:35:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42047 states, 25217 states have (on average 1.2731490661061982) internal successors, (32105), 26012 states have internal predecessors, (32105), 13630 states have call successors, (13630), 3205 states have call predecessors, (13630), 3198 states have return successors, (13627), 13249 states have call predecessors, (13627), 13627 states have call successors, (13627) [2021-11-20 23:35:14,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42047 states to 42047 states and 59362 transitions. [2021-11-20 23:35:14,396 INFO L78 Accepts]: Start accepts. Automaton has 42047 states and 59362 transitions. Word has length 816 [2021-11-20 23:35:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:14,398 INFO L470 AbstractCegarLoop]: Abstraction has 42047 states and 59362 transitions. [2021-11-20 23:35:14,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-20 23:35:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 42047 states and 59362 transitions. [2021-11-20 23:35:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2021-11-20 23:35:14,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:14,524 INFO L514 BasicCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-20 23:35:14,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:35:14,524 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2015625044, now seen corresponding path program 1 times [2021-11-20 23:35:14,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:14,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879780743] [2021-11-20 23:35:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:14,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4259 trivial. 0 not checked. [2021-11-20 23:35:15,607 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:15,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879780743] [2021-11-20 23:35:15,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879780743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:15,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:15,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:35:15,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452983025] [2021-11-20 23:35:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:15,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:15,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:15,612 INFO L87 Difference]: Start difference. First operand 42047 states and 59362 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-20 23:35:23,592 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:35:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:32,092 INFO L93 Difference]: Finished difference Result 107513 states and 156815 transitions. [2021-11-20 23:35:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:35:32,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 888 [2021-11-20 23:35:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:32,402 INFO L225 Difference]: With dead ends: 107513 [2021-11-20 23:35:32,402 INFO L226 Difference]: Without dead ends: 69485 [2021-11-20 23:35:32,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:32,537 INFO L933 BasicCegarLoop]: 4633 mSDtfsCounter, 2373 mSDsluCounter, 8979 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 664 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 12316 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:32,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2705 Valid, 12316 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2060 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2021-11-20 23:35:32,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69485 states. [2021-11-20 23:35:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69485 to 42059. [2021-11-20 23:35:34,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42059 states, 25229 states have (on average 1.2730191446351422) internal successors, (32117), 26024 states have internal predecessors, (32117), 13630 states have call successors, (13630), 3205 states have call predecessors, (13630), 3198 states have return successors, (13627), 13249 states have call predecessors, (13627), 13627 states have call successors, (13627) [2021-11-20 23:35:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42059 states to 42059 states and 59374 transitions. [2021-11-20 23:35:35,287 INFO L78 Accepts]: Start accepts. Automaton has 42059 states and 59374 transitions. Word has length 888 [2021-11-20 23:35:35,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:35:35,288 INFO L470 AbstractCegarLoop]: Abstraction has 42059 states and 59374 transitions. [2021-11-20 23:35:35,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2021-11-20 23:35:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 42059 states and 59374 transitions. [2021-11-20 23:35:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2021-11-20 23:35:35,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:35:35,421 INFO L514 BasicCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-20 23:35:35,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:35:35,421 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:35:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:35:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1179268244, now seen corresponding path program 1 times [2021-11-20 23:35:35,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:35:35,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553781825] [2021-11-20 23:35:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:35:35,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:35:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:35:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2021-11-20 23:35:36,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:35:36,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553781825] [2021-11-20 23:35:36,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553781825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:35:36,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:35:36,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:35:36,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181285057] [2021-11-20 23:35:36,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:35:36,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:35:36,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:35:36,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:35:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:35:36,482 INFO L87 Difference]: Start difference. First operand 42059 states and 59374 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-20 23:35:44,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:35:47,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:35:53,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:35:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:35:57,026 