./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-intel-ixgb-ixgb.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_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/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_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/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_f96c8769-9237-42c8-b9b9-ff23d4d09011/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 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b --- 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 02:03:56,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:03:56,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:03:56,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:03:56,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:03:56,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:03:56,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:03:56,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:03:56,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:03:56,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:03:56,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:03:56,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:03:56,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:03:56,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:03:56,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:03:56,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:03:56,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:03:56,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:03:56,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:03:56,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:03:56,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:03:56,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:03:56,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:03:56,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:03:56,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:03:56,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:03:56,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:03:56,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:03:56,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:03:56,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:03:56,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:03:56,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:03:56,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:03:56,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:03:56,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:03:56,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:03:56,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:03:56,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:03:56,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:03:56,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:03:56,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:03:56,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:03:56,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:03:56,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:03:56,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:03:56,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:03:56,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:03:56,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:03:56,965 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:03:56,965 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:03:56,966 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:03:56,966 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:03:56,966 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:03:56,966 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:03:56,967 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:03:56,967 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:03:56,967 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:03:56,967 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:03:56,968 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:03:56,968 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:03:56,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:03:56,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:03:56,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:03:56,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:03:56,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:03:56,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:03:56,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:03:56,970 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:03:56,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:03:56,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:03:56,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:03:56,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:03:56,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:03:56,972 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:03:56,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:03:56,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:03:56,972 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:03:56,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:03:56,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:03:56,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:03:56,973 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 484c71f67ef44adda28419ba4f7367133d47a44b7b25589681c020e12726250b [2022-11-22 02:03:57,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:03:57,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:03:57,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:03:57,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:03:57,258 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:03:57,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-22 02:04:00,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:04:01,008 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:04:01,009 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-22 02:04:01,091 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/data/a16673259/8cb007408f344f7dae31cc2309f05e96/FLAG7745b1003 [2022-11-22 02:04:01,112 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/data/a16673259/8cb007408f344f7dae31cc2309f05e96 [2022-11-22 02:04:01,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:04:01,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:04:01,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:04:01,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:04:01,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:04:01,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:04:01" (1/1) ... [2022-11-22 02:04:01,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6b0b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:01, skipping insertion in model container [2022-11-22 02:04:01,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:04:01" (1/1) ... [2022-11-22 02:04:01,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:04:01,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:04:05,155 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486836,486849] [2022-11-22 02:04:05,159 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486983,486996] [2022-11-22 02:04:05,160 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487122,487135] [2022-11-22 02:04:05,160 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487280,487293] [2022-11-22 02:04:05,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:04:05,344 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:04:05,916 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486836,486849] [2022-11-22 02:04:05,916 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[486983,486996] [2022-11-22 02:04:05,917 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487122,487135] [2022-11-22 02:04:05,918 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_f96c8769-9237-42c8-b9b9-ff23d4d09011/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i[487280,487293] [2022-11-22 02:04:05,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:04:06,249 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:04:06,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06 WrapperNode [2022-11-22 02:04:06,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:04:06,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:04:06,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:04:06,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:04:06,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:06,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:06,855 INFO L138 Inliner]: procedures = 480, calls = 6076, calls flagged for inlining = 277, calls inlined = 258, statements flattened = 11916 [2022-11-22 02:04:06,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:04:06,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:04:06,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:04:06,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:04:06,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:06,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:06,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:06,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:07,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:07,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:07,440 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:07,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:07,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:04:07,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:04:07,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:04:07,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:04:07,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (1/1) ... [2022-11-22 02:04:07,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:04:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:04:07,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:04:07,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f96c8769-9237-42c8-b9b9-ff23d4d09011/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:04:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:04:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:04:07,812 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:04:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:04:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_vfta [2022-11-22 02:04:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_vfta [2022-11-22 02:04:07,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:04:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:04:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_standby_eeprom [2022-11-22 02:04:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_standby_eeprom [2022-11-22 02:04:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-22 02:04:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-22 02:04:07,814 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:04:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:04:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 02:04:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 02:04:07,815 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:04:07,815 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:04:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_alloc_rx_buffers [2022-11-22 02:04:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_alloc_rx_buffers [2022-11-22 02:04:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure mac_addr_valid [2022-11-22 02:04:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure mac_addr_valid [2022-11-22 02:04:07,816 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_vlan_rx_add_vid [2022-11-22 02:04:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_vlan_rx_add_vid [2022-11-22 02:04:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_tx_resources [2022-11-22 02:04:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_tx_resources [2022-11-22 02:04:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 02:04:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 02:04:07,817 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_multi [2022-11-22 02:04:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_multi [2022-11-22 02:04:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_rar_set [2022-11-22 02:04:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_rar_set [2022-11-22 02:04:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:04:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:04:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:04:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:04:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:04:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:04:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-22 02:04:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-22 02:04:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_io_resume [2022-11-22 02:04:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_io_resume [2022-11-22 02:04:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:04:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:04:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:04:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:04:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:04:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-22 02:04:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-22 02:04:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_eeprom_checksum [2022-11-22 02:04:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_eeprom_checksum [2022-11-22 02:04:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 02:04:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 02:04:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_netpoll [2022-11-22 02:04:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_netpoll [2022-11-22 02:04:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:04:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:04:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:04:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_raise_clock [2022-11-22 02:04:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_raise_clock [2022-11-22 02:04:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_eeprom [2022-11-22 02:04:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_eeprom [2022-11-22 02:04:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:04:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:04:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_identify_xpak_vendor [2022-11-22 02:04:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_identify_xpak_vendor [2022-11-22 02:04:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:04:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:04:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:04:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_mac_reset [2022-11-22 02:04:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_mac_reset [2022-11-22 02:04:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_eeprom [2022-11-22 02:04:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_eeprom [2022-11-22 02:04:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:04:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_free_rx_resources [2022-11-22 02:04:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_free_rx_resources [2022-11-22 02:04:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:04:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:04:07,839 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-22 02:04:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-22 02:04:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:04:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:04:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:04:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:04:07,840 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-22 02:04:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-22 02:04:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:04:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:04:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:04:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:04:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_regs_len [2022-11-22 02:04:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_regs_len [2022-11-22 02:04:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-22 02:04:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-22 02:04:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 02:04:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 02:04:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_read_phy_reg [2022-11-22 02:04:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_read_phy_reg [2022-11-22 02:04:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_for_link [2022-11-22 02:04:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_for_link [2022-11-22 02:04:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_validate_option [2022-11-22 02:04:07,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_validate_option [2022-11-22 02:04:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:04:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:04:07,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:04:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:04:07,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:04:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 02:04:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 02:04:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-22 02:04:07,845 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-22 02:04:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:04:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-22 02:04:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-22 02:04:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:04:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:04:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:04:07,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:04:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:04:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:04:07,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:04:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_lower_clock [2022-11-22 02:04:07,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_lower_clock [2022-11-22 02:04:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_reset [2022-11-22 02:04:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_reset [2022-11-22 02:04:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:04:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:04:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_remove [2022-11-22 02:04:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_remove [2022-11-22 02:04:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 02:04:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 02:04:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_len [2022-11-22 02:04:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_len [2022-11-22 02:04:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_up [2022-11-22 02:04:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_up [2022-11-22 02:04:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_irq_enable [2022-11-22 02:04:07,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_irq_enable [2022-11-22 02:04:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-22 02:04:07,850 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-22 02:04:07,850 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:04:07,851 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:04:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:04:07,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:04:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_tx_resources [2022-11-22 02:04:07,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_tx_resources [2022-11-22 02:04:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_maybe_stop_tx [2022-11-22 02:04:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_maybe_stop_tx [2022-11-22 02:04:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_intr [2022-11-22 02:04:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_intr [2022-11-22 02:04:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 02:04:07,852 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 02:04:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:04:07,853 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:04:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_open [2022-11-22 02:04:07,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_open [2022-11-22 02:04:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:04:07,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:04:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-22 02:04:07,854 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-22 02:04:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-22 02:04:07,854 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-22 02:04:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:04:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:04:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:04:07,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:04:07,855 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 02:04:07,855 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 02:04:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:04:07,855 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:04:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-22 02:04:07,856 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-22 02:04:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_update_stats [2022-11-22 02:04:07,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_update_stats [2022-11-22 02:04:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:04:07,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:04:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_check_and_get_eeprom_data [2022-11-22 02:04:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_check_and_get_eeprom_data [2022-11-22 02:04:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-22 02:04:07,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-22 02:04:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:04:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:04:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:04:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:04:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2022-11-22 02:04:07,858 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2022-11-22 02:04:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_close [2022-11-22 02:04:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_close [2022-11-22 02:04:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-22 02:04:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-22 02:04:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-22 02:04:07,859 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-22 02:04:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:04:07,860 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:04:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-22 02:04:07,860 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-22 02:04:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:04:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-22 02:04:07,861 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-22 02:04:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:04:07,861 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:04:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:04:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-22 02:04:07,861 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-22 02:04:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:04:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:04:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-22 02:04:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-22 02:04:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-22 02:04:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:04:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:04:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:04:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:04:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_link_reset [2022-11-22 02:04:07,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_link_reset [2022-11-22 02:04:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_set_speed_duplex [2022-11-22 02:04:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_set_speed_duplex [2022-11-22 02:04:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-22 02:04:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-22 02:04:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:04:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:04:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:04:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:04:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2022-11-22 02:04:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2022-11-22 02:04:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:04:07,865 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:04:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_unmap_and_free_tx_resource [2022-11-22 02:04:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_unmap_and_free_tx_resource [2022-11-22 02:04:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-22 02:04:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-22 02:04:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:04:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:04:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:04:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_eeprom [2022-11-22 02:04:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_eeprom [2022-11-22 02:04:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:04:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:04:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_write_phy_reg [2022-11-22 02:04:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_write_phy_reg [2022-11-22 02:04:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 02:04:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 02:04:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_ee_mac_addr [2022-11-22 02:04:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_ee_mac_addr [2022-11-22 02:04:07,869 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-22 02:04:07,869 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-22 02:04:07,869 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-22 02:04:07,869 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-22 02:04:07,869 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_tx_ring [2022-11-22 02:04:07,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_tx_ring [2022-11-22 02:04:07,870 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2022-11-22 02:04:07,870 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2022-11-22 02:04:07,870 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 02:04:07,870 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 02:04:07,870 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_clean_rx_ring [2022-11-22 02:04:07,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_clean_rx_ring [2022-11-22 02:04:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_shift_out_bits [2022-11-22 02:04:07,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_shift_out_bits [2022-11-22 02:04:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_down [2022-11-22 02:04:07,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_down [2022-11-22 02:04:07,871 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_tx_timeout [2022-11-22 02:04:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_tx_timeout [2022-11-22 02:04:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_setup_rx_resources [2022-11-22 02:04:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_setup_rx_resources [2022-11-22 02:04:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:04:07,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:04:07,872 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 02:04:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 02:04:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 02:04:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-22 02:04:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-22 02:04:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-22 02:04:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-22 02:04:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-22 02:04:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 02:04:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 02:04:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:04:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:04:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:04:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-22 02:04:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure ixgb_get_eeprom_data [2022-11-22 02:04:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgb_get_eeprom_data [2022-11-22 02:04:09,392 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:04:09,395 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:04:09,764 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:04:37,630 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:04:38,018 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:04:40,934 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:04:40,934 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:04:40,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:04:40 BoogieIcfgContainer [2022-11-22 02:04:40,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:04:40,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:04:40,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:04:40,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:04:40,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:04:01" (1/3) ... [2022-11-22 02:04:40,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f94a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:04:40, skipping insertion in model container [2022-11-22 02:04:40,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:04:06" (2/3) ... [2022-11-22 02:04:40,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f94a783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:04:40, skipping insertion in model container [2022-11-22 02:04:40,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:04:40" (3/3) ... [2022-11-22 02:04:40,951 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgb-ixgb.cil.i [2022-11-22 02:04:40,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:04:40,970 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 02:04:41,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:04:41,095 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;@8188ec7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:04:41,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 02:04:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 2521 states, 1466 states have (on average 1.2462482946793998) internal successors, (1827), 1501 states have internal predecessors, (1827), 921 states have call successors, (921), 133 states have call predecessors, (921), 132 states have return successors, (916), 906 states have call predecessors, (916), 916 states have call successors, (916) [2022-11-22 02:04:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-22 02:04:41,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:41,141 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] [2022-11-22 02:04:41,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:04:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:41,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1301646126, now seen corresponding path program 1 times [2022-11-22 02:04:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:41,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322098939] [2022-11-22 02:04:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:42,594 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 02:04:42,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:42,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322098939] [2022-11-22 02:04:42,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322098939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:42,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:42,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:04:42,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305597189] [2022-11-22 02:04:42,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:42,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:42,650 INFO L87 Difference]: Start difference. First operand has 2521 states, 1466 states have (on average 1.2462482946793998) internal successors, (1827), 1501 states have internal predecessors, (1827), 921 states have call successors, (921), 133 states have call predecessors, (921), 132 states have return successors, (916), 906 states have call predecessors, (916), 916 states have call successors, (916) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 02:04:45,384 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 02:04:50,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:55,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:04:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:04:55,851 INFO L93 Difference]: Finished difference Result 7424 states and 10891 transitions. [2022-11-22 02:04:55,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:04:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 176 [2022-11-22 02:04:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:04:55,909 INFO L225 Difference]: With dead ends: 7424 [2022-11-22 02:04:55,909 INFO L226 Difference]: Without dead ends: 4918 [2022-11-22 02:04:55,933 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 02:04:55,936 INFO L413 NwaCegarLoop]: 4120 mSDtfsCounter, 3527 mSDsluCounter, 3161 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 7281 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:04:55,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 7281 Invalid, 948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 943 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-11-22 02:04:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4918 states. [2022-11-22 02:04:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4918 to 4914. [2022-11-22 02:04:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 2862 states have (on average 1.2403913347309574) internal successors, (3550), 2929 states have internal predecessors, (3550), 1788 states have call successors, (1788), 263 states have call predecessors, (1788), 262 states have return successors, (1786), 1764 states have call predecessors, (1786), 1786 states have call successors, (1786) [2022-11-22 02:04:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 7124 transitions. [2022-11-22 02:04:56,644 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 7124 transitions. Word has length 176 [2022-11-22 02:04:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:04:56,645 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 7124 transitions. [2022-11-22 02:04:56,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 02:04:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 7124 transitions. [2022-11-22 02:04:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-22 02:04:56,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:04:56,654 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] [2022-11-22 02:04:56,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:04:56,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:04:56,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:04:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 97203768, now seen corresponding path program 1 times [2022-11-22 02:04:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:04:56,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939170040] [2022-11-22 02:04:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:04:56,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:04:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:04:57,495 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 02:04:57,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:04:57,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939170040] [2022-11-22 02:04:57,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939170040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:04:57,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:04:57,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:04:57,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445470956] [2022-11-22 02:04:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:04:57,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:04:57,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:04:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:04:57,499 INFO L87 Difference]: Start difference. First operand 4914 states and 7124 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 02:05:00,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:11,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:12,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:12,156 INFO L93 Difference]: Finished difference Result 11332 states and 16434 transitions. [2022-11-22 02:05:12,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:05:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 197 [2022-11-22 02:05:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:12,221 INFO L225 Difference]: With dead ends: 11332 [2022-11-22 02:05:12,222 INFO L226 Difference]: Without dead ends: 6451 [2022-11-22 02:05:12,254 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 02:05:12,255 INFO L413 NwaCegarLoop]: 4025 mSDtfsCounter, 2846 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2846 SdHoareTripleChecker+Valid, 7151 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:12,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2846 Valid, 7151 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1004 Invalid, 2 Unknown, 0 Unchecked, 14.2s Time] [2022-11-22 02:05:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6451 states. [2022-11-22 02:05:12,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6451 to 6442. [2022-11-22 02:05:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6442 states, 3742 states have (on average 1.2279529663281668) internal successors, (4595), 3820 states have internal predecessors, (4595), 2363 states have call successors, (2363), 336 states have call predecessors, (2363), 335 states have return successors, (2361), 2334 states have call predecessors, (2361), 2361 states have call successors, (2361) [2022-11-22 02:05:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6442 states to 6442 states and 9319 transitions. [2022-11-22 02:05:13,055 INFO L78 Accepts]: Start accepts. Automaton has 6442 states and 9319 transitions. Word has length 197 [2022-11-22 02:05:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:13,056 INFO L495 AbstractCegarLoop]: Abstraction has 6442 states and 9319 transitions. [2022-11-22 02:05:13,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 02:05:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 6442 states and 9319 transitions. [2022-11-22 02:05:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-22 02:05:13,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:13,061 INFO L195 NwaCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 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 02:05:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:05:13,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:05:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash 422383152, now seen corresponding path program 1 times [2022-11-22 02:05:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:13,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349311953] [2022-11-22 02:05:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2022-11-22 02:05:14,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349311953] [2022-11-22 02:05:14,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349311953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:14,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:14,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:05:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367721878] [2022-11-22 02:05:14,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:05:14,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:14,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:05:14,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:05:14,376 INFO L87 Difference]: Start difference. First operand 6442 states and 9319 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 02:05:17,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:23,851 WARN L539 Checker$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 02:05:32,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:35,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:37,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:40,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:40,367 INFO L93 Difference]: Finished difference Result 10876 states and 15727 transitions. [2022-11-22 02:05:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:05:40,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 214 [2022-11-22 02:05:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:40,456 INFO L225 Difference]: With dead ends: 10876 [2022-11-22 02:05:40,456 INFO L226 Difference]: Without dead ends: 10859 [2022-11-22 02:05:40,464 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 02:05:40,465 INFO L413 NwaCegarLoop]: 4722 mSDtfsCounter, 3528 mSDsluCounter, 7839 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 12561 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:40,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3528 Valid, 12561 Invalid, 1673 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1671 Invalid, 2 Unknown, 0 Unchecked, 25.5s Time] [2022-11-22 02:05:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2022-11-22 02:05:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 10855. [2022-11-22 02:05:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10855 states, 6310 states have (on average 1.2291600633914421) internal successors, (7756), 6441 states have internal predecessors, (7756), 3971 states have call successors, (3971), 573 states have call predecessors, (3971), 572 states have return successors, (3969), 3922 states have call predecessors, (3969), 3969 states have call successors, (3969) [2022-11-22 02:05:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10855 states to 10855 states and 15696 transitions. [2022-11-22 02:05:41,809 INFO L78 Accepts]: Start accepts. Automaton has 10855 states and 15696 transitions. Word has length 214 [2022-11-22 02:05:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:41,815 INFO L495 AbstractCegarLoop]: Abstraction has 10855 states and 15696 transitions. [2022-11-22 02:05:41,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 02:05:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10855 states and 15696 transitions. [2022-11-22 02:05:41,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-22 02:05:41,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:41,830 INFO L195 NwaCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 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] [2022-11-22 02:05:41,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:05:41,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:05:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash -728710896, now seen corresponding path program 1 times [2022-11-22 02:05:41,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:41,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088992671] [2022-11-22 02:05:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:41,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:05:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2022-11-22 02:05:42,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:05:42,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088992671] [2022-11-22 02:05:42,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088992671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:05:42,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:05:42,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:05:42,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152330520] [2022-11-22 02:05:42,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:05:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:05:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:05:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:05:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:05:42,518 INFO L87 Difference]: Start difference. First operand 10855 states and 15696 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:05:46,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:48,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:52,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:56,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:57,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:05:59,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:00,189 INFO L93 Difference]: Finished difference Result 24487 states and 35192 transitions. [2022-11-22 02:06:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 229 [2022-11-22 02:06:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:00,283 INFO L225 Difference]: With dead ends: 24487 [2022-11-22 02:06:00,283 INFO L226 Difference]: Without dead ends: 13665 [2022-11-22 02:06:00,337 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 02:06:00,338 INFO L413 NwaCegarLoop]: 3874 mSDtfsCounter, 2577 mSDsluCounter, 3093 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 6967 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:00,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 6967 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 989 Invalid, 2 Unknown, 0 Unchecked, 17.1s Time] [2022-11-22 02:06:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13665 states. [2022-11-22 02:06:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13665 to 13652. [2022-11-22 02:06:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13652 states, 7926 states have (on average 1.21814282109513) internal successors, (9655), 8102 states have internal predecessors, (9655), 4927 states have call successors, (4927), 800 states have call predecessors, (4927), 797 states have return successors, (4927), 4856 states have call predecessors, (4927), 4925 states have call successors, (4927) [2022-11-22 02:06:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13652 states to 13652 states and 19509 transitions. [2022-11-22 02:06:01,499 INFO L78 Accepts]: Start accepts. Automaton has 13652 states and 19509 transitions. Word has length 229 [2022-11-22 02:06:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:01,500 INFO L495 AbstractCegarLoop]: Abstraction has 13652 states and 19509 transitions. [2022-11-22 02:06:01,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-22 02:06:01,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13652 states and 19509 transitions. [2022-11-22 02:06:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-22 02:06:01,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:01,508 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] [2022-11-22 02:06:01,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:06:01,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:06:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1759644565, now seen corresponding path program 1 times [2022-11-22 02:06:01,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:01,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587689076] [2022-11-22 02:06:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:02,296 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 02:06:02,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:02,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587689076] [2022-11-22 02:06:02,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587689076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:02,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:02,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:06:02,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071899708] [2022-11-22 02:06:02,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:02,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:06:02,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:02,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:06:02,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:02,298 INFO L87 Difference]: Start difference. First operand 13652 states and 19509 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-22 02:06:09,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:10,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:13,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:18,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:19,745 INFO L93 Difference]: Finished difference Result 31665 states and 45322 transitions. [2022-11-22 02:06:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:19,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 240 [2022-11-22 02:06:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:19,853 INFO L225 Difference]: With dead ends: 31665 [2022-11-22 02:06:19,854 INFO L226 Difference]: Without dead ends: 18394 [2022-11-22 02:06:19,913 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 02:06:19,914 INFO L413 NwaCegarLoop]: 5640 mSDtfsCounter, 2845 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 8759 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:19,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2845 Valid, 8759 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1346 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2022-11-22 02:06:19,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18394 states. [2022-11-22 02:06:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18394 to 18382. [2022-11-22 02:06:21,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18382 states, 10676 states have (on average 1.2160921693518172) internal successors, (12983), 10910 states have internal predecessors, (12983), 6641 states have call successors, (6641), 1066 states have call predecessors, (6641), 1063 states have return successors, (6641), 6546 states have call predecessors, (6641), 6639 states have call successors, (6641) [2022-11-22 02:06:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18382 states to 18382 states and 26265 transitions. [2022-11-22 02:06:21,649 INFO L78 Accepts]: Start accepts. Automaton has 18382 states and 26265 transitions. Word has length 240 [2022-11-22 02:06:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:21,650 INFO L495 AbstractCegarLoop]: Abstraction has 18382 states and 26265 transitions. [2022-11-22 02:06:21,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-22 02:06:21,651 INFO L276 IsEmpty]: Start isEmpty. Operand 18382 states and 26265 transitions. [2022-11-22 02:06:21,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-11-22 02:06:21,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:21,660 INFO L195 NwaCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 9, 9, 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] [2022-11-22 02:06:21,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:06:21,660 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:06:21,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash -796921087, now seen corresponding path program 1 times [2022-11-22 02:06:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:06:21,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282881127] [2022-11-22 02:06:21,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:06:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2022-11-22 02:06:22,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:06:22,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282881127] [2022-11-22 02:06:22,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282881127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:22,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:22,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:06:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233422433] [2022-11-22 02:06:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:22,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:06:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:06:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:06:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:06:22,991 INFO L87 Difference]: Start difference. First operand 18382 states and 26265 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:06:36,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:38,259 WARN L539 Checker$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 02:06:40,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:46,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:49,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:51,316 WARN L539 Checker$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 02:06:56,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:06:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:58,803 INFO L93 Difference]: Finished difference Result 35150 states and 51326 transitions. [2022-11-22 02:06:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:06:58,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 302 [2022-11-22 02:06:58,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:58,995 INFO L225 Difference]: With dead ends: 35150 [2022-11-22 02:06:58,995 INFO L226 Difference]: Without dead ends: 35148 [2022-11-22 02:06:59,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:06:59,026 INFO L413 NwaCegarLoop]: 4918 mSDtfsCounter, 5458 mSDsluCounter, 8505 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 441 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5768 SdHoareTripleChecker+Valid, 13423 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:59,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5768 Valid, 13423 Invalid, 2439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [441 Valid, 1993 Invalid, 5 Unknown, 0 Unchecked, 34.7s Time] [2022-11-22 02:06:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35148 states. [2022-11-22 02:07:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35148 to 27407. [2022-11-22 02:07:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27407 states, 15910 states have (on average 1.216781898177247) internal successors, (19359), 16266 states have internal predecessors, (19359), 9912 states have call successors, (9912), 1587 states have call predecessors, (9912), 1583 states have return successors, (9913), 9764 states have call predecessors, (9913), 9910 states have call successors, (9913) [2022-11-22 02:07:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27407 states to 27407 states and 39184 transitions. [2022-11-22 02:07:02,819 INFO L78 Accepts]: Start accepts. Automaton has 27407 states and 39184 transitions. Word has length 302 [2022-11-22 02:07:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:02,820 INFO L495 AbstractCegarLoop]: Abstraction has 27407 states and 39184 transitions. [2022-11-22 02:07:02,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-22 02:07:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 27407 states and 39184 transitions. [2022-11-22 02:07:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2022-11-22 02:07:02,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:02,866 INFO L195 NwaCegarLoop]: trace histogram [31, 19, 19, 19, 19, 19, 19, 18, 18, 8, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:02,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:07:02,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:07:02,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:02,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1244576830, now seen corresponding path program 1 times [2022-11-22 02:07:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:02,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312945339] [2022-11-22 02:07:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:02,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:05,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2560 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2535 trivial. 0 not checked. [2022-11-22 02:07:05,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:05,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312945339] [2022-11-22 02:07:05,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312945339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:05,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:05,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:07:05,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156963095] [2022-11-22 02:07:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:07:05,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:05,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:07:05,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:07:05,324 INFO L87 Difference]: Start difference. First operand 27407 states and 39184 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-22 02:07:09,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:11,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:13,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:15,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:19,148 WARN L539 Checker$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 02:07:21,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:23,952 WARN L539 Checker$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 02:07:24,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:24,534 INFO L93 Difference]: Finished difference Result 62058 states and 89791 transitions. [2022-11-22 02:07:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:07:24,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 661 [2022-11-22 02:07:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:24,715 INFO L225 Difference]: With dead ends: 62058 [2022-11-22 02:07:24,715 INFO L226 Difference]: Without dead ends: 35032 [2022-11-22 02:07:24,819 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 02:07:24,820 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 661 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 7464 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:24,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 7464 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1038 Invalid, 2 Unknown, 0 Unchecked, 18.0s Time] [2022-11-22 02:07:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35032 states. [2022-11-22 02:07:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35032 to 27413. [2022-11-22 02:07:27,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27413 states, 15916 states have (on average 1.216700175923599) internal successors, (19365), 16272 states have internal predecessors, (19365), 9912 states have call successors, (9912), 1587 states have call predecessors, (9912), 1583 states have return successors, (9913), 9764 states have call predecessors, (9913), 9910 states have call successors, (9913) [2022-11-22 02:07:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27413 states to 27413 states and 39190 transitions. [2022-11-22 02:07:27,556 INFO L78 Accepts]: Start accepts. Automaton has 27413 states and 39190 transitions. Word has length 661 [2022-11-22 02:07:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:27,557 INFO L495 AbstractCegarLoop]: Abstraction has 27413 states and 39190 transitions. [2022-11-22 02:07:27,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 2 states have call successors, (93), 2 states have call predecessors, (93), 1 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-22 02:07:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 27413 states and 39190 transitions. [2022-11-22 02:07:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-11-22 02:07:27,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:27,601 INFO L195 NwaCegarLoop]: trace histogram [31, 19, 19, 19, 19, 19, 19, 18, 18, 8, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:07:27,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:07:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash 257427560, now seen corresponding path program 1 times [2022-11-22 02:07:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537672336] [2022-11-22 02:07:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2560 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2022-11-22 02:07:30,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:30,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537672336] [2022-11-22 02:07:30,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537672336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:30,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:30,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:07:30,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172475172] [2022-11-22 02:07:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:30,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:07:30,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:30,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:07:30,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:07:30,364 INFO L87 Difference]: Start difference. First operand 27413 states and 39190 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-22 02:07:40,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:46,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:48,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:07:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:49,068 INFO L93 Difference]: Finished difference Result 62542 states and 89319 transitions. [2022-11-22 02:07:49,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:07:49,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 663 [2022-11-22 02:07:49,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:49,239 INFO L225 Difference]: With dead ends: 62542 [2022-11-22 02:07:49,239 INFO L226 Difference]: Without dead ends: 35510 [2022-11-22 02:07:49,352 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 02:07:49,353 INFO L413 NwaCegarLoop]: 5404 mSDtfsCounter, 2606 mSDsluCounter, 3111 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2606 SdHoareTripleChecker+Valid, 8515 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:49,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2606 Valid, 8515 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1313 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2022-11-22 02:07:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35510 states. [2022-11-22 02:07:52,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35510 to 35495. [2022-11-22 02:07:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35495 states, 20710 states have (on average 1.221487204249155) internal successors, (25297), 21180 states have internal predecessors, (25297), 12651 states have call successors, (12651), 2139 states have call predecessors, (12651), 2132 states have return successors, (12655), 12449 states have call predecessors, (12655), 12649 states have call successors, (12655) [2022-11-22 02:07:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35495 states to 35495 states and 50603 transitions. [2022-11-22 02:07:52,312 INFO L78 Accepts]: Start accepts. Automaton has 35495 states and 50603 transitions. Word has length 663 [2022-11-22 02:07:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:52,313 INFO L495 AbstractCegarLoop]: Abstraction has 35495 states and 50603 transitions. [2022-11-22 02:07:52,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 3 states have call successors, (94), 2 states have call predecessors, (94), 1 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2022-11-22 02:07:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 35495 states and 50603 transitions. [2022-11-22 02:07:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2022-11-22 02:07:52,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:52,356 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:52,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:07:52,356 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:07:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1873114462, now seen corresponding path program 1 times [2022-11-22 02:07:52,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:07:52,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803680204] [2022-11-22 02:07:52,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:07:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:07:55,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:07:55,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803680204] [2022-11-22 02:07:55,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803680204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:55,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:55,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:07:55,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685177231] [2022-11-22 02:07:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:55,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:07:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:07:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:07:55,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:07:55,606 INFO L87 Difference]: Start difference. First operand 35495 states and 50603 transitions. Second operand has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:08:01,241 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 02:08:09,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:11,056 WARN L539 Checker$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 02:08:15,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:23,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:25,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:28,201 WARN L539 Checker$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 02:08:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:08:28,850 INFO L93 Difference]: Finished difference Result 78109 states and 111092 transitions. [2022-11-22 02:08:28,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:08:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 685 [2022-11-22 02:08:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:08:29,056 INFO L225 Difference]: With dead ends: 78109 [2022-11-22 02:08:29,056 INFO L226 Difference]: Without dead ends: 42995 [2022-11-22 02:08:29,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:08:29,192 INFO L413 NwaCegarLoop]: 5280 mSDtfsCounter, 2409 mSDsluCounter, 13671 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 18951 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:08:29,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 18951 Invalid, 2822 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2818 Invalid, 3 Unknown, 0 Unchecked, 31.7s Time] [2022-11-22 02:08:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42995 states. [2022-11-22 02:08:32,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42995 to 42962. [2022-11-22 02:08:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42962 states, 24985 states have (on average 1.2149689813888334) internal successors, (30356), 25566 states have internal predecessors, (30356), 15300 states have call successors, (15300), 2676 states have call predecessors, (15300), 2675 states have return successors, (15316), 15056 states have call predecessors, (15316), 15298 states have call successors, (15316) [2022-11-22 02:08:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42962 states to 42962 states and 60972 transitions. [2022-11-22 02:08:32,991 INFO L78 Accepts]: Start accepts. Automaton has 42962 states and 60972 transitions. Word has length 685 [2022-11-22 02:08:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:08:32,992 INFO L495 AbstractCegarLoop]: Abstraction has 42962 states and 60972 transitions. [2022-11-22 02:08:32,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.2) internal successors, (261), 4 states have internal predecessors, (261), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:08:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 42962 states and 60972 transitions. [2022-11-22 02:08:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-11-22 02:08:33,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:33,040 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:33,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:08:33,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:08:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2050842161, now seen corresponding path program 1 times [2022-11-22 02:08:33,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:08:33,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005804587] [2022-11-22 02:08:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:08:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:08:36,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:08:36,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005804587] [2022-11-22 02:08:36,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005804587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:08:36,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:08:36,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:08:36,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704599595] [2022-11-22 02:08:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:08:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:08:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:08:36,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:08:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:08:36,108 INFO L87 Difference]: Start difference. First operand 42962 states and 60972 transitions. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:08:41,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:08:54,613 WARN L539 Checker$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 02:09:02,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:03,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:06,690 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 02:09:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:07,388 INFO L93 Difference]: Finished difference Result 93085 states and 131878 transitions. [2022-11-22 02:09:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:09:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 686 [2022-11-22 02:09:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:07,678 INFO L225 Difference]: With dead ends: 93085 [2022-11-22 02:09:07,678 INFO L226 Difference]: Without dead ends: 50504 [2022-11-22 02:09:08,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:09:08,064 INFO L413 NwaCegarLoop]: 5285 mSDtfsCounter, 2430 mSDsluCounter, 13661 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2430 SdHoareTripleChecker+Valid, 18946 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:08,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2430 Valid, 18946 Invalid, 2827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2821 Invalid, 3 Unknown, 0 Unchecked, 29.5s Time] [2022-11-22 02:09:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50504 states. [2022-11-22 02:09:11,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50504 to 50444. [2022-11-22 02:09:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50444 states, 29269 states have (on average 1.2099832587379138) internal successors, (35415), 29958 states have internal predecessors, (35415), 17946 states have call successors, (17946), 3222 states have call predecessors, (17946), 3227 states have return successors, (17974), 17663 states have call predecessors, (17974), 17944 states have call successors, (17974) [2022-11-22 02:09:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50444 states to 50444 states and 71335 transitions. [2022-11-22 02:09:11,635 INFO L78 Accepts]: Start accepts. Automaton has 50444 states and 71335 transitions. Word has length 686 [2022-11-22 02:09:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:11,636 INFO L495 AbstractCegarLoop]: Abstraction has 50444 states and 71335 transitions. [2022-11-22 02:09:11,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 4 states have internal predecessors, (262), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:09:11,636 INFO L276 IsEmpty]: Start isEmpty. Operand 50444 states and 71335 transitions. [2022-11-22 02:09:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-11-22 02:09:11,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:09:11,678 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:11,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:09:11,678 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:09:11,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:09:11,679 INFO L85 PathProgramCache]: Analyzing trace with hash -120341832, now seen corresponding path program 1 times [2022-11-22 02:09:11,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:09:11,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501429077] [2022-11-22 02:09:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:09:11,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:09:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:09:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:09:14,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:09:14,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501429077] [2022-11-22 02:09:14,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501429077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:09:14,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:09:14,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:09:14,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100661144] [2022-11-22 02:09:14,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:09:14,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:09:14,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:09:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:09:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:09:14,671 INFO L87 Difference]: Start difference. First operand 50444 states and 71335 transitions. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:09:19,135 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 02:09:29,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:34,755 WARN L539 Checker$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 02:09:42,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:44,495 WARN L539 Checker$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 02:09:51,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:54,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:09:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:09:55,343 INFO L93 Difference]: Finished difference Result 109162 states and 154167 transitions. [2022-11-22 02:09:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:09:55,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 687 [2022-11-22 02:09:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:09:55,579 INFO L225 Difference]: With dead ends: 109162 [2022-11-22 02:09:55,580 INFO L226 Difference]: Without dead ends: 59099 [2022-11-22 02:09:55,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:09:55,856 INFO L413 NwaCegarLoop]: 5406 mSDtfsCounter, 2594 mSDsluCounter, 13888 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 19294 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:09:55,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2594 Valid, 19294 Invalid, 2919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 2910 Invalid, 3 Unknown, 0 Unchecked, 38.5s Time] [2022-11-22 02:09:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59099 states. [2022-11-22 02:09:59,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59099 to 59066. [2022-11-22 02:09:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59066 states, 34225 states have (on average 1.2062527392257123) internal successors, (41284), 35028 states have internal predecessors, (41284), 20973 states have call successors, (20973), 3855 states have call predecessors, (20973), 3866 states have return successors, (21013), 20645 states have call predecessors, (21013), 20971 states have call successors, (21013) [2022-11-22 02:09:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59066 states to 59066 states and 83270 transitions. [2022-11-22 02:09:59,990 INFO L78 Accepts]: Start accepts. Automaton has 59066 states and 83270 transitions. Word has length 687 [2022-11-22 02:09:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:09:59,991 INFO L495 AbstractCegarLoop]: Abstraction has 59066 states and 83270 transitions. [2022-11-22 02:09:59,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 4 states have internal predecessors, (263), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:09:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 59066 states and 83270 transitions. [2022-11-22 02:10:00,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-11-22 02:10:00,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:00,030 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:00,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:10:00,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:10:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash 830619426, now seen corresponding path program 1 times [2022-11-22 02:10:00,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:00,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198225151] [2022-11-22 02:10:00,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:00,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:10:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:10:02,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:02,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198225151] [2022-11-22 02:10:02,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198225151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:10:02,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:10:02,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:10:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635506665] [2022-11-22 02:10:02,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:10:02,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:10:02,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:10:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:10:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:10:02,881 INFO L87 Difference]: Start difference. First operand 59066 states and 83270 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:10:11,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:16,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:18,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:23,315 WARN L539 Checker$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 02:10:32,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:40,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:10:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:10:42,030 INFO L93 Difference]: Finished difference Result 125608 states and 176981 transitions. [2022-11-22 02:10:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:10:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 688 [2022-11-22 02:10:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:10:42,343 INFO L225 Difference]: With dead ends: 125608 [2022-11-22 02:10:42,343 INFO L226 Difference]: Without dead ends: 66923 [2022-11-22 02:10:42,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:10:42,529 INFO L413 NwaCegarLoop]: 5407 mSDtfsCounter, 2558 mSDsluCounter, 13923 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 19330 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:10:42,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 19330 Invalid, 2923 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 2914 Invalid, 2 Unknown, 0 Unchecked, 36.7s Time] [2022-11-22 02:10:42,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66923 states. [2022-11-22 02:10:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66923 to 66890. [2022-11-22 02:10:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66890 states, 38764 states have (on average 1.2042616861005055) internal successors, (46682), 39681 states have internal predecessors, (46682), 23703 states have call successors, (23703), 4404 states have call predecessors, (23703), 4421 states have return successors, (23755), 23330 states have call predecessors, (23755), 23701 states have call successors, (23755) [2022-11-22 02:10:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66890 states to 66890 states and 94140 transitions. [2022-11-22 02:10:47,160 INFO L78 Accepts]: Start accepts. Automaton has 66890 states and 94140 transitions. Word has length 688 [2022-11-22 02:10:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:10:47,161 INFO L495 AbstractCegarLoop]: Abstraction has 66890 states and 94140 transitions. [2022-11-22 02:10:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:10:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 66890 states and 94140 transitions. [2022-11-22 02:10:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2022-11-22 02:10:47,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:10:47,203 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:47,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:10:47,203 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:10:47,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:10:47,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1963357040, now seen corresponding path program 1 times [2022-11-22 02:10:47,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:10:47,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424962] [2022-11-22 02:10:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:10:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:10:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:10:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:10:50,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:50,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424962] [2022-11-22 02:10:50,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:10:50,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:10:50,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:10:50,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124895298] [2022-11-22 02:10:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:10:50,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:10:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:10:50,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:10:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:10:50,113 INFO L87 Difference]: Start difference. First operand 66890 states and 94140 transitions. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:10:56,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:03,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:04,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:10,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:12,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:14,603 WARN L539 Checker$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 02:11:16,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:23,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:32,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:11:35,751 WARN L539 Checker$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 02:11:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:11:36,912 INFO L93 Difference]: Finished difference Result 141292 states and 198769 transitions. [2022-11-22 02:11:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:11:36,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 689 [2022-11-22 02:11:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:11:37,212 INFO L225 Difference]: With dead ends: 141292 [2022-11-22 02:11:37,212 INFO L226 Difference]: Without dead ends: 74783 [2022-11-22 02:11:37,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:11:37,555 INFO L413 NwaCegarLoop]: 5406 mSDtfsCounter, 2569 mSDsluCounter, 13912 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 19318 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:11:37,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 19318 Invalid, 2931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2919 Invalid, 4 Unknown, 0 Unchecked, 43.7s Time] [2022-11-22 02:11:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74783 states. [2022-11-22 02:11:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74783 to 74750. [2022-11-22 02:11:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74750 states, 43324 states have (on average 1.2025897885698458) internal successors, (52101), 44355 states have internal predecessors, (52101), 26442 states have call successors, (26442), 4959 states have call predecessors, (26442), 4982 states have return successors, (26506), 26024 states have call predecessors, (26506), 26440 states have call successors, (26506) [2022-11-22 02:11:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74750 states to 74750 states and 105049 transitions. [2022-11-22 02:11:43,307 INFO L78 Accepts]: Start accepts. Automaton has 74750 states and 105049 transitions. Word has length 689 [2022-11-22 02:11:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:11:43,308 INFO L495 AbstractCegarLoop]: Abstraction has 74750 states and 105049 transitions. [2022-11-22 02:11:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 4 states have internal predecessors, (265), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:11:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 74750 states and 105049 transitions. [2022-11-22 02:11:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2022-11-22 02:11:43,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:11:43,720 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:43,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:11:43,720 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:11:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:11:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -30529385, now seen corresponding path program 1 times [2022-11-22 02:11:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:11:43,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788268070] [2022-11-22 02:11:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:11:43,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:11:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:11:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:11:46,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:11:46,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788268070] [2022-11-22 02:11:46,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788268070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:11:46,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:11:46,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:11:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908296108] [2022-11-22 02:11:46,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:11:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:11:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:11:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:11:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:11:46,141 INFO L87 Difference]: Start difference. First operand 74750 states and 105049 transitions. Second operand has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:11:55,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:00,552 WARN L539 Checker$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 02:12:02,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:07,855 WARN L539 Checker$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 02:12:14,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:19,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:23,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:25,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:27,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:28,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:31,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:32,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:12:32,661 INFO L93 Difference]: Finished difference Result 156982 states and 220569 transitions. [2022-11-22 02:12:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:12:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 690 [2022-11-22 02:12:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:12:33,193 INFO L225 Difference]: With dead ends: 156982 [2022-11-22 02:12:33,193 INFO L226 Difference]: Without dead ends: 82613 [2022-11-22 02:12:33,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:12:33,394 INFO L413 NwaCegarLoop]: 5407 mSDtfsCounter, 2555 mSDsluCounter, 13925 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 19332 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:12:33,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2555 Valid, 19332 Invalid, 2931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 2919 Invalid, 4 Unknown, 0 Unchecked, 43.0s Time] [2022-11-22 02:12:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82613 states. [2022-11-22 02:12:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82613 to 82580. [2022-11-22 02:12:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82580 states, 47875 states have (on average 1.2012741514360312) internal successors, (57511), 49020 states have internal predecessors, (57511), 29172 states have call successors, (29172), 5502 states have call predecessors, (29172), 5531 states have return successors, (29248), 28709 states have call predecessors, (29248), 29170 states have call successors, (29248) [2022-11-22 02:12:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82580 states to 82580 states and 115931 transitions. [2022-11-22 02:12:39,755 INFO L78 Accepts]: Start accepts. Automaton has 82580 states and 115931 transitions. Word has length 690 [2022-11-22 02:12:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:12:39,756 INFO L495 AbstractCegarLoop]: Abstraction has 82580 states and 115931 transitions. [2022-11-22 02:12:39,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.2) internal successors, (266), 4 states have internal predecessors, (266), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:12:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 82580 states and 115931 transitions. [2022-11-22 02:12:39,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2022-11-22 02:12:39,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:12:39,790 INFO L195 NwaCegarLoop]: trace histogram [33, 19, 19, 19, 19, 19, 19, 18, 18, 8, 6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:39,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:12:39,790 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:12:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:12:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1989902465, now seen corresponding path program 1 times [2022-11-22 02:12:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:12:39,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645408369] [2022-11-22 02:12:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:12:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:12:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:12:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2712 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 2672 trivial. 0 not checked. [2022-11-22 02:12:42,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:12:42,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645408369] [2022-11-22 02:12:42,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645408369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:12:42,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:12:42,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:12:42,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593116548] [2022-11-22 02:12:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:12:42,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:12:42,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:12:42,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:12:42,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:12:42,509 INFO L87 Difference]: Start difference. First operand 82580 states and 115931 transitions. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 4 states have internal predecessors, (267), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) [2022-11-22 02:12:56,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:12:58,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:02,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:04,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:12,555 WARN L539 Checker$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 02:13:14,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:17,090 WARN L539 Checker$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 02:13:20,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:24,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:26,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:13:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:13:28,479 INFO L93 Difference]: Finished difference Result 172651 states and 242351 transitions. [2022-11-22 02:13:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:13:28,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 4 states have internal predecessors, (267), 3 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (95), 4 states have call predecessors, (95), 3 states have call successors, (95) Word has length 691 [2022-11-22 02:13:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:13:28,879 INFO L225 Difference]: With dead ends: 172651 [2022-11-22 02:13:28,880 INFO L226 Difference]: Without dead ends: 90452 [2022-11-22 02:13:29,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:13:29,347 INFO L413 NwaCegarLoop]: 5407 mSDtfsCounter, 2558 mSDsluCounter, 13923 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 10 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 19330 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:13:29,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 19330 Invalid, 2935 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2921 Invalid, 4 Unknown, 0 Unchecked, 42.6s Time] [2022-11-22 02:13:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90452 states.