./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-rndis_wlan.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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/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-rndis_wlan.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/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 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:29:36,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:29:36,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:29:36,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:29:36,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:29:36,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:29:36,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:29:36,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:29:36,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:29:36,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:29:36,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:29:36,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:29:36,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:29:36,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:29:36,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:29:36,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:29:36,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:29:36,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:29:36,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:29:36,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:29:36,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:29:36,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:29:36,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:29:36,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:29:36,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:29:36,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:29:36,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:29:36,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:29:36,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:29:36,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:29:36,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:29:36,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:29:36,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:29:36,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:29:36,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:29:36,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:29:36,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:29:36,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:29:36,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:29:36,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:29:36,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:29:36,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:29:36,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:29:36,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:29:36,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:29:36,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:29:36,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:29:36,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:29:36,444 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:29:36,445 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:29:36,445 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:29:36,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:29:36,446 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:29:36,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:29:36,446 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:29:36,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:29:36,453 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:29:36,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:29:36,455 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:29:36,455 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:29:36,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:29:36,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:29:36,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:29:36,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:29:36,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:29:36,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:29:36,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:29:36,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:29:36,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:29:36,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:29:36,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:29:36,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:29:36,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:29:36,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:29:36,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:29:36,461 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:29:36,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:29:36,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:29:36,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:29:36,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:29:36,463 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 [2021-11-25 18:29:36,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:29:36,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:29:36,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:29:36,747 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:29:36,748 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:29:36,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 18:29:36,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/data/5f78cff3d/b332067e27a54a608fdbe06300c531db/FLAG07ea4fe68 [2021-11-25 18:29:37,866 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:29:37,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 18:29:37,939 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/data/5f78cff3d/b332067e27a54a608fdbe06300c531db/FLAG07ea4fe68 [2021-11-25 18:29:38,187 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/data/5f78cff3d/b332067e27a54a608fdbe06300c531db [2021-11-25 18:29:38,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:29:38,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:29:38,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:29:38,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:29:38,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:29:38,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:38" (1/1) ... [2021-11-25 18:29:38,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e03e019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:38, skipping insertion in model container [2021-11-25 18:29:38,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:29:38" (1/1) ... [2021-11-25 18:29:38,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:29:38,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:29:41,826 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2021-11-25 18:29:41,829 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2021-11-25 18:29:41,829 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2021-11-25 18:29:41,830 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2021-11-25 18:29:41,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:29:41,898 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:29:42,536 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2021-11-25 18:29:42,537 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2021-11-25 18:29:42,538 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2021-11-25 18:29:42,538 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_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2021-11-25 18:29:42,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:29:42,802 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:29:42,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42 WrapperNode [2021-11-25 18:29:42,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:29:42,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:29:42,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:29:42,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:29:42,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:42,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,321 INFO L137 Inliner]: procedures = 396, calls = 4490, calls flagged for inlining = 219, calls inlined = 198, statements flattened = 8918 [2021-11-25 18:29:43,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:29:43,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:29:43,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:29:43,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:29:43,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:29:43,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:29:43,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:29:43,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:29:43,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (1/1) ... [2021-11-25 18:29:43,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:29:43,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:29:43,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:29:43,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1e3d2f-5ba3-4c18-8f54-57e14fa0f113/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:29:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2021-11-25 18:29:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2021-11-25 18:29:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-25 18:29:43,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-25 18:29:43,935 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2021-11-25 18:29:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2021-11-25 18:29:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2021-11-25 18:29:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2021-11-25 18:29:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:29:43,936 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:29:43,936 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2021-11-25 18:29:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2021-11-25 18:29:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2021-11-25 18:29:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2021-11-25 18:29:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:29:43,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:29:43,937 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2021-11-25 18:29:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2021-11-25 18:29:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2021-11-25 18:29:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2021-11-25 18:29:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2021-11-25 18:29:43,938 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2021-11-25 18:29:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2021-11-25 18:29:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2021-11-25 18:29:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2021-11-25 18:29:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2021-11-25 18:29:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2021-11-25 18:29:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2021-11-25 18:29:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2021-11-25 18:29:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2021-11-25 18:29:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:29:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:29:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2021-11-25 18:29:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2021-11-25 18:29:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 18:29:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 18:29:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:29:43,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:29:43,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:29:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2021-11-25 18:29:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2021-11-25 18:29:43,942 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2021-11-25 18:29:43,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2021-11-25 18:29:43,943 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2021-11-25 18:29:43,944 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2021-11-25 18:29:43,944 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-25 18:29:43,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-25 18:29:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 18:29:43,945 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 18:29:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2021-11-25 18:29:43,945 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2021-11-25 18:29:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2021-11-25 18:29:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2021-11-25 18:29:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2021-11-25 18:29:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2021-11-25 18:29:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 18:29:43,947 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 18:29:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 18:29:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2021-11-25 18:29:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2021-11-25 18:29:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2021-11-25 18:29:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2021-11-25 18:29:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:29:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:29:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:29:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2021-11-25 18:29:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2021-11-25 18:29:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2021-11-25 18:29:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2021-11-25 18:29:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:29:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2021-11-25 18:29:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2021-11-25 18:29:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 18:29:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 18:29:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:29:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:29:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2021-11-25 18:29:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2021-11-25 18:29:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2021-11-25 18:29:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2021-11-25 18:29:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2021-11-25 18:29:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2021-11-25 18:29:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:29:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2021-11-25 18:29:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2021-11-25 18:29:43,954 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2021-11-25 18:29:43,955 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2021-11-25 18:29:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:29:43,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:29:43,955 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2021-11-25 18:29:43,955 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2021-11-25 18:29:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:29:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:29:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:29:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2021-11-25 18:29:43,956 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2021-11-25 18:29:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:29:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:29:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2021-11-25 18:29:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2021-11-25 18:29:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:29:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2021-11-25 18:29:43,958 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2021-11-25 18:29:43,958 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2021-11-25 18:29:43,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2021-11-25 18:29:43,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:29:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:29:43,963 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2021-11-25 18:29:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2021-11-25 18:29:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2021-11-25 18:29:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2021-11-25 18:29:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 18:29:43,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 18:29:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2021-11-25 18:29:43,966 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2021-11-25 18:29:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 18:29:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 18:29:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 18:29:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 18:29:43,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:29:43,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:29:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:29:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:29:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-25 18:29:43,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-25 18:29:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 18:29:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:29:43,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:29:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:29:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-25 18:29:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2021-11-25 18:29:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 18:29:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 18:29:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2021-11-25 18:29:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2021-11-25 18:29:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 18:29:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 18:29:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2021-11-25 18:29:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2021-11-25 18:29:43,975 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2021-11-25 18:29:43,975 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2021-11-25 18:29:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2021-11-25 18:29:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2021-11-25 18:29:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2021-11-25 18:29:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2021-11-25 18:29:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2021-11-25 18:29:43,976 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2021-11-25 18:29:43,976 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:29:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:29:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2021-11-25 18:29:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2021-11-25 18:29:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:29:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:29:43,977 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-25 18:29:43,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-25 18:29:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 18:29:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 18:29:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:29:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:29:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:29:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2021-11-25 18:29:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2021-11-25 18:29:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:29:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2021-11-25 18:29:43,979 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2021-11-25 18:29:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2021-11-25 18:29:43,979 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2021-11-25 18:29:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2021-11-25 18:29:43,979 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2021-11-25 18:29:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 18:29:43,980 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 18:29:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:29:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2021-11-25 18:29:43,980 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2021-11-25 18:29:43,980 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 18:29:43,980 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 18:29:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2021-11-25 18:29:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2021-11-25 18:29:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:29:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:29:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 18:29:43,981 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 18:29:43,981 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2021-11-25 18:29:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2021-11-25 18:29:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:29:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:29:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 18:29:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 18:29:43,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2021-11-25 18:29:43,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2021-11-25 18:29:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-11-25 18:29:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-11-25 18:29:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:29:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:29:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2021-11-25 18:29:43,983 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2021-11-25 18:29:43,983 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2021-11-25 18:29:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2021-11-25 18:29:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2021-11-25 18:29:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2021-11-25 18:29:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:29:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:29:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2021-11-25 18:29:43,984 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2021-11-25 18:29:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2021-11-25 18:29:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2021-11-25 18:29:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2021-11-25 18:29:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2021-11-25 18:29:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:29:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2021-11-25 18:29:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2021-11-25 18:29:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:29:43,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:29:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2021-11-25 18:29:43,986 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2021-11-25 18:29:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2021-11-25 18:29:43,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2021-11-25 18:29:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-25 18:29:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-25 18:29:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2021-11-25 18:29:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2021-11-25 18:29:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:29:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:29:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:29:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:29:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2021-11-25 18:29:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2021-11-25 18:29:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2021-11-25 18:29:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2021-11-25 18:29:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2021-11-25 18:29:43,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2021-11-25 18:29:43,988 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2021-11-25 18:29:43,990 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2021-11-25 18:29:43,993 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2021-11-25 18:29:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2021-11-25 18:29:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 18:29:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:29:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-11-25 18:29:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-11-25 18:29:43,994 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2021-11-25 18:29:43,994 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2021-11-25 18:29:43,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:29:43,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:29:45,100 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:29:45,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:29:45,502 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:30:06,148 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:30:06,422 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:30:07,919 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:30:07,919 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:30:07,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:30:07 BoogieIcfgContainer [2021-11-25 18:30:07,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:30:07,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:30:07,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:30:07,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:30:07,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:29:38" (1/3) ... [2021-11-25 18:30:07,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6365e152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:30:07, skipping insertion in model container [2021-11-25 18:30:07,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:29:42" (2/3) ... [2021-11-25 18:30:07,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6365e152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:30:07, skipping insertion in model container [2021-11-25 18:30:07,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:30:07" (3/3) ... [2021-11-25 18:30:07,935 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2021-11-25 18:30:07,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:30:07,941 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:30:08,012 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:30:08,034 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 18:30:08,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:30:08,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) [2021-11-25 18:30:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-25 18:30:08,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:30:08,146 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 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 18:30:08,147 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 18:30:08,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:30:08,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1795498274, now seen corresponding path program 1 times [2021-11-25 18:30:08,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:30:08,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170425618] [2021-11-25 18:30:08,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:30:08,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:30:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:30:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2021-11-25 18:30:09,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:30:09,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170425618] [2021-11-25 18:30:09,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170425618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:30:09,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:30:09,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:30:09,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997083255] [2021-11-25 18:30:09,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:30:09,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:30:09,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:30:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:30:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:30:09,504 INFO L87 Difference]: Start difference. First operand has 2014 states, 1226 states have (on average 1.3140293637846656) internal successors, (1611), 1229 states have internal predecessors, (1611), 674 states have call successors, (674), 113 states have call predecessors, (674), 112 states have return successors, (666), 666 states have call predecessors, (666), 666 states have call successors, (666) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 18:30:13,030 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 18:30:15,531 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 18:30:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:30:17,285 INFO L93 Difference]: Finished difference Result 5818 states and 8563 transitions. [2021-11-25 18:30:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:30:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) Word has length 384 [2021-11-25 18:30:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:30:17,355 INFO L225 Difference]: With dead ends: 5818 [2021-11-25 18:30:17,356 INFO L226 Difference]: Without dead ends: 3865 [2021-11-25 18:30:17,379 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 18:30:17,384 INFO L933 BasicCegarLoop]: 3165 mSDtfsCounter, 2754 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:30:17,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2761 Valid, 5624 Invalid, 928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 913 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-25 18:30:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-11-25 18:30:17,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2021-11-25 18:30:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 2370 states have (on average 1.310548523206751) internal successors, (3106), 2375 states have internal predecessors, (3106), 1270 states have call successors, (1270), 222 states have call predecessors, (1270), 221 states have return successors, (1274), 1267 states have call predecessors, (1274), 1267 states have call successors, (1274) [2021-11-25 18:30:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5650 transitions. [2021-11-25 18:30:17,819 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5650 transitions. Word has length 384 [2021-11-25 18:30:17,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:30:17,826 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 5650 transitions. [2021-11-25 18:30:17,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41) [2021-11-25 18:30:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5650 transitions. [2021-11-25 18:30:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-25 18:30:17,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:30:17,855 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:17,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:30:17,856 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:30:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:30:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1026032585, now seen corresponding path program 1 times [2021-11-25 18:30:17,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:30:17,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144546633] [2021-11-25 18:30:17,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:30:17,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:30:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:30:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2021-11-25 18:30:18,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:30:18,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144546633] [2021-11-25 18:30:18,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144546633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:30:18,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:30:18,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:30:18,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98893172] [2021-11-25 18:30:18,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:30:18,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:30:18,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:30:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:30:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:30:18,423 INFO L87 Difference]: Start difference. First operand 3863 states and 5650 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-25 18:30:22,751 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 18:30:25,114 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 18:30:26,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:30:26,211 INFO L93 Difference]: Finished difference Result 11261 states and 16470 transitions. [2021-11-25 18:30:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:30:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 438 [2021-11-25 18:30:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:30:26,303 INFO L225 Difference]: With dead ends: 11261 [2021-11-25 18:30:26,303 INFO L226 Difference]: Without dead ends: 7471 [2021-11-25 18:30:26,333 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 18:30:26,335 INFO L933 BasicCegarLoop]: 3137 mSDtfsCounter, 2641 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:30:26,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 5596 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 908 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-25 18:30:26,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2021-11-25 18:30:26,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7460. [2021-11-25 18:30:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 4587 states have (on average 1.3091345105733594) internal successors, (6005), 4601 states have internal predecessors, (6005), 2437 states have call successors, (2437), 435 states have call predecessors, (2437), 434 states have return successors, (2455), 2427 states have call predecessors, (2455), 2434 states have call successors, (2455) [2021-11-25 18:30:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 10897 transitions. [2021-11-25 18:30:26,897 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 10897 transitions. Word has length 438 [2021-11-25 18:30:26,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:30:26,900 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 10897 transitions. [2021-11-25 18:30:26,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-25 18:30:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 10897 transitions. [2021-11-25 18:30:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-25 18:30:26,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:30:26,927 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:30:26,927 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 18:30:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:30:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1237579625, now seen corresponding path program 1 times [2021-11-25 18:30:26,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:30:26,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656875802] [2021-11-25 18:30:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:30:26,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:30:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:30:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5375 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5375 trivial. 0 not checked. [2021-11-25 18:30:27,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:30:27,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656875802] [2021-11-25 18:30:27,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656875802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:30:27,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:30:27,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:30:27,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796545376] [2021-11-25 18:30:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:30:27,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:30:27,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:30:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:30:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:30:27,593 INFO L87 Difference]: Start difference. First operand 7460 states and 10897 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 18:30:31,551 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 18:30:34,607 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:30:36,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:30:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:30:38,613 INFO L93 Difference]: Finished difference Result 11423 states and 16668 transitions. [2021-11-25 18:30:38,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:30:38,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2021-11-25 18:30:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:30:38,721 INFO L225 Difference]: With dead ends: 11423 [2021-11-25 18:30:38,722 INFO L226 Difference]: Without dead ends: 11398 [2021-11-25 18:30:38,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:30:38,733 INFO L933 BasicCegarLoop]: 3210 mSDtfsCounter, 2809 mSDsluCounter, 6466 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2816 SdHoareTripleChecker+Valid, 8793 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:30:38,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2816 Valid, 8793 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1342 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-11-25 18:30:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11398 states. [2021-11-25 18:30:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11398 to 11390. [2021-11-25 18:30:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11390 states, 7009 states have (on average 1.3103153088885717) internal successors, (9184), 7029 states have internal predecessors, (9184), 3693 states have call successors, (3693), 687 states have call predecessors, (3693), 686 states have return successors, (3732), 3679 states have call predecessors, (3732), 3690 states have call successors, (3732) [2021-11-25 18:30:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11390 states to 11390 states and 16609 transitions. [2021-11-25 18:30:39,616 INFO L78 Accepts]: Start accepts. Automaton has 11390 states and 16609 transitions. Word has length 432 [2021-11-25 18:30:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:30:39,617 INFO L470 AbstractCegarLoop]: Abstraction has 11390 states and 16609 transitions. [2021-11-25 18:30:39,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 18:30:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 11390 states and 16609 transitions. [2021-11-25 18:30:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2021-11-25 18:30:39,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:30:39,658 INFO L514 BasicCegarLoop]: trace histogram [38, 36, 36, 36, 36, 36, 36, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:30:39,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:30:39,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:30:39,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:30:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1074018903, now seen corresponding path program 1 times [2021-11-25 18:30:39,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:30:39,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762489517] [2021-11-25 18:30:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:30:39,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:30:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:30:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5276 trivial. 0 not checked. [2021-11-25 18:30:40,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:30:40,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762489517] [2021-11-25 18:30:40,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762489517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:30:40,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:30:40,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:30:40,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681002926] [2021-11-25 18:30:40,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:30:40,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:30:40,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:30:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:30:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:30:40,161 INFO L87 Difference]: Start difference. First operand 11390 states and 16609 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 18:30:43,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:30:45,899 WARN L534 Checker$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 18:30:47,969 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 18:30:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:30:48,874 INFO L93 Difference]: Finished difference Result 24402 states and 35601 transitions. [2021-11-25 18:30:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:30:48,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 460 [2021-11-25 18:30:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:30:48,951 INFO L225 Difference]: With dead ends: 24402 [2021-11-25 18:30:48,951 INFO L226 Difference]: Without dead ends: 13085 [2021-11-25 18:30:49,016 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 18:30:49,017 INFO L933 BasicCegarLoop]: 3190 mSDtfsCounter, 2641 mSDsluCounter, 2903 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 5667 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:30:49,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 5667 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 18:30:49,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13085 states. [2021-11-25 18:30:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13085 to 13074. [2021-11-25 18:30:49,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13074 states, 8042 states have (on average 1.3085053469286247) internal successors, (10523), 8065 states have internal predecessors, (10523), 4248 states have call successors, (4248), 784 states have call predecessors, (4248), 782 states have return successors, (4308), 4231 states have call predecessors, (4308), 4245 states have call successors, (4308) [2021-11-25 18:30:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13074 states to 13074 states and 19079 transitions. [2021-11-25 18:30:49,906 INFO L78 Accepts]: Start accepts. Automaton has 13074 states and 19079 transitions. Word has length 460 [2021-11-25 18:30:49,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:30:49,908 INFO L470 AbstractCegarLoop]: Abstraction has 13074 states and 19079 transitions. [2021-11-25 18:30:49,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-25 18:30:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13074 states and 19079 transitions. [2021-11-25 18:30:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2021-11-25 18:30:49,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:30:49,959 INFO L514 BasicCegarLoop]: trace histogram [39, 36, 36, 36, 36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:30:49,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:30:49,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:30:49,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:30:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1098845795, now seen corresponding path program 1 times [2021-11-25 18:30:49,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:30:49,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710851706] [2021-11-25 18:30:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:30:49,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:30:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:30:50,434 INFO L134 CoverageAnalysis]: Checked inductivity of 5277 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5274 trivial. 0 not checked. [2021-11-25 18:30:50,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:30:50,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710851706] [2021-11-25 18:30:50,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710851706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:30:50,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:30:50,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:30:50,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837035505] [2021-11-25 18:30:50,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:30:50,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:30:50,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:30:50,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:30:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:30:50,437 INFO L87 Difference]: Start difference. First operand 13074 states and 19079 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:30:54,598 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 18:30:56,839 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 18:30:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:30:57,418 INFO L93 Difference]: Finished difference Result 31501 states and 45798 transitions. [2021-11-25 18:30:57,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:30:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 478 [2021-11-25 18:30:57,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:30:57,517 INFO L225 Difference]: With dead ends: 31501 [2021-11-25 18:30:57,517 INFO L226 Difference]: Without dead ends: 18500 [2021-11-25 18:30:57,569 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 18:30:57,570 INFO L933 BasicCegarLoop]: 2956 mSDtfsCounter, 1569 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 5381 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:30:57,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1569 Valid, 5381 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 954 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-25 18:30:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18500 states. [2021-11-25 18:30:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18500 to 18479. [2021-11-25 18:30:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18479 states, 11426 states have (on average 1.3115701032732365) internal successors, (14986), 11475 states have internal predecessors, (14986), 5822 states have call successors, (5822), 1232 states have call predecessors, (5822), 1229 states have return successors, (5938), 5777 states have call predecessors, (5938), 5819 states have call successors, (5938) [2021-11-25 18:30:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18479 states to 18479 states and 26746 transitions. [2021-11-25 18:30:58,532 INFO L78 Accepts]: Start accepts. Automaton has 18479 states and 26746 transitions. Word has length 478 [2021-11-25 18:30:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:30:58,533 INFO L470 AbstractCegarLoop]: Abstraction has 18479 states and 26746 transitions. [2021-11-25 18:30:58,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-25 18:30:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 18479 states and 26746 transitions. [2021-11-25 18:30:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-11-25 18:30:58,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:30:58,582 INFO L514 BasicCegarLoop]: trace histogram [41, 36, 36, 36, 36, 36, 36, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:30:58,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:30:58,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:30:58,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:30:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -500108068, now seen corresponding path program 1 times [2021-11-25 18:30:58,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:30:58,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163865820] [2021-11-25 18:30:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:30:58,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:30:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:30:59,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5629 trivial. 0 not checked. [2021-11-25 18:30:59,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:30:59,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163865820] [2021-11-25 18:30:59,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163865820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:30:59,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:30:59,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:30:59,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438904150] [2021-11-25 18:30:59,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:30:59,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:30:59,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:30:59,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:30:59,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:30:59,324 INFO L87 Difference]: Start difference. First operand 18479 states and 26746 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 18:31:02,711 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 18:31:04,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:31:06,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:31:09,298 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 18:31:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:31:13,713 INFO L93 Difference]: Finished difference Result 26541 states and 39565 transitions. [2021-11-25 18:31:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:31:13,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 513 [2021-11-25 18:31:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:31:13,885 INFO L225 Difference]: With dead ends: 26541 [2021-11-25 18:31:13,885 INFO L226 Difference]: Without dead ends: 26539 [2021-11-25 18:31:13,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:31:13,910 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 4787 mSDsluCounter, 8321 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 368 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 11690 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:31:13,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5165 Valid, 11690 Invalid, 2520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [368 Valid, 2148 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2021-11-25 18:31:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26539 states. [2021-11-25 18:31:15,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26539 to 18902. [2021-11-25 18:31:15,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18902 states, 11689 states have (on average 1.311232782958337) internal successors, (15327), 11742 states have internal predecessors, (15327), 5910 states have call successors, (5910), 1302 states have call predecessors, (5910), 1301 states have return successors, (6026), 5863 states have call predecessors, (6026), 5907 states have call successors, (6026) [2021-11-25 18:31:15,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18902 states to 18902 states and 27263 transitions. [2021-11-25 18:31:15,315 INFO L78 Accepts]: Start accepts. Automaton has 18902 states and 27263 transitions. Word has length 513 [2021-11-25 18:31:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:31:15,316 INFO L470 AbstractCegarLoop]: Abstraction has 18902 states and 27263 transitions. [2021-11-25 18:31:15,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 18:31:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 18902 states and 27263 transitions. [2021-11-25 18:31:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2021-11-25 18:31:15,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:31:15,418 INFO L514 BasicCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:15,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:31:15,419 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 18:31:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:31:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash 696293390, now seen corresponding path program 1 times [2021-11-25 18:31:15,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:31:15,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113135852] [2021-11-25 18:31:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:31:15,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:31:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:31:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5672 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5652 trivial. 0 not checked. [2021-11-25 18:31:15,936 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:31:15,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113135852] [2021-11-25 18:31:15,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113135852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:31:15,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:31:15,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:31:15,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541672737] [2021-11-25 18:31:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:31:15,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:31:15,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:31:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:31:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:31:15,939 INFO L87 Difference]: Start difference. First operand 18902 states and 27263 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 18:31:19,579 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 18:31:21,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:31:25,192 WARN L534 Checker$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 18:31:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:31:25,836 INFO L93 Difference]: Finished difference Result 42909 states and 61915 transitions. [2021-11-25 18:31:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:31:25,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 547 [2021-11-25 18:31:25,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:31:25,967 INFO L225 Difference]: With dead ends: 42909 [2021-11-25 18:31:25,967 INFO L226 Difference]: Without dead ends: 25132 [2021-11-25 18:31:26,035 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 18:31:26,036 INFO L933 BasicCegarLoop]: 3794 mSDtfsCounter, 1597 mSDsluCounter, 2801 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:31:26,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 6187 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1193 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 18:31:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25132 states. [2021-11-25 18:31:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25132 to 25111. [2021-11-25 18:31:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25111 states, 15554 states have (on average 1.3128455702713129) internal successors, (20420), 15634 states have internal predecessors, (20420), 7776 states have call successors, (7776), 1781 states have call predecessors, (7776), 1779 states have return successors, (7969), 7701 states have call predecessors, (7969), 7773 states have call successors, (7969) [2021-11-25 18:31:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25111 states to 25111 states and 36165 transitions. [2021-11-25 18:31:27,466 INFO L78 Accepts]: Start accepts. Automaton has 25111 states and 36165 transitions. Word has length 547 [2021-11-25 18:31:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:31:27,467 INFO L470 AbstractCegarLoop]: Abstraction has 25111 states and 36165 transitions. [2021-11-25 18:31:27,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2021-11-25 18:31:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25111 states and 36165 transitions. [2021-11-25 18:31:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2021-11-25 18:31:27,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:31:27,553 INFO L514 BasicCegarLoop]: trace histogram [45, 36, 36, 36, 36, 36, 36, 26, 26, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:27,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:31:27,554 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 18:31:27,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:31:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash 665917242, now seen corresponding path program 1 times [2021-11-25 18:31:27,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:31:27,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970338517] [2021-11-25 18:31:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:31:27,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:31:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:31:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7242 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7221 trivial. 0 not checked. [2021-11-25 18:31:28,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:31:28,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970338517] [2021-11-25 18:31:28,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970338517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:31:28,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:31:28,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:31:28,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602477088] [2021-11-25 18:31:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:31:28,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:31:28,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:31:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:31:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:31:28,251 INFO L87 Difference]: Start difference. First operand 25111 states and 36165 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-25 18:31:32,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:31:36,476 WARN L534 Checker$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 18:31:37,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:31:37,516 INFO L93 Difference]: Finished difference Result 71719 states and 103611 transitions. [2021-11-25 18:31:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:31:37,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) Word has length 736 [2021-11-25 18:31:37,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:31:37,797 INFO L225 Difference]: With dead ends: 71719 [2021-11-25 18:31:37,798 INFO L226 Difference]: Without dead ends: 47733 [2021-11-25 18:31:37,922 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 18:31:37,923 INFO L933 BasicCegarLoop]: 4017 mSDtfsCounter, 2652 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 6473 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:31:37,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2659 Valid, 6473 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1148 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 18:31:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47733 states. [2021-11-25 18:31:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47733 to 47731. [2021-11-25 18:31:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47731 states, 29642 states have (on average 1.3112138182308886) internal successors, (38867), 29740 states have internal predecessors, (38867), 14748 states have call successors, (14748), 3341 states have call predecessors, (14748), 3339 states have return successors, (15284), 14661 states have call predecessors, (15284), 14745 states have call successors, (15284) [2021-11-25 18:31:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47731 states to 47731 states and 68899 transitions. [2021-11-25 18:31:40,545 INFO L78 Accepts]: Start accepts. Automaton has 47731 states and 68899 transitions. Word has length 736 [2021-11-25 18:31:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:31:40,547 INFO L470 AbstractCegarLoop]: Abstraction has 47731 states and 68899 transitions. [2021-11-25 18:31:40,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (77), 3 states have call predecessors, (77), 3 states have call successors, (77) [2021-11-25 18:31:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 47731 states and 68899 transitions. [2021-11-25 18:31:40,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2021-11-25 18:31:40,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:31:40,946 INFO L514 BasicCegarLoop]: trace histogram [46, 36, 36, 36, 36, 36, 36, 27, 27, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:40,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:31:40,946 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 18:31:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:31:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1481278689, now seen corresponding path program 1 times [2021-11-25 18:31:40,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:31:40,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700382897] [2021-11-25 18:31:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:31:40,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:31:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:31:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7447 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 7381 trivial. 0 not checked. [2021-11-25 18:31:41,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:31:41,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700382897] [2021-11-25 18:31:41,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700382897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:31:41,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:31:41,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:31:41,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595257598] [2021-11-25 18:31:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:31:41,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:31:41,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:31:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:31:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:31:41,808 INFO L87 Difference]: Start difference. First operand 47731 states and 68899 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-25 18:31:45,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:31:47,234 WARN L534 Checker$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 18:31:52,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:31:55,136 WARN L534 Checker$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 18:31:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:31:57,462 INFO L93 Difference]: Finished difference Result 110233 states and 158583 transitions. [2021-11-25 18:31:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:31:57,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) Word has length 756 [2021-11-25 18:31:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:31:57,761 INFO L225 Difference]: With dead ends: 110233 [2021-11-25 18:31:57,761 INFO L226 Difference]: Without dead ends: 63627 [2021-11-25 18:31:58,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:31:58,047 INFO L933 BasicCegarLoop]: 3973 mSDtfsCounter, 2389 mSDsluCounter, 3562 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 214 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 6882 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:31:58,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 6882 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2155 Invalid, 4 Unknown, 0 Unchecked, 13.7s Time] [2021-11-25 18:31:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63627 states. [2021-11-25 18:32:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63627 to 63606. [2021-11-25 18:32:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63606 states, 39535 states have (on average 1.3099532060199823) internal successors, (51789), 39664 states have internal predecessors, (51789), 19326 states have call successors, (19326), 4746 states have call predecessors, (19326), 4743 states have return successors, (20058), 19207 states have call predecessors, (20058), 19323 states have call successors, (20058) [2021-11-25 18:32:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63606 states to 63606 states and 91173 transitions. [2021-11-25 18:32:01,170 INFO L78 Accepts]: Start accepts. Automaton has 63606 states and 91173 transitions. Word has length 756 [2021-11-25 18:32:01,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:32:01,172 INFO L470 AbstractCegarLoop]: Abstraction has 63606 states and 91173 transitions. [2021-11-25 18:32:01,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 3 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (79), 3 states have call predecessors, (79), 3 states have call successors, (79) [2021-11-25 18:32:01,173 INFO L276 IsEmpty]: Start isEmpty. Operand 63606 states and 91173 transitions. [2021-11-25 18:32:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2021-11-25 18:32:01,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:01,365 INFO L514 BasicCegarLoop]: trace histogram [48, 36, 36, 36, 36, 36, 36, 28, 28, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:01,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:32:01,365 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 18:32:01,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash -78811623, now seen corresponding path program 1 times [2021-11-25 18:32:01,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:01,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192872509] [2021-11-25 18:32:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:01,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:32:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7764 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7678 trivial. 0 not checked. [2021-11-25 18:32:02,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:32:02,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192872509] [2021-11-25 18:32:02,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192872509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:32:02,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:32:02,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:32:02,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409374924] [2021-11-25 18:32:02,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:32:02,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:32:02,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:32:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:32:02,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:32:02,203 INFO L87 Difference]: Start difference. First operand 63606 states and 91173 transitions. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2021-11-25 18:32:05,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:32:10,850 WARN L534 Checker$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 18:32:13,408 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 18:32:15,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:32:15,901 INFO L93 Difference]: Finished difference Result 138263 states and 198263 transitions. [2021-11-25 18:32:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:32:15,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) Word has length 809 [2021-11-25 18:32:15,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:32:16,267 INFO L225 Difference]: With dead ends: 138263 [2021-11-25 18:32:16,268 INFO L226 Difference]: Without dead ends: 75782 [2021-11-25 18:32:16,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:32:16,680 INFO L933 BasicCegarLoop]: 3795 mSDtfsCounter, 1581 mSDsluCounter, 3725 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 6851 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:32:16,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 6851 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2139 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2021-11-25 18:32:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75782 states. [2021-11-25 18:32:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75782 to 75761. [2021-11-25 18:32:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75761 states, 47124 states have (on average 1.3108182667006196) internal successors, (61771), 47284 states have internal predecessors, (61771), 22932 states have call successors, (22932), 5707 states have call predecessors, (22932), 5703 states have return successors, (23888), 22781 states have call predecessors, (23888), 22929 states have call successors, (23888) [2021-11-25 18:32:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75761 states to 75761 states and 108591 transitions. [2021-11-25 18:32:20,150 INFO L78 Accepts]: Start accepts. Automaton has 75761 states and 108591 transitions. Word has length 809 [2021-11-25 18:32:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:32:20,152 INFO L470 AbstractCegarLoop]: Abstraction has 75761 states and 108591 transitions. [2021-11-25 18:32:20,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 3 states have call successors, (85), 2 states have call predecessors, (85), 1 states have return successors, (84), 3 states have call predecessors, (84), 3 states have call successors, (84) [2021-11-25 18:32:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 75761 states and 108591 transitions. [2021-11-25 18:32:20,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2021-11-25 18:32:20,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:20,674 INFO L514 BasicCegarLoop]: trace histogram [50, 36, 36, 36, 36, 36, 36, 29, 29, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:20,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:32:20,674 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 18:32:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash -151814824, now seen corresponding path program 1 times [2021-11-25 18:32:20,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:20,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421335975] [2021-11-25 18:32:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:20,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:32:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8090 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 7985 trivial. 0 not checked. [2021-11-25 18:32:21,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:32:21,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421335975] [2021-11-25 18:32:21,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421335975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:32:21,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:32:21,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:32:21,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045859045] [2021-11-25 18:32:21,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:32:21,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:32:21,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:32:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:32:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:32:21,298 INFO L87 Difference]: Start difference. First operand 75761 states and 108591 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-25 18:32:25,146 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 18:32:27,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:32:33,734 WARN L534 Checker$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 18:32:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:32:37,008 INFO L93 Difference]: Finished difference Result 162741 states and 233311 transitions. [2021-11-25 18:32:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:32:37,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) Word has length 831 [2021-11-25 18:32:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:32:37,439 INFO L225 Difference]: With dead ends: 162741 [2021-11-25 18:32:37,439 INFO L226 Difference]: Without dead ends: 88105 [2021-11-25 18:32:37,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:32:37,665 INFO L933 BasicCegarLoop]: 3783 mSDtfsCounter, 1631 mSDsluCounter, 6449 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 9194 SdHoareTripleChecker+Invalid, 2614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:32:37,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 9194 Invalid, 2614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2599 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2021-11-25 18:32:37,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88105 states. [2021-11-25 18:32:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88105 to 88084. [2021-11-25 18:32:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88084 states, 54821 states have (on average 1.310829791503256) internal successors, (71861), 55012 states have internal predecessors, (71861), 26574 states have call successors, (26574), 6692 states have call predecessors, (26574), 6687 states have return successors, (27726), 26391 states have call predecessors, (27726), 26571 states have call successors, (27726) [2021-11-25 18:32:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88084 states to 88084 states and 126161 transitions. [2021-11-25 18:32:41,778 INFO L78 Accepts]: Start accepts. Automaton has 88084 states and 126161 transitions. Word has length 831 [2021-11-25 18:32:41,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:32:41,780 INFO L470 AbstractCegarLoop]: Abstraction has 88084 states and 126161 transitions. [2021-11-25 18:32:41,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 3 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (86), 3 states have call predecessors, (86), 3 states have call successors, (86) [2021-11-25 18:32:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 88084 states and 126161 transitions. [2021-11-25 18:32:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2021-11-25 18:32:42,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:32:42,047 INFO L514 BasicCegarLoop]: trace histogram [52, 36, 36, 36, 36, 36, 36, 31, 31, 13, 11, 11, 11, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:32:42,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:32:42,048 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 18:32:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:32:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1567080737, now seen corresponding path program 1 times [2021-11-25 18:32:42,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:32:42,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475248886] [2021-11-25 18:32:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:32:42,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:32:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:32:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 8631 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 8502 trivial. 0 not checked. [2021-11-25 18:32:43,202 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:32:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475248886] [2021-11-25 18:32:43,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475248886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:32:43,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:32:43,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:32:43,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980441807] [2021-11-25 18:32:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:32:43,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:32:43,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:32:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:32:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:32:43,206 INFO L87 Difference]: Start difference. First operand 88084 states and 126161 transitions. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-11-25 18:32:47,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:32:49,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:32:55,984 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 18:33:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:33:00,429 INFO L93 Difference]: Finished difference Result 216648 states and 315507 transitions. [2021-11-25 18:33:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:33:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 873 [2021-11-25 18:33:00,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:33:01,334 INFO L225 Difference]: With dead ends: 216648 [2021-11-25 18:33:01,335 INFO L226 Difference]: Without dead ends: 129689 [2021-11-25 18:33:01,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:33:01,650 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 2812 mSDsluCounter, 8262 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 332 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3160 SdHoareTripleChecker+Valid, 11648 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:33:01,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3160 Valid, 11648 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2270 Invalid, 3 Unknown, 0 Unchecked, 12.6s Time] [2021-11-25 18:33:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129689 states. [2021-11-25 18:33:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129689 to 100299. [2021-11-25 18:33:05,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100299 states, 62434 states have (on average 1.311256687061537) internal successors, (81867), 62656 states have internal predecessors, (81867), 30204 states have call successors, (30204), 7665 states have call predecessors, (30204), 7659 states have return successors, (31552), 29989 states have call predecessors, (31552), 30201 states have call successors, (31552) [2021-11-25 18:33:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100299 states to 100299 states and 143623 transitions. [2021-11-25 18:33:06,832 INFO L78 Accepts]: Start accepts. Automaton has 100299 states and 143623 transitions. Word has length 873 [2021-11-25 18:33:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:33:06,834 INFO L470 AbstractCegarLoop]: Abstraction has 100299 states and 143623 transitions. [2021-11-25 18:33:06,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 3 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2021-11-25 18:33:06,834 INFO L276 IsEmpty]: Start isEmpty. Operand 100299 states and 143623 transitions.