INFO L93 Difference]: Finished difference Result 120863 states and 178097 transitions. [2021-11-20 23:35:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:35:57,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 902 [2021-11-20 23:35:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:35:57,464 INFO L225 Difference]: With dead ends: 120863 [2021-11-20 23:35:57,464 INFO L226 Difference]: Without dead ends: 82823 [2021-11-20 23:35:57,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:35:57,583 INFO L933 BasicCegarLoop]: 5832 mSDtfsCounter, 2307 mSDsluCounter, 10685 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 635 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 15023 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:35:57,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2967 Valid, 15023 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 2498 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2021-11-20 23:35:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82823 states. [2021-11-20 23:36:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82823 to 42071. [2021-11-20 23:36:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42071 states, 25241 states have (on average 1.2728893466978328) internal successors, (32129), 26036 states have internal predecessors, (32129), 13630 states have call successors, (13630), 3205 states have call predecessors, (13630), 3198 states have return successors, (13627), 13249 states have call predecessors, (13627), 13627 states have call successors, (13627) [2021-11-20 23:36:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42071 states to 42071 states and 59386 transitions. [2021-11-20 23:36:00,667 INFO L78 Accepts]: Start accepts. Automaton has 42071 states and 59386 transitions. Word has length 902 [2021-11-20 23:36:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:00,669 INFO L470 AbstractCegarLoop]: Abstraction has 42071 states and 59386 transitions. [2021-11-20 23:36:00,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-20 23:36:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 42071 states and 59386 transitions. [2021-11-20 23:36:00,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2021-11-20 23:36:00,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:00,792 INFO L514 BasicCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-20 23:36:00,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:36:00,792 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1973927798, now seen corresponding path program 1 times [2021-11-20 23:36:00,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:00,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168981181] [2021-11-20 23:36:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:00,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2021-11-20 23:36:01,823 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:01,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168981181] [2021-11-20 23:36:01,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168981181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:01,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:01,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:01,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997363800] [2021-11-20 23:36:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:01,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:01,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:01,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:01,827 INFO L87 Difference]: Start difference. First operand 42071 states and 59386 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-20 23:36:06,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:11,073 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:13,437 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 [] [2021-11-20 23:36:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:21,105 INFO L93 Difference]: Finished difference Result 88728 states and 130310 transitions. [2021-11-20 23:36:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:36:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 903 [2021-11-20 23:36:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:21,574 INFO L225 Difference]: With dead ends: 88728 [2021-11-20 23:36:21,574 INFO L226 Difference]: Without dead ends: 69569 [2021-11-20 23:36:21,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:36:21,675 INFO L933 BasicCegarLoop]: 4690 mSDtfsCounter, 2331 mSDsluCounter, 9039 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 634 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 12428 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:21,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 12428 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2113 Invalid, 2 Unknown, 0 Unchecked, 16.2s Time] [2021-11-20 23:36:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69569 states. [2021-11-20 23:36:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69569 to 42083. [2021-11-20 23:36:24,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42083 states, 25253 states have (on average 1.2727596721181642) internal successors, (32141), 26048 states have internal predecessors, (32141), 13630 states have call successors, (13630), 3205 states have call predecessors, (13630), 3198 states have return successors, (13627), 13249 states have call predecessors, (13627), 13627 states have call successors, (13627) [2021-11-20 23:36:24,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 59398 transitions. [2021-11-20 23:36:24,647 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 59398 transitions. Word has length 903 [2021-11-20 23:36:24,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:24,648 INFO L470 AbstractCegarLoop]: Abstraction has 42083 states and 59398 transitions. [2021-11-20 23:36:24,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2021-11-20 23:36:24,648 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 59398 transitions. [2021-11-20 23:36:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2021-11-20 23:36:24,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:24,772 INFO L514 BasicCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-11-20 23:36:24,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:36:24,772 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:24,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1939063893, now seen corresponding path program 1 times [2021-11-20 23:36:24,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606951142] [2021-11-20 23:36:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:24,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2021-11-20 23:36:26,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:26,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606951142] [2021-11-20 23:36:26,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606951142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:26,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:26,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:26,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779123041] [2021-11-20 23:36:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:26,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:26,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:26,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:26,558 INFO L87 Difference]: Start difference. First operand 42083 states and 59398 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2021-11-20 23:36:30,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:36,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:44,238 INFO L93 Difference]: Finished difference Result 82011 states and 115715 transitions. [2021-11-20 23:36:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:36:44,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 923 [2021-11-20 23:36:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:44,558 INFO L225 Difference]: With dead ends: 82011 [2021-11-20 23:36:44,558 INFO L226 Difference]: Without dead ends: 82009 [2021-11-20 23:36:44,589 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 [2021-11-20 23:36:44,589 INFO L933 BasicCegarLoop]: 3926 mSDtfsCounter, 3346 mSDsluCounter, 8010 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 10835 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:44,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3346 Valid, 10835 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1667 Invalid, 2 Unknown, 0 Unchecked, 14.8s Time] [2021-11-20 23:36:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82009 states. [2021-11-20 23:36:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82009 to 81960. [2021-11-20 23:36:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81960 states, 49193 states have (on average 1.2728233691785416) internal successors, (62614), 50741 states have internal predecessors, (62614), 26523 states have call successors, (26523), 6255 states have call predecessors, (26523), 6242 states have return successors, (26520), 25776 states have call predecessors, (26520), 26520 states have call successors, (26520) [2021-11-20 23:36:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81960 states to 81960 states and 115657 transitions. [2021-11-20 23:36:49,178 INFO L78 Accepts]: Start accepts. Automaton has 81960 states and 115657 transitions. Word has length 923 [2021-11-20 23:36:49,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:49,179 INFO L470 AbstractCegarLoop]: Abstraction has 81960 states and 115657 transitions. [2021-11-20 23:36:49,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 2 states have call successors, (119), 2 states have call predecessors, (119), 1 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2021-11-20 23:36:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 81960 states and 115657 transitions. [2021-11-20 23:36:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2021-11-20 23:36:49,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:49,764 INFO L514 BasicCegarLoop]: trace histogram [36, 26, 26, 26, 26, 26, 26, 20, 18, 15, 15, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 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] [2021-11-20 23:36:49,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:36:49,764 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:49,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1783093629, now seen corresponding path program 1 times [2021-11-20 23:36:49,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:49,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468782168] [2021-11-20 23:36:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:49,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4749 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4738 trivial. 0 not checked. [2021-11-20 23:36:51,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468782168] [2021-11-20 23:36:51,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468782168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:51,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:51,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 23:36:51,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032969159] [2021-11-20 23:36:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:51,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:36:51,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:36:51,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:36:51,490 INFO L87 Difference]: Start difference. First operand 81960 states and 115657 transitions. Second operand has 7 states, 6 states have (on average 43.666666666666664) internal successors, (262), 7 states have internal predecessors, (262), 4 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (126), 3 states have call predecessors, (126), 4 states have call successors, (126) [2021-11-20 23:37:01,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:10,318 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:13,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:15,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:27,536 INFO L93 Difference]: Finished difference Result 212483 states and 309857 transitions. [2021-11-20 23:37:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 23:37:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 43.666666666666664) internal successors, (262), 7 states have internal predecessors, (262), 4 states have call successors, (127), 2 states have call predecessors, (127), 2 states have return successors, (126), 3 states have call predecessors, (126), 4 states have call successors, (126) Word has length 963 [2021-11-20 23:37:27,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:28,424 INFO L225 Difference]: With dead ends: 212483 [2021-11-20 23:37:28,424 INFO L226 Difference]: Without dead ends: 136474 [2021-11-20 23:37:28,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:37:28,721 INFO L933 BasicCegarLoop]: 4638 mSDtfsCounter, 3754 mSDsluCounter, 23785 mSDsCounter, 0 mSdLazyCounter, 4206 mSolverCounterSat, 1542 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3793 SdHoareTripleChecker+Valid, 25062 SdHoareTripleChecker+Invalid, 5751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1542 IncrementalHoareTripleChecker+Valid, 4206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:28,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3793 Valid, 25062 Invalid, 5751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1542 Valid, 4206 Invalid, 3 Unknown, 0 Unchecked, 27.5s Time] [2021-11-20 23:37:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136474 states.