./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7 --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 3b1986f893b92b583df635a6037935ebceab765520aec8f1f2d3a2b6ea37b26f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:00:06,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:00:06,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:00:07,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:00:07,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:00:07,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:00:07,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:00:07,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:00:07,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:00:07,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:00:07,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:00:07,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:00:07,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:00:07,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:00:07,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:00:07,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:00:07,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:00:07,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:00:07,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:00:07,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:00:07,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:00:07,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:00:07,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:00:07,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:00:07,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:00:07,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:00:07,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:00:07,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:00:07,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:00:07,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:00:07,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:00:07,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:00:07,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:00:07,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:00:07,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:00:07,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:00:07,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:00:07,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:00:07,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:00:07,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:00:07,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:00:07,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:00:07,125 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:00:07,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:00:07,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:00:07,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:00:07,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:00:07,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:00:07,135 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:00:07,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:00:07,135 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:00:07,135 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:00:07,136 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:00:07,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:00:07,137 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:00:07,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:00:07,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:00:07,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:00:07,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:00:07,138 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:00:07,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:00:07,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:00:07,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:00:07,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:00:07,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:00:07,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:00:07,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:00:07,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:00:07,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:00:07,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:00:07,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:00:07,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:07,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:00:07,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:00:07,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:00:07,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:00:07,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:00:07,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:00:07,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:00:07,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:00:07,143 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b1986f893b92b583df635a6037935ebceab765520aec8f1f2d3a2b6ea37b26f [2021-11-25 19:00:07,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:00:07,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:00:07,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:00:07,429 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:00:07,429 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:00:07,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 19:00:07,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/data/75ee95217/def722fd1c254c93b91c667f557e3f39/FLAGc27e84beb [2021-11-25 19:00:08,696 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:00:08,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 19:00:08,780 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/data/75ee95217/def722fd1c254c93b91c667f557e3f39/FLAGc27e84beb [2021-11-25 19:00:08,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/data/75ee95217/def722fd1c254c93b91c667f557e3f39 [2021-11-25 19:00:08,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:00:08,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:00:08,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:08,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:00:08,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:00:08,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:08" (1/1) ... [2021-11-25 19:00:08,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617bbce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:08, skipping insertion in model container [2021-11-25 19:00:08,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:00:08" (1/1) ... [2021-11-25 19:00:08,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:00:09,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:00:15,773 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749649,749662] [2021-11-25 19:00:15,775 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749796,749809] [2021-11-25 19:00:15,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749935,749948] [2021-11-25 19:00:15,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[750093,750106] [2021-11-25 19:00:15,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:15,924 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:00:16,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749649,749662] [2021-11-25 19:00:16,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749796,749809] [2021-11-25 19:00:16,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[749935,749948] [2021-11-25 19:00:16,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i[750093,750106] [2021-11-25 19:00:16,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:00:17,081 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:00:17,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17 WrapperNode [2021-11-25 19:00:17,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:00:17,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:17,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:00:17,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:00:17,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:17,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:17,803 INFO L137 Inliner]: procedures = 617, calls = 11504, calls flagged for inlining = 310, calls inlined = 246, statements flattened = 12799 [2021-11-25 19:00:17,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:00:17,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:00:17,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:00:17,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:00:17,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:17,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:17,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:17,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:18,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:18,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:18,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:18,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:00:18,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:00:18,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:00:18,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:00:18,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (1/1) ... [2021-11-25 19:00:18,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:00:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:18,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:00:18,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:00:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 19:00:18,731 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 19:00:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 19:00:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 19:00:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-25 19:00:18,732 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-25 19:00:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-25 19:00:18,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-25 19:00:18,734 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-25 19:00:18,734 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-25 19:00:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 19:00:18,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 19:00:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 19:00:18,735 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 19:00:18,735 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-25 19:00:18,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-25 19:00:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-25 19:00:18,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-25 19:00:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-25 19:00:18,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-25 19:00:18,736 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 19:00:18,737 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 19:00:18,737 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 19:00:18,737 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 19:00:18,737 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-25 19:00:18,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-25 19:00:18,738 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-25 19:00:18,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-25 19:00:18,738 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 19:00:18,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 19:00:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 19:00:18,739 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 19:00:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 19:00:18,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 19:00:18,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 19:00:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 19:00:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 19:00:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 19:00:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 19:00:18,740 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 19:00:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-25 19:00:18,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-25 19:00:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 19:00:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 19:00:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 19:00:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 19:00:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-25 19:00:18,743 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-25 19:00:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-25 19:00:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-25 19:00:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-25 19:00:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-25 19:00:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 19:00:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 19:00:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:00:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-25 19:00:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-25 19:00:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 19:00:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 19:00:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-25 19:00:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-25 19:00:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 19:00:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 19:00:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-25 19:00:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-25 19:00:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-25 19:00:18,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-25 19:00:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 19:00:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 19:00:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-25 19:00:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-25 19:00:18,748 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 19:00:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 19:00:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 19:00:18,749 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 19:00:18,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 19:00:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 19:00:18,750 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 19:00:18,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 19:00:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 19:00:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 19:00:18,751 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-25 19:00:18,751 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-25 19:00:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 19:00:18,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 19:00:18,752 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-25 19:00:18,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-25 19:00:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:00:18,753 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 19:00:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 19:00:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-25 19:00:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-25 19:00:18,754 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-25 19:00:18,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-25 19:00:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 19:00:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 19:00:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 19:00:18,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 19:00:18,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 19:00:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 19:00:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 19:00:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 19:00:18,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-25 19:00:18,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-25 19:00:18,757 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 19:00:18,758 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 19:00:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 19:00:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 19:00:18,760 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-25 19:00:18,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-25 19:00:18,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 19:00:18,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 19:00:18,762 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-25 19:00:18,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-25 19:00:18,762 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-25 19:00:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-25 19:00:18,769 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-25 19:00:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-25 19:00:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:00:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 19:00:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 19:00:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 19:00:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 19:00:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:00:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-25 19:00:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-25 19:00:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 19:00:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 19:00:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-25 19:00:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-25 19:00:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 19:00:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 19:00:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:00:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 19:00:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 19:00:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 19:00:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-25 19:00:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-25 19:00:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:00:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 19:00:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-25 19:00:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-25 19:00:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:00:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 19:00:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-25 19:00:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-25 19:00:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 19:00:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 19:00:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 19:00:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 19:00:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-25 19:00:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-25 19:00:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-25 19:00:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-25 19:00:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 19:00:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 19:00:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-25 19:00:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-25 19:00:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-25 19:00:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-25 19:00:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:00:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:00:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-25 19:00:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-25 19:00:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-25 19:00:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-25 19:00:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-25 19:00:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-25 19:00:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 19:00:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 19:00:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 19:00:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 19:00:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 19:00:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 19:00:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-25 19:00:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-25 19:00:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 19:00:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 19:00:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-25 19:00:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-25 19:00:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-25 19:00:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-25 19:00:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-25 19:00:18,780 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-25 19:00:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-25 19:00:18,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-25 19:00:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 19:00:18,780 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 19:00:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-25 19:00:18,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-25 19:00:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-25 19:00:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-25 19:00:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-25 19:00:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-25 19:00:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-25 19:00:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-25 19:00:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 19:00:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 19:00:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 19:00:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 19:00:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-25 19:00:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-25 19:00:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-25 19:00:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-25 19:00:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 19:00:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 19:00:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:00:18,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:00:18,783 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 19:00:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 19:00:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-25 19:00:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-25 19:00:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 19:00:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 19:00:18,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 19:00:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 19:00:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 19:00:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 19:00:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 19:00:18,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 19:00:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:00:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-25 19:00:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-25 19:00:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 19:00:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 19:00:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-25 19:00:18,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-25 19:00:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:00:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-25 19:00:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-25 19:00:18,787 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-25 19:00:18,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-25 19:00:18,788 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-25 19:00:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-25 19:00:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-25 19:00:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-25 19:00:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-25 19:00:18,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-25 19:00:18,792 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 19:00:18,793 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 19:00:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:00:18,793 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-25 19:00:18,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-25 19:00:18,794 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 19:00:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 19:00:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 19:00:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 19:00:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-25 19:00:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-25 19:00:18,795 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-25 19:00:18,795 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-25 19:00:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 19:00:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 19:00:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 19:00:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 19:00:18,796 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-25 19:00:18,796 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-25 19:00:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 19:00:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 19:00:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 19:00:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 19:00:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 19:00:18,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 19:00:18,797 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-25 19:00:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-25 19:00:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-25 19:00:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-25 19:00:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-25 19:00:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-25 19:00:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 19:00:18,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 19:00:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-25 19:00:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-25 19:00:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 19:00:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 19:00:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 19:00:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 19:00:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 19:00:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 19:00:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 19:00:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 19:00:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-25 19:00:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-25 19:00:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-25 19:00:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-25 19:00:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 19:00:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 19:00:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 19:00:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 19:00:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:00:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-25 19:00:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-25 19:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 19:00:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 19:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-25 19:00:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-25 19:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-25 19:00:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-25 19:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 19:00:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 19:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-25 19:00:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-25 19:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 19:00:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 19:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-25 19:00:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-25 19:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 19:00:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 19:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 19:00:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 19:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-25 19:00:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-25 19:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 19:00:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 19:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 19:00:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 19:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 19:00:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 19:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 19:00:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 19:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 19:00:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 19:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-25 19:00:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-25 19:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 19:00:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 19:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-25 19:00:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-25 19:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 19:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-25 19:00:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-25 19:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-25 19:00:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-25 19:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-25 19:00:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-25 19:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-25 19:00:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-25 19:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 19:00:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 19:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 19:00:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 19:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-25 19:00:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-25 19:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-25 19:00:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-25 19:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-25 19:00:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-25 19:00:20,174 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:00:20,183 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:00:34,894 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 19:02:58,254 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 19:02:58,373 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:03:03,232 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:03:03,232 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 19:03:03,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:03:03 BoogieIcfgContainer [2021-11-25 19:03:03,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:03:03,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:03:03,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:03:03,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:03:03,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:00:08" (1/3) ... [2021-11-25 19:03:03,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4219ea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:03:03, skipping insertion in model container [2021-11-25 19:03:03,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:00:17" (2/3) ... [2021-11-25 19:03:03,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4219ea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:03:03, skipping insertion in model container [2021-11-25 19:03:03,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:03:03" (3/3) ... [2021-11-25 19:03:03,249 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 19:03:03,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:03:03,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 19:03:03,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:03:03,339 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:03:03,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 19:03:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 2804 states, 1764 states have (on average 1.3395691609977325) internal successors, (2363), 1780 states have internal predecessors, (2363), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) [2021-11-25 19:03:03,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-25 19:03:03,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:03,456 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:03,458 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:03:03,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:03,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1023817224, now seen corresponding path program 1 times [2021-11-25 19:03:03,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:03,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838613387] [2021-11-25 19:03:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:03,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-25 19:03:04,974 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:04,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838613387] [2021-11-25 19:03:04,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838613387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:04,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:04,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:04,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113600019] [2021-11-25 19:03:04,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:04,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:04,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:05,030 INFO L87 Difference]: Start difference. First operand has 2804 states, 1764 states have (on average 1.3395691609977325) internal successors, (2363), 1780 states have internal predecessors, (2363), 874 states have call successors, (874), 165 states have call predecessors, (874), 164 states have return successors, (868), 866 states have call predecessors, (868), 868 states have call successors, (868) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:03:10,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:13,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:17,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:23,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:27,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:29,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:32,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:34,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:36,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:39,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:03:39,584 INFO L93 Difference]: Finished difference Result 7899 states and 11569 transitions. [2021-11-25 19:03:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:03:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 184 [2021-11-25 19:03:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:03:39,667 INFO L225 Difference]: With dead ends: 7899 [2021-11-25 19:03:39,667 INFO L226 Difference]: Without dead ends: 5118 [2021-11-25 19:03:39,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:39,702 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 3398 mSDsluCounter, 4026 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 14 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 7849 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:03:39,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3401 Valid, 7849 Invalid, 1055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 1031 Invalid, 10 Unknown, 0 Unchecked, 34.1s Time] [2021-11-25 19:03:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2021-11-25 19:03:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5115. [2021-11-25 19:03:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 3219 states have (on average 1.3317800559179869) internal successors, (4287), 3251 states have internal predecessors, (4287), 1583 states have call successors, (1583), 312 states have call predecessors, (1583), 311 states have return successors, (1583), 1575 states have call predecessors, (1583), 1580 states have call successors, (1583) [2021-11-25 19:03:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7453 transitions. [2021-11-25 19:03:40,243 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7453 transitions. Word has length 184 [2021-11-25 19:03:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:03:40,247 INFO L470 AbstractCegarLoop]: Abstraction has 5115 states and 7453 transitions. [2021-11-25 19:03:40,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 19:03:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7453 transitions. [2021-11-25 19:03:40,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-25 19:03:40,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:03:40,261 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:03:40,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:03:40,262 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:03:40,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:03:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1220244726, now seen corresponding path program 1 times [2021-11-25 19:03:40,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:03:40,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614774600] [2021-11-25 19:03:40,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:03:40,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:03:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:03:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-25 19:03:41,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:03:41,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614774600] [2021-11-25 19:03:41,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614774600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:03:41,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:03:41,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:03:41,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637125198] [2021-11-25 19:03:41,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:03:41,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:03:41,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:03:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:03:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:03:41,131 INFO L87 Difference]: Start difference. First operand 5115 states and 7453 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 19:03:45,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:47,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:52,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:03:54,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:57,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:03:59,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:03,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:06,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:09,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:11,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:14,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:16,425 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:18,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:04:19,196 INFO L93 Difference]: Finished difference Result 13412 states and 19536 transitions. [2021-11-25 19:04:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:04:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 198 [2021-11-25 19:04:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:04:19,288 INFO L225 Difference]: With dead ends: 13412 [2021-11-25 19:04:19,289 INFO L226 Difference]: Without dead ends: 8330 [2021-11-25 19:04:19,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:04:19,326 INFO L933 BasicCegarLoop]: 4178 mSDtfsCounter, 2349 mSDsluCounter, 4017 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 17 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 7715 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:04:19,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 7715 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1059 Invalid, 11 Unknown, 0 Unchecked, 37.7s Time] [2021-11-25 19:04:19,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8330 states. [2021-11-25 19:04:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8330 to 8323. [2021-11-25 19:04:19,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 5300 states have (on average 1.3343396226415094) internal successors, (7072), 5342 states have internal predecessors, (7072), 2511 states have call successors, (2511), 512 states have call predecessors, (2511), 510 states have return successors, (2513), 2498 states have call predecessors, (2513), 2508 states have call successors, (2513) [2021-11-25 19:04:19,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 12096 transitions. [2021-11-25 19:04:19,992 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 12096 transitions. Word has length 198 [2021-11-25 19:04:19,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:04:19,993 INFO L470 AbstractCegarLoop]: Abstraction has 8323 states and 12096 transitions. [2021-11-25 19:04:19,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 19:04:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 12096 transitions. [2021-11-25 19:04:20,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 19:04:20,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:04:20,004 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:04:20,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:04:20,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:04:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:04:20,008 INFO L85 PathProgramCache]: Analyzing trace with hash -268431891, now seen corresponding path program 1 times [2021-11-25 19:04:20,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:04:20,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028076810] [2021-11-25 19:04:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:04:20,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:04:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:04:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1135 trivial. 0 not checked. [2021-11-25 19:04:20,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:04:20,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028076810] [2021-11-25 19:04:20,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028076810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:04:20,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:04:20,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:04:20,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317766624] [2021-11-25 19:04:20,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:04:20,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:04:20,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:04:20,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:04:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:04:20,899 INFO L87 Difference]: Start difference. First operand 8323 states and 12096 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:04:24,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:27,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:31,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:33,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:34,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:36,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:04:39,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:42,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:44,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:48,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:52,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:54,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:57,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:04:59,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:02,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:04,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:04,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:04,806 INFO L93 Difference]: Finished difference Result 13918 states and 20204 transitions. [2021-11-25 19:05:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:05:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 232 [2021-11-25 19:05:04,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:04,931 INFO L225 Difference]: With dead ends: 13918 [2021-11-25 19:05:04,931 INFO L226 Difference]: Without dead ends: 13895 [2021-11-25 19:05:04,944 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:05:04,945 INFO L933 BasicCegarLoop]: 4314 mSDtfsCounter, 3433 mSDsluCounter, 8829 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 12151 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:04,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3436 Valid, 12151 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1497 Invalid, 10 Unknown, 0 Unchecked, 43.5s Time] [2021-11-25 19:05:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13895 states. [2021-11-25 19:05:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13895 to 13892. [2021-11-25 19:05:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13892 states, 8865 states have (on average 1.334010152284264) internal successors, (11826), 8929 states have internal predecessors, (11826), 4165 states have call successors, (4165), 862 states have call predecessors, (4165), 860 states have return successors, (4172), 4148 states have call predecessors, (4172), 4162 states have call successors, (4172) [2021-11-25 19:05:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13892 states to 13892 states and 20163 transitions. [2021-11-25 19:05:05,871 INFO L78 Accepts]: Start accepts. Automaton has 13892 states and 20163 transitions. Word has length 232 [2021-11-25 19:05:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:05,873 INFO L470 AbstractCegarLoop]: Abstraction has 13892 states and 20163 transitions. [2021-11-25 19:05:05,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-25 19:05:05,873 INFO L276 IsEmpty]: Start isEmpty. Operand 13892 states and 20163 transitions. [2021-11-25 19:05:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-25 19:05:05,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:05,890 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:05,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:05:05,890 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash 813568829, now seen corresponding path program 1 times [2021-11-25 19:05:05,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362641827] [2021-11-25 19:05:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:05,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1053 trivial. 0 not checked. [2021-11-25 19:05:06,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:06,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362641827] [2021-11-25 19:05:06,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362641827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:06,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:06,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:06,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895761103] [2021-11-25 19:05:06,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:06,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:06,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:06,626 INFO L87 Difference]: Start difference. First operand 13892 states and 20163 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 19:05:14,119 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:15,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:05:18,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:20,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:23,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:26,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:29,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:32,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:34,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:36,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:39,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:41,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:05:42,201 INFO L93 Difference]: Finished difference Result 31750 states and 46064 transitions. [2021-11-25 19:05:42,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:05:42,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 247 [2021-11-25 19:05:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:05:42,297 INFO L225 Difference]: With dead ends: 31750 [2021-11-25 19:05:42,298 INFO L226 Difference]: Without dead ends: 17891 [2021-11-25 19:05:42,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:42,364 INFO L933 BasicCegarLoop]: 4327 mSDtfsCounter, 3394 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 5 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 7894 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:05:42,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3397 Valid, 7894 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1005 Invalid, 10 Unknown, 0 Unchecked, 35.0s Time] [2021-11-25 19:05:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17891 states. [2021-11-25 19:05:43,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17891 to 17873. [2021-11-25 19:05:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17873 states, 11366 states have (on average 1.3323068801689248) internal successors, (15143), 11464 states have internal predecessors, (15143), 5380 states have call successors, (5380), 1128 states have call predecessors, (5380), 1125 states have return successors, (5391), 5343 states have call predecessors, (5391), 5377 states have call successors, (5391) [2021-11-25 19:05:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17873 states to 17873 states and 25914 transitions. [2021-11-25 19:05:43,471 INFO L78 Accepts]: Start accepts. Automaton has 17873 states and 25914 transitions. Word has length 247 [2021-11-25 19:05:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:05:43,471 INFO L470 AbstractCegarLoop]: Abstraction has 17873 states and 25914 transitions. [2021-11-25 19:05:43,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 19:05:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 17873 states and 25914 transitions. [2021-11-25 19:05:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-25 19:05:43,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:05:43,486 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:05:43,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:05:43,487 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:05:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:05:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash -876851377, now seen corresponding path program 1 times [2021-11-25 19:05:43,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:05:43,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251287816] [2021-11-25 19:05:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:05:43,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:05:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:05:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2021-11-25 19:05:44,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:05:44,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251287816] [2021-11-25 19:05:44,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251287816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:05:44,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:05:44,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:05:44,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910652215] [2021-11-25 19:05:44,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:05:44,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:05:44,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:05:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:05:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:05:44,166 INFO L87 Difference]: Start difference. First operand 17873 states and 25914 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 19:05:50,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:05:52,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:54,931 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:57,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:05:59,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:06:01,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:03,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:06,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:08,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:12,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:15,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:18,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:20,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:22,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:25,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:27,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:28,422 INFO L93 Difference]: Finished difference Result 40422 states and 58690 transitions. [2021-11-25 19:06:28,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 251 [2021-11-25 19:06:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:28,545 INFO L225 Difference]: With dead ends: 40422 [2021-11-25 19:06:28,545 INFO L226 Difference]: Without dead ends: 24134 [2021-11-25 19:06:28,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:28,594 INFO L933 BasicCegarLoop]: 5495 mSDtfsCounter, 2273 mSDsluCounter, 4015 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 15 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 9030 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:28,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 9030 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1329 Invalid, 14 Unknown, 0 Unchecked, 43.6s Time] [2021-11-25 19:06:28,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24134 states. [2021-11-25 19:06:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24134 to 24107. [2021-11-25 19:06:29,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24107 states, 15398 states have (on average 1.335173399142746) internal successors, (20559), 15530 states have internal predecessors, (20559), 7198 states have call successors, (7198), 1514 states have call predecessors, (7198), 1509 states have return successors, (7217), 7137 states have call predecessors, (7217), 7195 states have call successors, (7217) [2021-11-25 19:06:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24107 states to 24107 states and 34974 transitions. [2021-11-25 19:06:29,954 INFO L78 Accepts]: Start accepts. Automaton has 24107 states and 34974 transitions. Word has length 251 [2021-11-25 19:06:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:29,955 INFO L470 AbstractCegarLoop]: Abstraction has 24107 states and 34974 transitions. [2021-11-25 19:06:29,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-25 19:06:29,955 INFO L276 IsEmpty]: Start isEmpty. Operand 24107 states and 34974 transitions. [2021-11-25 19:06:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-25 19:06:29,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:29,987 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:29,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:06:29,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:29,989 INFO L85 PathProgramCache]: Analyzing trace with hash 450594115, now seen corresponding path program 1 times [2021-11-25 19:06:29,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:29,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901196570] [2021-11-25 19:06:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:29,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2021-11-25 19:06:30,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901196570] [2021-11-25 19:06:30,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901196570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:30,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:30,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:06:30,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778677604] [2021-11-25 19:06:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:30,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:06:30,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:06:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:06:30,907 INFO L87 Difference]: Start difference. First operand 24107 states and 34974 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:06:36,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:06:38,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:41,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:44,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:06:46,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:50,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:55,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:06:58,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:02,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:05,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:07,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:09,997 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:12,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:13,673 INFO L93 Difference]: Finished difference Result 42063 states and 62123 transitions. [2021-11-25 19:07:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:07:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 313 [2021-11-25 19:07:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:13,873 INFO L225 Difference]: With dead ends: 42063 [2021-11-25 19:07:13,873 INFO L226 Difference]: Without dead ends: 42061 [2021-11-25 19:07:13,899 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:07:13,901 INFO L933 BasicCegarLoop]: 5163 mSDtfsCounter, 4637 mSDsluCounter, 10026 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 215 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 14060 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:13,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4856 Valid, 14060 Invalid, 2217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [215 Valid, 1990 Invalid, 12 Unknown, 0 Unchecked, 41.8s Time] [2021-11-25 19:07:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42061 states. [2021-11-25 19:07:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42061 to 35117. [2021-11-25 19:07:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35117 states, 22395 states have (on average 1.3358785443179282) internal successors, (29917), 22618 states have internal predecessors, (29917), 10467 states have call successors, (10467), 2266 states have call predecessors, (10467), 2253 states have return successors, (10504), 10343 states have call predecessors, (10504), 10464 states have call successors, (10504) [2021-11-25 19:07:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35117 states to 35117 states and 50888 transitions. [2021-11-25 19:07:16,020 INFO L78 Accepts]: Start accepts. Automaton has 35117 states and 50888 transitions. Word has length 313 [2021-11-25 19:07:16,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:16,021 INFO L470 AbstractCegarLoop]: Abstraction has 35117 states and 50888 transitions. [2021-11-25 19:07:16,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 19:07:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 35117 states and 50888 transitions. [2021-11-25 19:07:16,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-25 19:07:16,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:16,054 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-25 19:07:16,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:07:16,055 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:16,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:16,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2078651935, now seen corresponding path program 1 times [2021-11-25 19:07:16,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:16,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377156839] [2021-11-25 19:07:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:16,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:07:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2021-11-25 19:07:16,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:07:16,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377156839] [2021-11-25 19:07:16,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377156839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:07:16,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:07:16,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:07:16,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568502779] [2021-11-25 19:07:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:07:16,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:07:16,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:07:16,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:07:16,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:07:16,996 INFO L87 Difference]: Start difference. First operand 35117 states and 50888 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 19:07:22,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:07:25,979 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:28,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:30,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:07:33,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:35,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:39,618 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:42,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:46,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:48,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:50,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:53,166 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:55,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:07:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:07:56,385 INFO L93 Difference]: Finished difference Result 84742 states and 122834 transitions. [2021-11-25 19:07:56,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:07:56,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 307 [2021-11-25 19:07:56,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:07:56,624 INFO L225 Difference]: With dead ends: 84742 [2021-11-25 19:07:56,625 INFO L226 Difference]: Without dead ends: 51267 [2021-11-25 19:07:56,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:07:56,845 INFO L933 BasicCegarLoop]: 6475 mSDtfsCounter, 3325 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 4 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 10040 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:07:56,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3330 Valid, 10040 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1435 Invalid, 11 Unknown, 0 Unchecked, 37.9s Time] [2021-11-25 19:07:56,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51267 states. [2021-11-25 19:07:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51267 to 51239. [2021-11-25 19:07:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51239 states, 32663 states have (on average 1.3357927930686098) internal successors, (43631), 32998 states have internal predecessors, (43631), 15275 states have call successors, (15275), 3324 states have call predecessors, (15275), 3299 states have return successors, (15333), 15081 states have call predecessors, (15333), 15272 states have call successors, (15333) [2021-11-25 19:07:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51239 states to 51239 states and 74239 transitions. [2021-11-25 19:07:58,796 INFO L78 Accepts]: Start accepts. Automaton has 51239 states and 74239 transitions. Word has length 307 [2021-11-25 19:07:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:07:58,799 INFO L470 AbstractCegarLoop]: Abstraction has 51239 states and 74239 transitions. [2021-11-25 19:07:58,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 19:07:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 51239 states and 74239 transitions. [2021-11-25 19:07:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-25 19:07:58,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:07:58,842 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 6, 6, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:07:58,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:07:58,843 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:07:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:07:58,844 INFO L85 PathProgramCache]: Analyzing trace with hash 967711176, now seen corresponding path program 1 times [2021-11-25 19:07:58,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:07:58,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615070919] [2021-11-25 19:07:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:07:58,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:07:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2021-11-25 19:08:00,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:00,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615070919] [2021-11-25 19:08:00,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615070919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:08:00,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260843018] [2021-11-25 19:08:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:00,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:08:00,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:08:00,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:08:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:03,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 14119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:08:03,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:08:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 1181 trivial. 0 not checked. [2021-11-25 19:08:04,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:08:04,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260843018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:04,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:08:04,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:08:04,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053464027] [2021-11-25 19:08:04,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:04,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:08:04,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:08:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:08:04,575 INFO L87 Difference]: Start difference. First operand 51239 states and 74239 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 19:08:10,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:13,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:17,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:20,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:24,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:27,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:31,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:33,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:35,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:38,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:40,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:08:41,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:08:41,538 INFO L93 Difference]: Finished difference Result 148201 states and 214816 transitions. [2021-11-25 19:08:41,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:08:41,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 330 [2021-11-25 19:08:41,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:08:42,217 INFO L225 Difference]: With dead ends: 148201 [2021-11-25 19:08:42,217 INFO L226 Difference]: Without dead ends: 98604 [2021-11-25 19:08:42,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:08:42,353 INFO L933 BasicCegarLoop]: 4268 mSDtfsCounter, 3286 mSDsluCounter, 3996 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 14 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3293 SdHoareTripleChecker+Valid, 7785 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:08:42,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3293 Valid, 7785 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1025 Invalid, 11 Unknown, 0 Unchecked, 34.5s Time] [2021-11-25 19:08:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98604 states. [2021-11-25 19:08:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98604 to 98585. [2021-11-25 19:08:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98585 states, 63067 states have (on average 1.335880888578813) internal successors, (84250), 63612 states have internal predecessors, (84250), 29173 states have call successors, (29173), 6392 states have call predecessors, (29173), 6343 states have return successors, (29294), 28907 states have call predecessors, (29294), 29170 states have call successors, (29294) [2021-11-25 19:08:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98585 states to 98585 states and 142717 transitions. [2021-11-25 19:08:47,175 INFO L78 Accepts]: Start accepts. Automaton has 98585 states and 142717 transitions. Word has length 330 [2021-11-25 19:08:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:08:47,175 INFO L470 AbstractCegarLoop]: Abstraction has 98585 states and 142717 transitions. [2021-11-25 19:08:47,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 19:08:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 98585 states and 142717 transitions. [2021-11-25 19:08:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-25 19:08:47,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:08:47,249 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:08:47,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:08:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:08:47,478 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:08:47,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:08:47,478 INFO L85 PathProgramCache]: Analyzing trace with hash 2068858621, now seen corresponding path program 1 times [2021-11-25 19:08:47,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:08:47,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020897986] [2021-11-25 19:08:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:08:47,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:08:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:08:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2021-11-25 19:08:48,504 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:08:48,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020897986] [2021-11-25 19:08:48,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020897986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:08:48,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:08:48,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:08:48,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80743312] [2021-11-25 19:08:48,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:08:48,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:08:48,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:08:48,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:08:48,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:08:48,508 INFO L87 Difference]: Start difference. First operand 98585 states and 142717 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 19:08:53,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:08:58,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:00,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:04,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:09:06,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:09,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:10,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:15,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:18,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:22,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:25,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:27,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:29,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:32,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:09:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:34,008 INFO L93 Difference]: Finished difference Result 226894 states and 328444 transitions. [2021-11-25 19:09:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:09:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 333 [2021-11-25 19:09:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:34,818 INFO L225 Difference]: With dead ends: 226894 [2021-11-25 19:09:34,818 INFO L226 Difference]: Without dead ends: 129969 [2021-11-25 19:09:35,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:09:35,289 INFO L933 BasicCegarLoop]: 6427 mSDtfsCounter, 3274 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3278 SdHoareTripleChecker+Valid, 9972 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:35,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3278 Valid, 9972 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1445 Invalid, 11 Unknown, 0 Unchecked, 41.4s Time] [2021-11-25 19:09:35,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129969 states. [2021-11-25 19:09:39,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129969 to 129942. [2021-11-25 19:09:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129942 states, 83164 states have (on average 1.3354576499446875) internal successors, (111062), 83859 states have internal predecessors, (111062), 38412 states have call successors, (38412), 8425 states have call predecessors, (38412), 8364 states have return successors, (38581), 38092 states have call predecessors, (38581), 38409 states have call successors, (38581) [2021-11-25 19:09:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129942 states to 129942 states and 188055 transitions. [2021-11-25 19:09:40,958 INFO L78 Accepts]: Start accepts. Automaton has 129942 states and 188055 transitions. Word has length 333 [2021-11-25 19:09:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:40,959 INFO L470 AbstractCegarLoop]: Abstraction has 129942 states and 188055 transitions. [2021-11-25 19:09:40,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 19:09:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand 129942 states and 188055 transitions. [2021-11-25 19:09:40,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-25 19:09:40,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:40,996 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 6, 6, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:40,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:09:40,997 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:40,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash 3937192, now seen corresponding path program 1 times [2021-11-25 19:09:40,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:40,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719922638] [2021-11-25 19:09:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:40,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 21 proven. 16 refuted. 0 times theorem prover too weak. 1361 trivial. 0 not checked. [2021-11-25 19:09:42,319 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:42,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719922638] [2021-11-25 19:09:42,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719922638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:42,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309078700] [2021-11-25 19:09:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:42,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:42,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:42,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:42,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:09:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:45,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 14300 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:09:45,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1398 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2021-11-25 19:09:46,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:46,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309078700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:46,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:09:46,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-25 19:09:46,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384702351] [2021-11-25 19:09:46,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:46,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:09:46,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:09:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:09:46,835 INFO L87 Difference]: Start difference. First operand 129942 states and 188055 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 19:09:50,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:09:51,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:09:55,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:01,829 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:06,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:09,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:13,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:15,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:17,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:20,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:22,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:23,720 INFO L93 Difference]: Finished difference Result 177661 states and 257082 transitions. [2021-11-25 19:10:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:10:23,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 339 [2021-11-25 19:10:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:24,543 INFO L225 Difference]: With dead ends: 177661 [2021-11-25 19:10:24,543 INFO L226 Difference]: Without dead ends: 134562 [2021-11-25 19:10:24,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:10:24,686 INFO L933 BasicCegarLoop]: 4286 mSDtfsCounter, 3380 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 14 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 7803 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:24,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3383 Valid, 7803 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1029 Invalid, 9 Unknown, 0 Unchecked, 33.7s Time] [2021-11-25 19:10:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134562 states. [2021-11-25 19:10:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134562 to 134555. [2021-11-25 19:10:29,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134555 states, 86070 states have (on average 1.334820494945974) internal successors, (114888), 86793 states have internal predecessors, (114888), 39776 states have call successors, (39776), 8758 states have call predecessors, (39776), 8707 states have return successors, (39949), 39453 states have call predecessors, (39949), 39773 states have call successors, (39949) [2021-11-25 19:10:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134555 states to 134555 states and 194613 transitions. [2021-11-25 19:10:30,388 INFO L78 Accepts]: Start accepts. Automaton has 134555 states and 194613 transitions. Word has length 339 [2021-11-25 19:10:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:30,394 INFO L470 AbstractCegarLoop]: Abstraction has 134555 states and 194613 transitions. [2021-11-25 19:10:30,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 19:10:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 134555 states and 194613 transitions. [2021-11-25 19:10:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-25 19:10:30,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:30,456 INFO L514 BasicCegarLoop]: trace histogram [24, 16, 16, 16, 16, 16, 16, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 19:10:30,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-25 19:10:30,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72d5a7da-f708-474b-abce-4c9fe4ed539a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 19:10:30,678 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:30,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2134475037, now seen corresponding path program 1 times [2021-11-25 19:10:30,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:30,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032715048] [2021-11-25 19:10:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:30,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1403 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 1362 trivial. 0 not checked. [2021-11-25 19:10:31,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:10:31,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032715048] [2021-11-25 19:10:31,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032715048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:31,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:10:31,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:10:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291109472] [2021-11-25 19:10:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:31,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:10:31,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:10:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:10:31,844 INFO L87 Difference]: Start difference. First operand 134555 states and 194613 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 19:10:37,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:10:40,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:44,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:10:48,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:51,358 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:53,062 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:57,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:00,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:04,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:06,843 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:09,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:11,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:13,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:11:16,367 INFO L93 Difference]: Finished difference Result 186697 states and 269937 transitions. [2021-11-25 19:11:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:11:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 342 [2021-11-25 19:11:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:11:17,001 INFO L225 Difference]: With dead ends: 186697 [2021-11-25 19:11:17,001 INFO L226 Difference]: Without dead ends: 139387 [2021-11-25 19:11:17,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:11:17,144 INFO L933 BasicCegarLoop]: 6464 mSDtfsCounter, 3343 mSDsluCounter, 4030 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 10009 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:11:17,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3346 Valid, 10009 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1456 Invalid, 11 Unknown, 0 Unchecked, 41.0s Time] [2021-11-25 19:11:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139387 states. [2021-11-25 19:11:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139387 to 139360. [2021-11-25 19:11:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139360 states, 89106 states have (on average 1.3342535856171303) internal successors, (118890), 89855 states have internal predecessors, (118890), 41174 states have call successors, (41174), 9123 states have call predecessors, (41174), 9078 states have return successors, (41349), 40846 states have call predecessors, (41349), 41171 states have call successors, (41349) [2021-11-25 19:11:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139360 states to 139360 states and 201413 transitions. [2021-11-25 19:11:22,799 INFO L78 Accepts]: Start accepts. Automaton has 139360 states and 201413 transitions. Word has length 342 [2021-11-25 19:11:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:11:22,800 INFO L470 AbstractCegarLoop]: Abstraction has 139360 states and 201413 transitions. [2021-11-25 19:11:22,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-25 19:11:22,800 INFO L276 IsEmpty]: Start isEmpty. Operand 139360 states and 201413 transitions. [2021-11-25 19:11:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-25 19:11:23,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:11:23,251 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:11:23,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 19:11:23,252 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:11:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:11:23,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1023224545, now seen corresponding path program 1 times [2021-11-25 19:11:23,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:11:23,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974661060] [2021-11-25 19:11:23,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:11:23,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:11:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:11:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2021-11-25 19:11:24,010 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:11:24,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974661060] [2021-11-25 19:11:24,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974661060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:24,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:11:24,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:11:24,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907351460] [2021-11-25 19:11:24,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:24,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:11:24,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:11:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:11:24,013 INFO L87 Difference]: Start difference. First operand 139360 states and 201413 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 19:11:27,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:11:29,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:11:35,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:37,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:40,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:42,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:11:45,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:47,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:50,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:52,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:11:57,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:01,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:05,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:07,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:10,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:12,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:15,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:12:16,560 INFO L93 Difference]: Finished difference Result 324856 states and 469698 transitions. [2021-11-25 19:12:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:12:16,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 350 [2021-11-25 19:12:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:12:17,731 INFO L225 Difference]: With dead ends: 324856 [2021-11-25 19:12:17,731 INFO L226 Difference]: Without dead ends: 187156 [2021-11-25 19:12:18,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:18,359 INFO L933 BasicCegarLoop]: 6493 mSDtfsCounter, 3325 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 8 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 10038 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:12:18,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3330 Valid, 10038 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1457 Invalid, 13 Unknown, 0 Unchecked, 47.5s Time] [2021-11-25 19:12:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187156 states. [2021-11-25 19:12:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187156 to 187141. [2021-11-25 19:12:25,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187141 states, 119715 states have (on average 1.3337760514555403) internal successors, (159673), 120686 states have internal predecessors, (159673), 55267 states have call successors, (55267), 12214 states have call predecessors, (55267), 12157 states have return successors, (55505), 54867 states have call predecessors, (55505), 55264 states have call successors, (55505) [2021-11-25 19:12:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187141 states to 187141 states and 270445 transitions. [2021-11-25 19:12:27,556 INFO L78 Accepts]: Start accepts. Automaton has 187141 states and 270445 transitions. Word has length 350 [2021-11-25 19:12:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:12:27,557 INFO L470 AbstractCegarLoop]: Abstraction has 187141 states and 270445 transitions. [2021-11-25 19:12:27,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-25 19:12:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 187141 states and 270445 transitions. [2021-11-25 19:12:27,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-25 19:12:27,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:12:27,670 INFO L514 BasicCegarLoop]: trace histogram [25, 16, 16, 16, 16, 16, 16, 7, 7, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 19:12:27,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:12:27,682 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:12:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:12:27,682 INFO L85 PathProgramCache]: Analyzing trace with hash 24915631, now seen corresponding path program 1 times [2021-11-25 19:12:27,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:12:27,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671940427] [2021-11-25 19:12:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:12:27,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:12:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:12:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1468 trivial. 0 not checked. [2021-11-25 19:12:29,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:29,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671940427] [2021-11-25 19:12:29,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671940427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:12:29,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:12:29,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:12:29,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012623593] [2021-11-25 19:12:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:12:29,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:12:29,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:12:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:12:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:12:29,123 INFO L87 Difference]: Start difference. First operand 187141 states and 270445 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 19:12:37,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:12:41,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:43,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:45,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:48,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:12:50,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []