./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba --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 e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:08:17,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:08:17,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:08:17,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:08:17,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:08:17,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:08:17,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:08:17,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:08:17,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:08:17,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:08:17,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:08:17,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:08:17,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:08:17,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:08:17,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:08:17,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:08:17,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:08:17,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:08:17,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:08:17,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:08:17,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:08:17,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:08:17,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:08:17,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:08:17,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:08:17,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:08:17,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:08:17,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:08:17,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:08:17,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:08:17,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:08:17,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:08:17,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:08:17,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:08:17,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:08:17,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:08:17,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:08:17,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:08:17,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:08:17,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:08:17,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:08:17,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:08:17,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:08:17,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:08:17,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:08:17,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:08:17,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:08:17,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:08:17,731 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:08:17,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:08:17,731 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:08:17,731 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:08:17,733 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:08:17,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:08:17,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:08:17,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:08:17,734 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:08:17,734 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:08:17,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:08:17,734 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:08:17,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:08:17,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:08:17,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:08:17,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:08:17,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:08:17,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:08:17,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:08:17,737 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:08:17,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:08:17,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:08:17,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:08:17,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:17,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:08:17,739 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:08:17,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:08:17,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:08:17,740 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:08:17,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:08:17,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:08:17,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:08:17,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 [2022-11-22 02:08:18,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:08:18,118 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:08:18,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:08:18,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:08:18,127 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:08:18,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2022-11-22 02:08:21,677 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:08:22,532 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:08:22,532 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2022-11-22 02:08:22,620 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/data/f7d2d126c/1e4cb8aa5ccb4a53ae4f9786a9adbc2b/FLAG63af2b69c [2022-11-22 02:08:22,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/data/f7d2d126c/1e4cb8aa5ccb4a53ae4f9786a9adbc2b [2022-11-22 02:08:22,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:08:22,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:08:22,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:22,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:08:22,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:08:22,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:22" (1/1) ... [2022-11-22 02:08:22,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d68567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:22, skipping insertion in model container [2022-11-22 02:08:22,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:08:22" (1/1) ... [2022-11-22 02:08:22,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:08:22,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:08:27,332 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2022-11-22 02:08:27,336 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2022-11-22 02:08:27,337 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2022-11-22 02:08:27,337 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2022-11-22 02:08:27,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:27,459 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:08:27,989 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2022-11-22 02:08:27,989 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2022-11-22 02:08:27,990 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2022-11-22 02:08:27,990 WARN L237 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_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2022-11-22 02:08:28,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:08:28,465 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:08:28,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28 WrapperNode [2022-11-22 02:08:28,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:08:28,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:08:28,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:08:28,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:08:28,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:28,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:28,963 INFO L138 Inliner]: procedures = 543, calls = 4106, calls flagged for inlining = 313, calls inlined = 291, statements flattened = 8466 [2022-11-22 02:08:28,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:08:28,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:08:28,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:08:28,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:08:28,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:28,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,503 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:08:29,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:08:29,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:08:29,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:08:29,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (1/1) ... [2022-11-22 02:08:29,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:08:29,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:08:29,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:08:29,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7875c8f-5a41-4170-bb1b-4bf24ef6fa23/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:08:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2022-11-22 02:08:29,779 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2022-11-22 02:08:29,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:08:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:08:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-22 02:08:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-22 02:08:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:08:29,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:08:29,780 INFO L130 BoogieDeclarations]: Found specification of procedure alx_halt [2022-11-22 02:08:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_halt [2022-11-22 02:08:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_txbuf [2022-11-22 02:08:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_txbuf [2022-11-22 02:08:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-11-22 02:08:29,781 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-11-22 02:08:29,781 INFO L130 BoogieDeclarations]: Found specification of procedure alx_suspend [2022-11-22 02:08:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_suspend [2022-11-22 02:08:29,782 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_read_phy_reg [2022-11-22 02:08:29,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_read_phy_reg [2022-11-22 02:08:29,783 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 02:08:29,783 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 02:08:29,784 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_reg [2022-11-22 02:08:29,784 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_reg [2022-11-22 02:08:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:08:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:08:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:08:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:08:29,785 INFO L130 BoogieDeclarations]: Found specification of procedure alx_pci_error_resume [2022-11-22 02:08:29,785 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_pci_error_resume [2022-11-22 02:08:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tx_timeout [2022-11-22 02:08:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tx_timeout [2022-11-22 02:08:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_enable [2022-11-22 02:08:29,786 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_enable [2022-11-22 02:08:29,786 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:08:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:08:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem16 [2022-11-22 02:08:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem16 [2022-11-22 02:08:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_disable [2022-11-22 02:08:29,787 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_disable [2022-11-22 02:08:29,787 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:08:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:08:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:08:29,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:08:29,788 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 02:08:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 02:08:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:08:29,789 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:08:29,789 INFO L130 BoogieDeclarations]: Found specification of procedure alx_activate [2022-11-22 02:08:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_activate [2022-11-22 02:08:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure alx_remove [2022-11-22 02:08:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_remove [2022-11-22 02:08:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:08:29,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:08:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:08:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:08:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_msi [2022-11-22 02:08:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_msi [2022-11-22 02:08:29,791 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-22 02:08:29,791 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-22 02:08:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:08:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 02:08:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 02:08:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_write [2022-11-22 02:08:29,792 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_write [2022-11-22 02:08:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-22 02:08:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-22 02:08:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-22 02:08:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-22 02:08:29,793 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_reg [2022-11-22 02:08:29,794 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_reg [2022-11-22 02:08:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2022-11-22 02:08:29,794 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_ext [2022-11-22 02:08:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_ext [2022-11-22 02:08:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:08:29,795 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:08:29,795 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 02:08:29,796 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 02:08:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:08:29,796 INFO L130 BoogieDeclarations]: Found specification of procedure ethadv_to_hw_cfg [2022-11-22 02:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ethadv_to_hw_cfg [2022-11-22 02:08:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure alx_stop [2022-11-22 02:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_stop [2022-11-22 02:08:29,797 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:08:29,797 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:08:29,798 INFO L130 BoogieDeclarations]: Found specification of procedure alx_resume [2022-11-22 02:08:29,798 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_resume [2022-11-22 02:08:29,798 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:08:29,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:08:29,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:08:29,799 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_link_check [2022-11-22 02:08:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_link_check [2022-11-22 02:08:29,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:08:29,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:08:29,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:08:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:08:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:08:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:08:29,801 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:08:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:08:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:08:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_open [2022-11-22 02:08:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_open [2022-11-22 02:08:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_core [2022-11-22 02:08:29,802 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_core [2022-11-22 02:08:29,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:08:29,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:08:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:08:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:08:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure alx_update_hw_stats [2022-11-22 02:08:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_update_hw_stats [2022-11-22 02:08:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem32 [2022-11-22 02:08:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem32 [2022-11-22 02:08:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 02:08:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 02:08:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:08:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:08:29,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:08:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 02:08:29,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 02:08:29,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 02:08:29,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 02:08:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_dbg [2022-11-22 02:08:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_dbg [2022-11-22 02:08:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-22 02:08:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-22 02:08:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure alx_netif_stop [2022-11-22 02:08:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_netif_stop [2022-11-22 02:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 02:08:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 02:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:08:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:08:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:08:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 02:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_giga [2022-11-22 02:08:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_giga [2022-11-22 02:08:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure alx_poll_controller [2022-11-22 02:08:29,824 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_poll_controller [2022-11-22 02:08:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_pcie [2022-11-22 02:08:29,824 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_pcie [2022-11-22 02:08:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:08:29,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:08:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:08:29,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:08:29,825 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2022-11-22 02:08:29,825 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2022-11-22 02:08:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_reset [2022-11-22 02:08:29,826 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_reset [2022-11-22 02:08:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_legacy [2022-11-22 02:08:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_legacy [2022-11-22 02:08:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure alx_refill_rx_ring [2022-11-22 02:08:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_refill_rx_ring [2022-11-22 02:08:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_dbg [2022-11-22 02:08:29,827 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_dbg [2022-11-22 02:08:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-22 02:08:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-22 02:08:29,828 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-22 02:08:29,828 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-22 02:08:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:08:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:08:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_macaddr [2022-11-22 02:08:29,829 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_macaddr [2022-11-22 02:08:29,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:08:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:08:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2022-11-22 02:08:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2022-11-22 02:08:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure alx_speed_to_ethadv [2022-11-22 02:08:29,830 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_speed_to_ethadv [2022-11-22 02:08:29,830 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:08:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_rings [2022-11-22 02:08:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_rings [2022-11-22 02:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:08:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:08:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-22 02:08:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-22 02:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2022-11-22 02:08:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2022-11-22 02:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:08:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:08:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:08:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2022-11-22 02:08:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2022-11-22 02:08:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 02:08:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-22 02:08:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-22 02:08:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-22 02:08:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:08:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:08:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-22 02:08:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure alx_open [2022-11-22 02:08:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_open [2022-11-22 02:08:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 02:08:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 02:08:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-22 02:08:29,835 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-22 02:08:29,835 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_with_cr [2022-11-22 02:08:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_with_cr [2022-11-22 02:08:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:08:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:08:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-22 02:08:29,836 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-22 02:08:29,836 INFO L130 BoogieDeclarations]: Found specification of procedure alx_get_supported_speeds [2022-11-22 02:08:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_get_supported_speeds [2022-11-22 02:08:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:08:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:08:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_macaddr [2022-11-22 02:08:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_macaddr [2022-11-22 02:08:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_mem32 [2022-11-22 02:08:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_mem32 [2022-11-22 02:08:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2022-11-22 02:08:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2022-11-22 02:08:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:08:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:08:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-22 02:08:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-22 02:08:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2022-11-22 02:08:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2022-11-22 02:08:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-22 02:08:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-22 02:08:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:08:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:08:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:08:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 02:08:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 02:08:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit_rings [2022-11-22 02:08:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit_rings [2022-11-22 02:08:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_reg [2022-11-22 02:08:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_reg [2022-11-22 02:08:29,842 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-22 02:08:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-22 02:08:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_buffers [2022-11-22 02:08:29,847 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_buffers [2022-11-22 02:08:29,847 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:08:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:08:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-22 02:08:29,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-22 02:08:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:08:29,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:08:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_mdio_idle [2022-11-22 02:08:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_mdio_idle [2022-11-22 02:08:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:08:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-22 02:08:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-22 02:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_handle [2022-11-22 02:08:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_handle [2022-11-22 02:08:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 02:08:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 02:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-22 02:08:29,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-22 02:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 02:08:29,853 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 02:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:08:29,853 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:08:29,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-22 02:08:29,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-22 02:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:08:29,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-22 02:08:29,854 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-22 02:08:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_alx_driver_exit_15_2 [2022-11-22 02:08:29,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_alx_driver_exit_15_2 [2022-11-22 02:08:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:08:29,855 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:08:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:08:29,855 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:08:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure alx_is_rev_a [2022-11-22 02:08:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_is_rev_a [2022-11-22 02:08:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:08:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:08:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_core [2022-11-22 02:08:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_core [2022-11-22 02:08:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:08:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:08:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_ext [2022-11-22 02:08:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_ext [2022-11-22 02:08:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:08:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:08:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:08:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_phy_link [2022-11-22 02:08:29,858 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_phy_link [2022-11-22 02:08:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 02:08:29,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-22 02:08:29,858 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit [2022-11-22 02:08:29,858 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit [2022-11-22 02:08:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tpd_avail [2022-11-22 02:08:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tpd_avail [2022-11-22 02:08:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure alx_setup_speed_duplex [2022-11-22 02:08:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_setup_speed_duplex [2022-11-22 02:08:29,859 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 02:08:29,859 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 02:08:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_stop [2022-11-22 02:08:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_stop [2022-11-22 02:08:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 02:08:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 02:08:29,860 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-22 02:08:29,860 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-22 02:08:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure alx_enable_aspm [2022-11-22 02:08:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_enable_aspm [2022-11-22 02:08:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_rx_mode [2022-11-22 02:08:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_rx_mode [2022-11-22 02:08:29,861 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_revision [2022-11-22 02:08:29,861 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_revision [2022-11-22 02:08:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_set_rx_mode [2022-11-22 02:08:29,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_set_rx_mode [2022-11-22 02:08:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_write_phy_reg [2022-11-22 02:08:29,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_write_phy_reg [2022-11-22 02:08:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-22 02:08:29,862 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-22 02:08:29,862 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 02:08:29,863 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 02:08:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:08:29,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:08:29,863 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 02:08:29,863 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 02:08:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2022-11-22 02:08:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2022-11-22 02:08:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure alx_configure [2022-11-22 02:08:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_configure [2022-11-22 02:08:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_phy [2022-11-22 02:08:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_phy [2022-11-22 02:08:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-22 02:08:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-22 02:08:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 02:08:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 02:08:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-22 02:08:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-22 02:08:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 02:08:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 02:08:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:08:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:08:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:08:29,866 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le64 [2022-11-22 02:08:29,866 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le64 [2022-11-22 02:08:29,867 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_mac [2022-11-22 02:08:29,867 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_mac [2022-11-22 02:08:31,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:08:31,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:08:31,328 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:08:43,816 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:08:44,258 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:08:47,695 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:08:47,695 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-22 02:08:47,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:47 BoogieIcfgContainer [2022-11-22 02:08:47,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:08:47,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:08:47,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:08:47,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:08:47,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:08:22" (1/3) ... [2022-11-22 02:08:47,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f16089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:47, skipping insertion in model container [2022-11-22 02:08:47,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:08:28" (2/3) ... [2022-11-22 02:08:47,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f16089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:08:47, skipping insertion in model container [2022-11-22 02:08:47,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:08:47" (3/3) ... [2022-11-22 02:08:47,718 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2022-11-22 02:08:47,744 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:08:47,744 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 02:08:47,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:08:47,888 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b27d485, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:08:47,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 02:08:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 2317 states, 1331 states have (on average 1.270473328324568) internal successors, (1691), 1376 states have internal predecessors, (1691), 828 states have call successors, (828), 160 states have call predecessors, (828), 159 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) [2022-11-22 02:08:47,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-22 02:08:47,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:47,948 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:08:47,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:08:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash -54691785, now seen corresponding path program 1 times [2022-11-22 02:08:47,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:08:47,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018983686] [2022-11-22 02:08:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:47,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:08:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-11-22 02:08:49,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:08:49,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018983686] [2022-11-22 02:08:49,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018983686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:08:49,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:08:49,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:08:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125502853] [2022-11-22 02:08:49,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:08:49,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:08:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:08:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:08:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:08:49,576 INFO L87 Difference]: Start difference. First operand has 2317 states, 1331 states have (on average 1.270473328324568) internal successors, (1691), 1376 states have internal predecessors, (1691), 828 states have call successors, (828), 160 states have call predecessors, (828), 159 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 02:08:53,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:56,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:08:57,445 INFO L93 Difference]: Finished difference Result 6622 states and 9543 transitions. [2022-11-22 02:08:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:08:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2022-11-22 02:08:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:08:57,531 INFO L225 Difference]: With dead ends: 6622 [2022-11-22 02:08:57,531 INFO L226 Difference]: Without dead ends: 4325 [2022-11-22 02:08:57,559 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:08:57,564 INFO L413 NwaCegarLoop]: 3603 mSDtfsCounter, 2962 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:08:57,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2962 Valid, 6446 Invalid, 841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 833 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 02:08:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-11-22 02:08:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4322. [2022-11-22 02:08:58,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 2486 states have (on average 1.262670957361223) internal successors, (3139), 2563 states have internal predecessors, (3139), 1528 states have call successors, (1528), 307 states have call predecessors, (1528), 306 states have return successors, (1525), 1503 states have call predecessors, (1525), 1525 states have call successors, (1525) [2022-11-22 02:08:58,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 6192 transitions. [2022-11-22 02:08:58,201 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 6192 transitions. Word has length 180 [2022-11-22 02:08:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:08:58,206 INFO L495 AbstractCegarLoop]: Abstraction has 4322 states and 6192 transitions. [2022-11-22 02:08:58,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-22 02:08:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 6192 transitions. [2022-11-22 02:08:58,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-22 02:08:58,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:58,237 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:08:58,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:08:58,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:08:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -193446582, now seen corresponding path program 1 times [2022-11-22 02:08:58,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:08:58,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51576610] [2022-11-22 02:08:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:08:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2022-11-22 02:08:59,450 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:08:59,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51576610] [2022-11-22 02:08:59,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51576610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:08:59,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:08:59,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:08:59,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375848300] [2022-11-22 02:08:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:08:59,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:08:59,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:08:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:08:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:08:59,455 INFO L87 Difference]: Start difference. First operand 4322 states and 6192 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 02:09:01,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:04,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:07,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:08,009 INFO L93 Difference]: Finished difference Result 10321 states and 14749 transitions. [2022-11-22 02:09:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:09:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 199 [2022-11-22 02:09:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:08,051 INFO L225 Difference]: With dead ends: 10321 [2022-11-22 02:09:08,052 INFO L226 Difference]: Without dead ends: 6032 [2022-11-22 02:09:08,071 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:09:08,072 INFO L413 NwaCegarLoop]: 3509 mSDtfsCounter, 2666 mSDsluCounter, 2811 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 6320 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:08,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 6320 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 871 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2022-11-22 02:09:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2022-11-22 02:09:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 6023. [2022-11-22 02:09:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6023 states, 3479 states have (on average 1.2549583213567117) internal successors, (4366), 3584 states have internal predecessors, (4366), 2102 states have call successors, (2102), 442 states have call predecessors, (2102), 440 states have return successors, (2099), 2065 states have call predecessors, (2099), 2099 states have call successors, (2099) [2022-11-22 02:09:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 8567 transitions. [2022-11-22 02:09:08,472 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 8567 transitions. Word has length 199 [2022-11-22 02:09:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:08,473 INFO L495 AbstractCegarLoop]: Abstraction has 6023 states and 8567 transitions. [2022-11-22 02:09:08,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 02:09:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 8567 transitions. [2022-11-22 02:09:08,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-22 02:09:08,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:08,484 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2022-11-22 02:09:08,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:09:08,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:09:08,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash 169121026, now seen corresponding path program 1 times [2022-11-22 02:09:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:08,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269163596] [2022-11-22 02:09:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:09,057 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2022-11-22 02:09:09,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:09,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269163596] [2022-11-22 02:09:09,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269163596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:09,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:09:09,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:09:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699019484] [2022-11-22 02:09:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:09:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:09,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:09:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:09:09,061 INFO L87 Difference]: Start difference. First operand 6023 states and 8567 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 02:09:15,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:15,589 INFO L93 Difference]: Finished difference Result 15841 states and 22528 transitions. [2022-11-22 02:09:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:09:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 212 [2022-11-22 02:09:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:15,660 INFO L225 Difference]: With dead ends: 15841 [2022-11-22 02:09:15,661 INFO L226 Difference]: Without dead ends: 9851 [2022-11-22 02:09:15,698 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:09:15,701 INFO L413 NwaCegarLoop]: 3573 mSDtfsCounter, 2893 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 6402 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:15,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 6402 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 847 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:09:15,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9851 states. [2022-11-22 02:09:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9851 to 9837. [2022-11-22 02:09:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9837 states, 5676 states have (on average 1.2517618040873855) internal successors, (7105), 5858 states have internal predecessors, (7105), 3433 states have call successors, (3433), 729 states have call predecessors, (3433), 726 states have return successors, (3430), 3364 states have call predecessors, (3430), 3430 states have call successors, (3430) [2022-11-22 02:09:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9837 states to 9837 states and 13968 transitions. [2022-11-22 02:09:16,359 INFO L78 Accepts]: Start accepts. Automaton has 9837 states and 13968 transitions. Word has length 212 [2022-11-22 02:09:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:16,361 INFO L495 AbstractCegarLoop]: Abstraction has 9837 states and 13968 transitions. [2022-11-22 02:09:16,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-22 02:09:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 9837 states and 13968 transitions. [2022-11-22 02:09:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-22 02:09:16,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:16,373 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:09:16,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:09:16,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:09:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1122544168, now seen corresponding path program 1 times [2022-11-22 02:09:16,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:16,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083886951] [2022-11-22 02:09:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:16,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2022-11-22 02:09:17,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:17,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083886951] [2022-11-22 02:09:17,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083886951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:17,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:09:17,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:09:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918978292] [2022-11-22 02:09:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:17,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:09:17,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:17,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:09:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:09:17,691 INFO L87 Difference]: Start difference. First operand 9837 states and 13968 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:09:20,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:22,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:25,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:27,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:28,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:28,644 INFO L93 Difference]: Finished difference Result 17707 states and 25150 transitions. [2022-11-22 02:09:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:09:28,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 222 [2022-11-22 02:09:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:28,790 INFO L225 Difference]: With dead ends: 17707 [2022-11-22 02:09:28,790 INFO L226 Difference]: Without dead ends: 17668 [2022-11-22 02:09:28,812 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:09:28,813 INFO L413 NwaCegarLoop]: 3591 mSDtfsCounter, 2983 mSDsluCounter, 6395 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 9986 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:28,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2983 Valid, 9986 Invalid, 1226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1224 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2022-11-22 02:09:28,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17668 states. [2022-11-22 02:09:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17668 to 17665. [2022-11-22 02:09:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17665 states, 10198 states have (on average 1.2521082565208865) internal successors, (12769), 10518 states have internal predecessors, (12769), 6155 states have call successors, (6155), 1313 states have call predecessors, (6155), 1310 states have return successors, (6152), 6040 states have call predecessors, (6152), 6152 states have call successors, (6152) [2022-11-22 02:09:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17665 states to 17665 states and 25076 transitions. [2022-11-22 02:09:30,305 INFO L78 Accepts]: Start accepts. Automaton has 17665 states and 25076 transitions. Word has length 222 [2022-11-22 02:09:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:30,306 INFO L495 AbstractCegarLoop]: Abstraction has 17665 states and 25076 transitions. [2022-11-22 02:09:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 02:09:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 17665 states and 25076 transitions. [2022-11-22 02:09:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-22 02:09:30,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:30,329 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 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] [2022-11-22 02:09:30,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:09:30,329 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:09:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash 712360235, now seen corresponding path program 1 times [2022-11-22 02:09:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:30,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311814854] [2022-11-22 02:09:30,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:30,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2022-11-22 02:09:31,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:31,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311814854] [2022-11-22 02:09:31,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311814854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:31,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:09:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:09:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506928375] [2022-11-22 02:09:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:09:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:09:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:09:31,071 INFO L87 Difference]: Start difference. First operand 17665 states and 25076 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-11-22 02:09:32,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:38,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:39,428 INFO L93 Difference]: Finished difference Result 40950 states and 58149 transitions. [2022-11-22 02:09:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:09:39,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 246 [2022-11-22 02:09:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:39,601 INFO L225 Difference]: With dead ends: 40950 [2022-11-22 02:09:39,601 INFO L226 Difference]: Without dead ends: 25106 [2022-11-22 02:09:39,700 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:09:39,701 INFO L413 NwaCegarLoop]: 5114 mSDtfsCounter, 2660 mSDsluCounter, 2809 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:39,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 7923 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1184 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-22 02:09:39,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25106 states. [2022-11-22 02:09:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25106 to 25093. [2022-11-22 02:09:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25093 states, 14496 states have (on average 1.2506208609271523) internal successors, (18129), 14950 states have internal predecessors, (18129), 8723 states have call successors, (8723), 1877 states have call predecessors, (8723), 1872 states have return successors, (8720), 8556 states have call predecessors, (8720), 8720 states have call successors, (8720) [2022-11-22 02:09:41,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25093 states to 25093 states and 35572 transitions. [2022-11-22 02:09:41,873 INFO L78 Accepts]: Start accepts. Automaton has 25093 states and 35572 transitions. Word has length 246 [2022-11-22 02:09:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:41,874 INFO L495 AbstractCegarLoop]: Abstraction has 25093 states and 35572 transitions. [2022-11-22 02:09:41,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2022-11-22 02:09:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 25093 states and 35572 transitions. [2022-11-22 02:09:41,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-22 02:09:41,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:41,917 INFO L195 NwaCegarLoop]: trace histogram [21, 16, 16, 16, 16, 16, 16, 6, 6, 3, 3, 3, 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] [2022-11-22 02:09:41,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:09:41,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:09:41,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1928601196, now seen corresponding path program 1 times [2022-11-22 02:09:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:41,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501022192] [2022-11-22 02:09:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:41,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2022-11-22 02:09:42,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:42,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501022192] [2022-11-22 02:09:42,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501022192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:42,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:09:42,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:09:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345820701] [2022-11-22 02:09:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:09:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:42,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:09:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:09:42,440 INFO L87 Difference]: Start difference. First operand 25093 states and 35572 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:09:45,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:47,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:51,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:52,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:52,040 INFO L93 Difference]: Finished difference Result 59754 states and 84741 transitions. [2022-11-22 02:09:52,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:09:52,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 269 [2022-11-22 02:09:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:52,372 INFO L225 Difference]: With dead ends: 59754 [2022-11-22 02:09:52,373 INFO L226 Difference]: Without dead ends: 36482 [2022-11-22 02:09:52,466 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:09:52,467 INFO L413 NwaCegarLoop]: 5385 mSDtfsCounter, 2893 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 8212 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:52,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2893 Valid, 8212 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1215 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-11-22 02:09:52,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36482 states. [2022-11-22 02:09:54,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36482 to 36460. [2022-11-22 02:09:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36460 states, 21054 states have (on average 1.2498337608055476) internal successors, (26314), 21725 states have internal predecessors, (26314), 12677 states have call successors, (12677), 2734 states have call predecessors, (12677), 2727 states have return successors, (12674), 12425 states have call predecessors, (12674), 12674 states have call successors, (12674) [2022-11-22 02:09:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36460 states to 36460 states and 51665 transitions. [2022-11-22 02:09:55,158 INFO L78 Accepts]: Start accepts. Automaton has 36460 states and 51665 transitions. Word has length 269 [2022-11-22 02:09:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:55,159 INFO L495 AbstractCegarLoop]: Abstraction has 36460 states and 51665 transitions. [2022-11-22 02:09:55,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-22 02:09:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 36460 states and 51665 transitions. [2022-11-22 02:09:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-22 02:09:55,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:55,215 INFO L195 NwaCegarLoop]: trace histogram [23, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:09:55,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:09:55,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:09:55,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1837952694, now seen corresponding path program 1 times [2022-11-22 02:09:55,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:55,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836456155] [2022-11-22 02:09:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2022-11-22 02:09:56,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:56,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836456155] [2022-11-22 02:09:56,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836456155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:56,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:09:56,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:09:56,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754238441] [2022-11-22 02:09:56,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:56,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:09:56,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:56,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:09:56,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:09:56,581 INFO L87 Difference]: Start difference. First operand 36460 states and 51665 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:09:58,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:00,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:04,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:10:06,774 INFO L93 Difference]: Finished difference Result 36483 states and 51689 transitions. [2022-11-22 02:10:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:10:06,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 294 [2022-11-22 02:10:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:10:07,167 INFO L225 Difference]: With dead ends: 36483 [2022-11-22 02:10:07,167 INFO L226 Difference]: Without dead ends: 36481 [2022-11-22 02:10:07,185 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:10:07,187 INFO L413 NwaCegarLoop]: 3590 mSDtfsCounter, 2934 mSDsluCounter, 6395 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2934 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:10:07,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2934 Valid, 9985 Invalid, 1226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1224 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-22 02:10:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36481 states. [2022-11-22 02:10:09,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36481 to 36460. [2022-11-22 02:10:09,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36460 states, 21054 states have (on average 1.2495962762420443) internal successors, (26309), 21725 states have internal predecessors, (26309), 12677 states have call successors, (12677), 2734 states have call predecessors, (12677), 2727 states have return successors, (12674), 12425 states have call predecessors, (12674), 12674 states have call successors, (12674) [2022-11-22 02:10:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36460 states to 36460 states and 51660 transitions. [2022-11-22 02:10:09,666 INFO L78 Accepts]: Start accepts. Automaton has 36460 states and 51660 transitions. Word has length 294 [2022-11-22 02:10:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:10:09,668 INFO L495 AbstractCegarLoop]: Abstraction has 36460 states and 51660 transitions. [2022-11-22 02:10:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-22 02:10:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 36460 states and 51660 transitions. [2022-11-22 02:10:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-22 02:10:09,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:09,804 INFO L195 NwaCegarLoop]: trace histogram [25, 18, 18, 18, 18, 18, 18, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:10:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:10:09,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:10:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash -397975034, now seen corresponding path program 1 times [2022-11-22 02:10:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:09,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874394403] [2022-11-22 02:10:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:09,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:10:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2022-11-22 02:10:12,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:12,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874394403] [2022-11-22 02:10:12,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874394403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:10:12,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:10:12,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:10:12,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985769445] [2022-11-22 02:10:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:10:12,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:10:12,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:10:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:10:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:10:12,547 INFO L87 Difference]: Start difference. First operand 36460 states and 51660 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-22 02:10:15,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:19,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:10:20,506 INFO L93 Difference]: Finished difference Result 36480 states and 51682 transitions. [2022-11-22 02:10:20,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:10:20,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 432 [2022-11-22 02:10:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:10:20,713 INFO L225 Difference]: With dead ends: 36480 [2022-11-22 02:10:20,713 INFO L226 Difference]: Without dead ends: 36478 [2022-11-22 02:10:20,737 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:10:20,738 INFO L413 NwaCegarLoop]: 2852 mSDtfsCounter, 3121 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3121 SdHoareTripleChecker+Valid, 5702 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:10:20,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3121 Valid, 5702 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 816 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-22 02:10:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36478 states. [2022-11-22 02:10:22,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36478 to 36458. [2022-11-22 02:10:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36458 states, 21053 states have (on average 1.2493706360138697) internal successors, (26303), 21723 states have internal predecessors, (26303), 12677 states have call successors, (12677), 2734 states have call predecessors, (12677), 2727 states have return successors, (12674), 12425 states have call predecessors, (12674), 12674 states have call successors, (12674) [2022-11-22 02:10:22,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36458 states to 36458 states and 51654 transitions. [2022-11-22 02:10:22,906 INFO L78 Accepts]: Start accepts. Automaton has 36458 states and 51654 transitions. Word has length 432 [2022-11-22 02:10:22,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:10:22,907 INFO L495 AbstractCegarLoop]: Abstraction has 36458 states and 51654 transitions. [2022-11-22 02:10:22,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-22 02:10:22,908 INFO L276 IsEmpty]: Start isEmpty. Operand 36458 states and 51654 transitions. [2022-11-22 02:10:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-22 02:10:23,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:23,001 INFO L195 NwaCegarLoop]: trace histogram [27, 18, 18, 18, 18, 18, 18, 13, 13, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:10:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:10:23,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:10:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash -143956960, now seen corresponding path program 1 times [2022-11-22 02:10:23,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:23,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272710826] [2022-11-22 02:10:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:23,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:10:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2022-11-22 02:10:25,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:25,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272710826] [2022-11-22 02:10:25,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272710826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:10:25,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:10:25,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:10:25,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753270676] [2022-11-22 02:10:25,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:10:25,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:10:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:10:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:10:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:10:25,923 INFO L87 Difference]: Start difference. First operand 36458 states and 51654 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-22 02:10:28,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:33,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:10:35,389 INFO L93 Difference]: Finished difference Result 72845 states and 103202 transitions. [2022-11-22 02:10:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:10:35,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 469 [2022-11-22 02:10:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:10:35,935 INFO L225 Difference]: With dead ends: 72845 [2022-11-22 02:10:35,935 INFO L226 Difference]: Without dead ends: 72769 [2022-11-22 02:10:35,971 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:10:35,974 INFO L413 NwaCegarLoop]: 3638 mSDtfsCounter, 3106 mSDsluCounter, 6440 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3106 SdHoareTripleChecker+Valid, 10078 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:10:35,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3106 Valid, 10078 Invalid, 1222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1220 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-22 02:10:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72769 states. [2022-11-22 02:10:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72769 to 72750. [2022-11-22 02:10:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72750 states, 42036 states have (on average 1.2491435912075364) internal successors, (52509), 43369 states have internal predecessors, (52509), 25262 states have call successors, (25262), 5458 states have call predecessors, (25262), 5451 states have return successors, (25259), 24772 states have call predecessors, (25259), 25259 states have call successors, (25259) [2022-11-22 02:10:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72750 states to 72750 states and 103030 transitions. [2022-11-22 02:10:40,217 INFO L78 Accepts]: Start accepts. Automaton has 72750 states and 103030 transitions. Word has length 469 [2022-11-22 02:10:40,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:10:40,219 INFO L495 AbstractCegarLoop]: Abstraction has 72750 states and 103030 transitions. [2022-11-22 02:10:40,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-22 02:10:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72750 states and 103030 transitions. [2022-11-22 02:10:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-22 02:10:40,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:40,769 INFO L195 NwaCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:10:40,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:10:40,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:10:40,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1675292814, now seen corresponding path program 1 times [2022-11-22 02:10:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:40,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275970925] [2022-11-22 02:10:40,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:40,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:10:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 1974 trivial. 0 not checked. [2022-11-22 02:10:41,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:41,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275970925] [2022-11-22 02:10:41,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275970925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:10:41,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:10:41,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:10:41,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815730409] [2022-11-22 02:10:41,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:10:41,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:10:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:10:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:10:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:10:41,755 INFO L87 Difference]: Start difference. First operand 72750 states and 103030 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2022-11-22 02:10:45,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:47,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:10:52,193 INFO L93 Difference]: Finished difference Result 148637 states and 209426 transitions. [2022-11-22 02:10:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:10:52,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 508 [2022-11-22 02:10:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:10:52,829 INFO L225 Difference]: With dead ends: 148637 [2022-11-22 02:10:52,829 INFO L226 Difference]: Without dead ends: 75920 [2022-11-22 02:10:53,142 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:10:53,142 INFO L413 NwaCegarLoop]: 3450 mSDtfsCounter, 2309 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 6232 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:10:53,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 6232 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 871 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-11-22 02:10:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75920 states. [2022-11-22 02:10:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75920 to 75893. [2022-11-22 02:10:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75893 states, 43707 states have (on average 1.2437367012149083) internal successors, (54360), 45199 states have internal predecessors, (54360), 25949 states have call successors, (25949), 6267 states have call predecessors, (25949), 6236 states have return successors, (25970), 25316 states have call predecessors, (25970), 25946 states have call successors, (25970) [2022-11-22 02:10:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75893 states to 75893 states and 106279 transitions. [2022-11-22 02:10:58,020 INFO L78 Accepts]: Start accepts. Automaton has 75893 states and 106279 transitions. Word has length 508 [2022-11-22 02:10:58,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:10:58,021 INFO L495 AbstractCegarLoop]: Abstraction has 75893 states and 106279 transitions. [2022-11-22 02:10:58,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2022-11-22 02:10:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 75893 states and 106279 transitions. [2022-11-22 02:10:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-11-22 02:10:58,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:58,103 INFO L195 NwaCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 13, 13, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:10:58,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:10:58,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:10:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 72654942, now seen corresponding path program 2 times [2022-11-22 02:10:58,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:58,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430589396] [2022-11-22 02:10:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:10:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2022-11-22 02:10:59,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:59,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430589396] [2022-11-22 02:10:59,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430589396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:10:59,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:10:59,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:10:59,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096041258] [2022-11-22 02:10:59,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:10:59,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:10:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:10:59,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:10:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:10:59,259 INFO L87 Difference]: Start difference. First operand 75893 states and 106279 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2022-11-22 02:11:03,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []