./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/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_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 03:50:46,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:50:46,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:50:46,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:50:46,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:50:46,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:50:46,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:50:46,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:50:46,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:50:46,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:50:46,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:50:46,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:50:46,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:50:46,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:50:46,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:50:46,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:50:46,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:50:46,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:50:46,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:50:46,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:50:46,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:50:46,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:50:46,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:50:46,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:50:46,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:50:46,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:50:46,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:50:46,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:50:46,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:50:46,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:50:46,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:50:46,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:50:46,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:50:46,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:50:46,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:50:46,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:50:46,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:50:46,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:50:46,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:50:46,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:50:46,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:50:46,537 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:50:46,581 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:50:46,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:50:46,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:50:46,582 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:50:46,583 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:50:46,583 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:50:46,583 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:50:46,583 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:50:46,583 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:50:46,584 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:50:46,585 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:50:46,585 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:50:46,585 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:50:46,585 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:50:46,585 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:50:46,586 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:50:46,586 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:50:46,586 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:50:46,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:50:46,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:50:46,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:50:46,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:50:46,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:50:46,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:50:46,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:50:46,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:50:46,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:50:46,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:50:46,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:50:46,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:46,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:50:46,589 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:50:46,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:50:46,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:50:46,590 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:50:46,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:50:46,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:50:46,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:50:46,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760ec64c2425d439883c5d1074b52af06ed0343ac750305f469404408ecd0aa4 [2022-11-03 03:50:46,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:50:46,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:50:46,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:50:46,893 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:50:46,895 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:50:46,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2022-11-03 03:50:46,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/data/9753471bc/5863376031f14e119bf21bed5777319d/FLAG4eafe6809 [2022-11-03 03:50:48,072 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:50:48,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2022-11-03 03:50:48,134 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/data/9753471bc/5863376031f14e119bf21bed5777319d/FLAG4eafe6809 [2022-11-03 03:50:48,334 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/data/9753471bc/5863376031f14e119bf21bed5777319d [2022-11-03 03:50:48,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:50:48,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:50:48,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:48,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:50:48,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:50:48,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:48" (1/1) ... [2022-11-03 03:50:48,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25496f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:48, skipping insertion in model container [2022-11-03 03:50:48,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:48" (1/1) ... [2022-11-03 03:50:48,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:50:48,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:50:52,184 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2022-11-03 03:50:52,187 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2022-11-03 03:50:52,188 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2022-11-03 03:50:52,189 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2022-11-03 03:50:52,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:52,290 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:50:52,781 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464274,464287] [2022-11-03 03:50:52,781 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464421,464434] [2022-11-03 03:50:52,782 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464560,464573] [2022-11-03 03:50:52,782 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_655abef2-58e0-4038-af20-17a258e9489e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i[464718,464731] [2022-11-03 03:50:52,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:53,025 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:50:53,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53 WrapperNode [2022-11-03 03:50:53,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:53,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:53,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:50:53,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:50:53,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,540 INFO L138 Inliner]: procedures = 396, calls = 4490, calls flagged for inlining = 219, calls inlined = 198, statements flattened = 8918 [2022-11-03 03:50:53,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:53,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:50:53,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:50:53,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:50:53,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,955 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:53,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:54,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:50:54,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:50:54,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:50:54,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:50:54,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (1/1) ... [2022-11-03 03:50:54,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:54,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:54,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:50:54,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_655abef2-58e0-4038-af20-17a258e9489e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:50:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_reset [2022-11-03 03:50:54,097 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_reset [2022-11-03 03:50:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2022-11-03 03:50:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2022-11-03 03:50:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_stop [2022-11-03 03:50:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_stop [2022-11-03 03:50:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_config_parameter_str [2022-11-03 03:50:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_config_parameter_str [2022-11-03 03:50:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:50:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:50:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_inform_bss [2022-11-03 03:50:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_inform_bss [2022-11-03 03:50:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_pause_rx [2022-11-03 03:50:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_pause_rx [2022-11-03 03:50:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:50:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:50:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_tx_fixup [2022-11-03 03:50:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_tx_fixup [2022-11-03 03:50:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_bind [2022-11-03 03:50:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_bind [2022-11-03 03:50:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_set_multicast_list [2022-11-03 03:50:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_set_multicast_list [2022-11-03 03:50:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_purge_paused_rxq [2022-11-03 03:50:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_purge_paused_rxq [2022-11-03 03:50:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_unbind [2022-11-03 03:50:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_unbind [2022-11-03 03:50:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure set_encr_mode [2022-11-03 03:50:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure set_encr_mode [2022-11-03 03:50:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure get_rndis_wlan_priv [2022-11-03 03:50:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rndis_wlan_priv [2022-11-03 03:50:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:50:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:50:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-11-03 03:50:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-11-03 03:50:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:50:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:50:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:50:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:50:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:50:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure set_infra_mode [2022-11-03 03:50:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure set_infra_mode [2022-11-03 03:50:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_command [2022-11-03 03:50:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_command [2022-11-03 03:50:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_scan_done [2022-11-03 03:50:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_scan_done [2022-11-03 03:50:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 03:50:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 03:50:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 03:50:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 03:50:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_fill_station_info [2022-11-03 03:50:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_fill_station_info [2022-11-03 03:50:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure unknown_early_init [2022-11-03 03:50:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure unknown_early_init [2022-11-03 03:50:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure disassociate [2022-11-03 03:50:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure disassociate [2022-11-03 03:50:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-03 03:50:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-03 03:50:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:50:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_query_oid [2022-11-03 03:50:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_query_oid [2022-11-03 03:50:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-03 03:50:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-03 03:50:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:50:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:50:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:50:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-03 03:50:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-03 03:50:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_free [2022-11-03 03:50:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_free [2022-11-03 03:50:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:50:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure is_wpa_key [2022-11-03 03:50:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure is_wpa_key [2022-11-03 03:50:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:50:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:50:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:50:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:50:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_priv [2022-11-03 03:50:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_priv [2022-11-03 03:50:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_check_bssid_list [2022-11-03 03:50:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_check_bssid_list [2022-11-03 03:50:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure __toupper [2022-11-03 03:50:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __toupper [2022-11-03 03:50:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:50:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320b_early_init [2022-11-03 03:50:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320b_early_init [2022-11-03 03:50:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure set_channel [2022-11-03 03:50:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure set_channel [2022-11-03 03:50:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:50:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:50:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_status [2022-11-03 03:50:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_status [2022-11-03 03:50:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 03:50:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 03:50:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:50:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure level_to_qual [2022-11-03 03:50:54,183 INFO L138 BoogieDeclarations]: Found implementation of procedure level_to_qual [2022-11-03 03:50:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:50:54,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:50:54,184 INFO L130 BoogieDeclarations]: Found specification of procedure set_essid [2022-11-03 03:50:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure set_essid [2022-11-03 03:50:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:50:54,185 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_put_bss [2022-11-03 03:50:54,185 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_put_bss [2022-11-03 03:50:54,186 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_start_bssid_list_scan [2022-11-03 03:50:54,186 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_start_bssid_list_scan [2022-11-03 03:50:54,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:50:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 03:50:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-11-03 03:50:54,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-11-03 03:50:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_copy_module_params [2022-11-03 03:50:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_copy_module_params [2022-11-03 03:50:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 03:50:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 03:50:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure set_auth_mode [2022-11-03 03:50:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure set_auth_mode [2022-11-03 03:50:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2022-11-03 03:50:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2022-11-03 03:50:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 03:50:54,197 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 03:50:54,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:50:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:50:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 03:50:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 03:50:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 03:50:54,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 03:50:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:50:54,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:50:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:50:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:50:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-03 03:50:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rndis_wlan_driver_exit_11_2 [2022-11-03 03:50:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-03 03:50:54,199 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-03 03:50:54,199 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_cipher_to_alg [2022-11-03 03:50:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_cipher_to_alg [2022-11-03 03:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 03:50:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 03:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_channel [2022-11-03 03:50:54,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_channel [2022-11-03 03:50:54,200 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-03 03:50:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-03 03:50:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure add_wep_key [2022-11-03 03:50:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wep_key [2022-11-03 03:50:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-11-03 03:50:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-11-03 03:50:54,201 INFO L130 BoogieDeclarations]: Found specification of procedure is_broadcast_ether_addr [2022-11-03 03:50:54,201 INFO L138 BoogieDeclarations]: Found implementation of procedure is_broadcast_ether_addr [2022-11-03 03:50:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 03:50:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 03:50:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure set_bssid [2022-11-03 03:50:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bssid [2022-11-03 03:50:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:50:54,202 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:50:54,202 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 03:50:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 03:50:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 03:50:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 03:50:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:50:54,203 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 03:50:54,203 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 03:50:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bssid [2022-11-03 03:50:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bssid [2022-11-03 03:50:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:50:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure set_device_pmkids [2022-11-03 03:50:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure set_device_pmkids [2022-11-03 03:50:54,204 INFO L130 BoogieDeclarations]: Found specification of procedure get_device_pmkids [2022-11-03 03:50:54,204 INFO L138 BoogieDeclarations]: Found implementation of procedure get_device_pmkids [2022-11-03 03:50:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure netif_addr_unlock_bh [2022-11-03 03:50:54,205 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_addr_unlock_bh [2022-11-03 03:50:54,205 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 03:50:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 03:50:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:50:54,206 INFO L130 BoogieDeclarations]: Found specification of procedure next_bssid_list_item [2022-11-03 03:50:54,206 INFO L138 BoogieDeclarations]: Found implementation of procedure next_bssid_list_item [2022-11-03 03:50:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 03:50:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 03:50:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure set_priv_filter [2022-11-03 03:50:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure set_priv_filter [2022-11-03 03:50:54,207 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 03:50:54,207 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 03:50:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:50:54,208 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:50:54,208 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_wiphy_params [2022-11-03 03:50:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_wiphy_params [2022-11-03 03:50:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:50:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:50:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 03:50:54,209 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 03:50:54,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_7_4 [2022-11-03 03:50:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_7_4 [2022-11-03 03:50:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2022-11-03 03:50:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2022-11-03 03:50:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 03:50:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 03:50:54,210 INFO L130 BoogieDeclarations]: Found specification of procedure oid_to_string [2022-11-03 03:50:54,210 INFO L138 BoogieDeclarations]: Found implementation of procedure oid_to_string [2022-11-03 03:50:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-03 03:50:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-03 03:50:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure deauthenticate [2022-11-03 03:50:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure deauthenticate [2022-11-03 03:50:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 03:50:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 03:50:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure bcm4320a_early_init [2022-11-03 03:50:54,212 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm4320a_early_init [2022-11-03 03:50:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure cfg80211_michael_mic_failure [2022-11-03 03:50:54,213 INFO L138 BoogieDeclarations]: Found implementation of procedure cfg80211_michael_mic_failure [2022-11-03 03:50:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure set_default_iw_params [2022-11-03 03:50:54,214 INFO L138 BoogieDeclarations]: Found implementation of procedure set_default_iw_params [2022-11-03 03:50:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:50:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_error_status [2022-11-03 03:50:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_error_status [2022-11-03 03:50:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:50:54,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:50:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume_rx [2022-11-03 03:50:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume_rx [2022-11-03 03:50:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_equal [2022-11-03 03:50:54,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_equal [2022-11-03 03:50:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 03:50:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 03:50:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure get_bcm4320_power_dbm [2022-11-03 03:50:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bcm4320_power_dbm [2022-11-03 03:50:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:50:54,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:50:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-03 03:50:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-03 03:50:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_rx_fixup [2022-11-03 03:50:54,219 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_rx_fixup [2022-11-03 03:50:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_set_oid [2022-11-03 03:50:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_set_oid [2022-11-03 03:50:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure rndis_wlan_indication [2022-11-03 03:50:54,220 INFO L138 BoogieDeclarations]: Found implementation of procedure rndis_wlan_indication [2022-11-03 03:50:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure get_bssid [2022-11-03 03:50:54,225 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bssid [2022-11-03 03:50:54,225 INFO L130 BoogieDeclarations]: Found specification of procedure is_associated [2022-11-03 03:50:54,225 INFO L138 BoogieDeclarations]: Found implementation of procedure is_associated [2022-11-03 03:50:54,225 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2022-11-03 03:50:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:50:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-11-03 03:50:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-11-03 03:50:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure debug_print_pmkids [2022-11-03 03:50:54,226 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_print_pmkids [2022-11-03 03:50:54,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:50:54,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:50:55,581 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:50:55,588 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:50:56,197 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:51:16,862 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:51:17,297 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:51:19,009 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:51:19,009 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:51:19,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:19 BoogieIcfgContainer [2022-11-03 03:51:19,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:51:19,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:51:19,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:51:19,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:51:19,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:48" (1/3) ... [2022-11-03 03:51:19,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1cff31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:19, skipping insertion in model container [2022-11-03 03:51:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:53" (2/3) ... [2022-11-03 03:51:19,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1cff31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:19, skipping insertion in model container [2022-11-03 03:51:19,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:19" (3/3) ... [2022-11-03 03:51:19,027 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-wireless-rndis_wlan.cil.i [2022-11-03 03:51:19,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:51:19,048 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 03:51:19,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:51:19,140 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c7a67d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:51:19,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 03:51:19,150 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) [2022-11-03 03:51:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-11-03 03:51:19,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:19,202 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:51:19,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1795498274, now seen corresponding path program 1 times [2022-11-03 03:51:19,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:19,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051034892] [2022-11-03 03:51:19,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:19,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:20,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5115 trivial. 0 not checked. [2022-11-03 03:51:20,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:20,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051034892] [2022-11-03 03:51:20,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051034892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:20,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:20,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182287754] [2022-11-03 03:51:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:20,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:20,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:20,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:20,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:20,748 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) [2022-11-03 03:51:24,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:26,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:28,595 INFO L93 Difference]: Finished difference Result 5818 states and 8563 transitions. [2022-11-03 03:51:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:28,597 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 [2022-11-03 03:51:28,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:28,646 INFO L225 Difference]: With dead ends: 5818 [2022-11-03 03:51:28,646 INFO L226 Difference]: Without dead ends: 3865 [2022-11-03 03:51:28,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:28,664 INFO L413 NwaCegarLoop]: 3165 mSDtfsCounter, 2754 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s 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, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:28,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2761 Valid, 5624 Invalid, 928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 913 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 03:51:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-11-03 03:51:29,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2022-11-03 03:51:29,109 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) [2022-11-03 03:51:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 5650 transitions. [2022-11-03 03:51:29,145 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 5650 transitions. Word has length 384 [2022-11-03 03:51:29,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:29,151 INFO L495 AbstractCegarLoop]: Abstraction has 3863 states and 5650 transitions. [2022-11-03 03:51:29,152 INFO L496 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) [2022-11-03 03:51:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 5650 transitions. [2022-11-03 03:51:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 03:51:29,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:29,177 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:51:29,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:51:29,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1026032585, now seen corresponding path program 1 times [2022-11-03 03:51:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:29,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440801863] [2022-11-03 03:51:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2022-11-03 03:51:30,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:30,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440801863] [2022-11-03 03:51:30,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440801863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:30,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:30,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:30,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064117135] [2022-11-03 03:51:30,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:30,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:30,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:30,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:30,114 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) [2022-11-03 03:51:34,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:36,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:38,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:40,138 INFO L93 Difference]: Finished difference Result 11261 states and 16477 transitions. [2022-11-03 03:51:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:51:40,139 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 [2022-11-03 03:51:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:40,207 INFO L225 Difference]: With dead ends: 11261 [2022-11-03 03:51:40,208 INFO L226 Difference]: Without dead ends: 7471 [2022-11-03 03:51:40,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:40,235 INFO L413 NwaCegarLoop]: 3143 mSDtfsCounter, 2640 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 5602 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:40,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 5602 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 907 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2022-11-03 03:51:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2022-11-03 03:51:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7460. [2022-11-03 03:51:40,915 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, (2462), 2427 states have call predecessors, (2462), 2434 states have call successors, (2462) [2022-11-03 03:51:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 10904 transitions. [2022-11-03 03:51:40,983 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 10904 transitions. Word has length 438 [2022-11-03 03:51:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:40,986 INFO L495 AbstractCegarLoop]: Abstraction has 7460 states and 10904 transitions. [2022-11-03 03:51:40,987 INFO L496 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) [2022-11-03 03:51:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 10904 transitions. [2022-11-03 03:51:41,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-11-03 03:51:41,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:41,017 INFO L195 NwaCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 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] [2022-11-03 03:51:41,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:51:41,018 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1485067836, now seen corresponding path program 1 times [2022-11-03 03:51:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:41,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053843997] [2022-11-03 03:51:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:41,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:42,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5374 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2022-11-03 03:51:42,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053843997] [2022-11-03 03:51:42,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053843997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:42,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:42,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:51:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841432100] [2022-11-03 03:51:42,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:42,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:51:42,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:42,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:51:42,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:51:42,723 INFO L87 Difference]: Start difference. First operand 7460 states and 10904 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) [2022-11-03 03:51:47,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:50,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:52,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:51:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:51:54,122 INFO L93 Difference]: Finished difference Result 11324 states and 16538 transitions. [2022-11-03 03:51:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:51:54,123 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 431 [2022-11-03 03:51:54,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:51:54,205 INFO L225 Difference]: With dead ends: 11324 [2022-11-03 03:51:54,205 INFO L226 Difference]: Without dead ends: 11299 [2022-11-03 03:51:54,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:51:54,216 INFO L413 NwaCegarLoop]: 3210 mSDtfsCounter, 2809 mSDsluCounter, 6466 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s 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, 10.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:51:54,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2816 Valid, 8793 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1342 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2022-11-03 03:51:54,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11299 states. [2022-11-03 03:51:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11299 to 11297. [2022-11-03 03:51:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11297 states, 6952 states have (on average 1.3102704257767548) internal successors, (9109), 6971 states have internal predecessors, (9109), 3671 states have call successors, (3671), 672 states have call predecessors, (3671), 672 states have return successors, (3717), 3659 states have call predecessors, (3717), 3668 states have call successors, (3717) [2022-11-03 03:51:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11297 states to 11297 states and 16497 transitions. [2022-11-03 03:51:54,901 INFO L78 Accepts]: Start accepts. Automaton has 11297 states and 16497 transitions. Word has length 431 [2022-11-03 03:51:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:51:54,902 INFO L495 AbstractCegarLoop]: Abstraction has 11297 states and 16497 transitions. [2022-11-03 03:51:54,903 INFO L496 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) [2022-11-03 03:51:54,903 INFO L276 IsEmpty]: Start isEmpty. Operand 11297 states and 16497 transitions. [2022-11-03 03:51:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2022-11-03 03:51:54,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:51:54,934 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:51:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:51:54,934 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:51:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:51:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1074018903, now seen corresponding path program 1 times [2022-11-03 03:51:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:51:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712756027] [2022-11-03 03:51:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:51:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:51:55,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5287 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5276 trivial. 0 not checked. [2022-11-03 03:51:55,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:51:55,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712756027] [2022-11-03 03:51:55,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712756027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:51:55,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:51:55,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:51:55,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301452398] [2022-11-03 03:51:55,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:51:55,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:51:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:51:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:51:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:51:55,576 INFO L87 Difference]: Start difference. First operand 11297 states and 16497 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) [2022-11-03 03:51:58,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:02,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:04,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:05,469 INFO L93 Difference]: Finished difference Result 24424 states and 35623 transitions. [2022-11-03 03:52:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:05,470 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 [2022-11-03 03:52:05,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:05,568 INFO L225 Difference]: With dead ends: 24424 [2022-11-03 03:52:05,569 INFO L226 Difference]: Without dead ends: 13200 [2022-11-03 03:52:05,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:05,647 INFO L413 NwaCegarLoop]: 3184 mSDtfsCounter, 2642 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2649 SdHoareTripleChecker+Valid, 5661 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:05,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2649 Valid, 5661 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 03:52:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13200 states. [2022-11-03 03:52:06,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13200 to 13189. [2022-11-03 03:52:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13189 states, 8115 states have (on average 1.3086876155268021) internal successors, (10620), 8139 states have internal predecessors, (10620), 4270 states have call successors, (4270), 803 states have call predecessors, (4270), 802 states have return successors, (4323), 4253 states have call predecessors, (4323), 4267 states have call successors, (4323) [2022-11-03 03:52:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13189 states to 13189 states and 19213 transitions. [2022-11-03 03:52:06,423 INFO L78 Accepts]: Start accepts. Automaton has 13189 states and 19213 transitions. Word has length 460 [2022-11-03 03:52:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:06,426 INFO L495 AbstractCegarLoop]: Abstraction has 13189 states and 19213 transitions. [2022-11-03 03:52:06,426 INFO L496 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) [2022-11-03 03:52:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 13189 states and 19213 transitions. [2022-11-03 03:52:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-03 03:52:06,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:06,487 INFO L195 NwaCegarLoop]: 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, 1] [2022-11-03 03:52:06,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:52:06,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:06,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2145369054, now seen corresponding path program 1 times [2022-11-03 03:52:06,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:06,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090693903] [2022-11-03 03:52:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:06,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5277 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5274 trivial. 0 not checked. [2022-11-03 03:52:07,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:07,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090693903] [2022-11-03 03:52:07,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090693903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:07,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:07,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:07,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839635386] [2022-11-03 03:52:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:07,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:07,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:07,191 INFO L87 Difference]: Start difference. First operand 13189 states and 19213 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (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) [2022-11-03 03:52:10,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:12,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:15,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:16,702 INFO L93 Difference]: Finished difference Result 31734 states and 46075 transitions. [2022-11-03 03:52:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:16,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (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 479 [2022-11-03 03:52:16,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:16,826 INFO L225 Difference]: With dead ends: 31734 [2022-11-03 03:52:16,826 INFO L226 Difference]: Without dead ends: 18618 [2022-11-03 03:52:16,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:16,900 INFO L413 NwaCegarLoop]: 2959 mSDtfsCounter, 1567 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 5384 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:16,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 5384 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 950 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2022-11-03 03:52:16,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18618 states. [2022-11-03 03:52:17,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18618 to 18594. [2022-11-03 03:52:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18594 states, 11499 states have (on average 1.3116792764588225) internal successors, (15083), 11549 states have internal predecessors, (15083), 5844 states have call successors, (5844), 1251 states have call predecessors, (5844), 1249 states have return successors, (5953), 5799 states have call predecessors, (5953), 5841 states have call successors, (5953) [2022-11-03 03:52:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18594 states to 18594 states and 26880 transitions. [2022-11-03 03:52:18,062 INFO L78 Accepts]: Start accepts. Automaton has 18594 states and 26880 transitions. Word has length 479 [2022-11-03 03:52:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:18,063 INFO L495 AbstractCegarLoop]: Abstraction has 18594 states and 26880 transitions. [2022-11-03 03:52:18,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (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) [2022-11-03 03:52:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 18594 states and 26880 transitions. [2022-11-03 03:52:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-11-03 03:52:18,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:18,118 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:52:18,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:52:18,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:18,119 INFO L85 PathProgramCache]: Analyzing trace with hash -500108068, now seen corresponding path program 1 times [2022-11-03 03:52:18,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689736487] [2022-11-03 03:52:18,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:18,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5629 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5629 trivial. 0 not checked. [2022-11-03 03:52:19,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:19,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689736487] [2022-11-03 03:52:19,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689736487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:19,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:19,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:52:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545629746] [2022-11-03 03:52:19,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:19,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:52:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:19,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:52:19,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:52:19,804 INFO L87 Difference]: Start difference. First operand 18594 states and 26880 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) [2022-11-03 03:52:23,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:25,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:28,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:33,686 INFO L93 Difference]: Finished difference Result 26230 states and 39171 transitions. [2022-11-03 03:52:33,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:52:33,687 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 [2022-11-03 03:52:33,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:33,854 INFO L225 Difference]: With dead ends: 26230 [2022-11-03 03:52:33,854 INFO L226 Difference]: Without dead ends: 26228 [2022-11-03 03:52:33,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:52:33,874 INFO L413 NwaCegarLoop]: 4472 mSDtfsCounter, 4786 mSDsluCounter, 8315 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 367 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 11687 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:33,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5164 Valid, 11687 Invalid, 2516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [367 Valid, 2146 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2022-11-03 03:52:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26228 states. [2022-11-03 03:52:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26228 to 18594. [2022-11-03 03:52:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18594 states, 11499 states have (on average 1.3115053482911558) internal successors, (15081), 11549 states have internal predecessors, (15081), 5844 states have call successors, (5844), 1251 states have call predecessors, (5844), 1249 states have return successors, (5953), 5799 states have call predecessors, (5953), 5841 states have call successors, (5953) [2022-11-03 03:52:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18594 states to 18594 states and 26878 transitions. [2022-11-03 03:52:35,305 INFO L78 Accepts]: Start accepts. Automaton has 18594 states and 26878 transitions. Word has length 513 [2022-11-03 03:52:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:35,306 INFO L495 AbstractCegarLoop]: Abstraction has 18594 states and 26878 transitions. [2022-11-03 03:52:35,306 INFO L496 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) [2022-11-03 03:52:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 18594 states and 26878 transitions. [2022-11-03 03:52:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-11-03 03:52:35,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:35,380 INFO L195 NwaCegarLoop]: trace histogram [43, 36, 36, 36, 36, 36, 36, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:52:35,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:52:35,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:35,381 INFO L85 PathProgramCache]: Analyzing trace with hash -868495507, now seen corresponding path program 1 times [2022-11-03 03:52:35,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:35,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812399299] [2022-11-03 03:52:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:35,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5670 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 5652 trivial. 0 not checked. [2022-11-03 03:52:36,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:36,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812399299] [2022-11-03 03:52:36,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812399299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:36,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:36,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:36,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874731428] [2022-11-03 03:52:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:36,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:36,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:36,022 INFO L87 Difference]: Start difference. First operand 18594 states and 26878 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-11-03 03:52:40,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:42,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:46,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:52:46,797 INFO L93 Difference]: Finished difference Result 42291 states and 61155 transitions. [2022-11-03 03:52:46,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:52:46,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 546 [2022-11-03 03:52:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:52:46,934 INFO L225 Difference]: With dead ends: 42291 [2022-11-03 03:52:46,934 INFO L226 Difference]: Without dead ends: 24824 [2022-11-03 03:52:47,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:47,020 INFO L413 NwaCegarLoop]: 3794 mSDtfsCounter, 1598 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 6187 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:52:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 6187 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1195 Invalid, 3 Unknown, 0 Unchecked, 9.7s Time] [2022-11-03 03:52:47,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24824 states. [2022-11-03 03:52:48,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24824 to 24803. [2022-11-03 03:52:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24803 states, 15364 states have (on average 1.3130695131476178) internal successors, (20174), 15441 states have internal predecessors, (20174), 7710 states have call successors, (7710), 1730 states have call predecessors, (7710), 1727 states have return successors, (7910), 7637 states have call predecessors, (7910), 7707 states have call successors, (7910) [2022-11-03 03:52:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24803 states to 24803 states and 35794 transitions. [2022-11-03 03:52:48,619 INFO L78 Accepts]: Start accepts. Automaton has 24803 states and 35794 transitions. Word has length 546 [2022-11-03 03:52:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:52:48,621 INFO L495 AbstractCegarLoop]: Abstraction has 24803 states and 35794 transitions. [2022-11-03 03:52:48,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2022-11-03 03:52:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 24803 states and 35794 transitions. [2022-11-03 03:52:48,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2022-11-03 03:52:48,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:52:48,692 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:52:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:52:48,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:52:48,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:52:48,693 INFO L85 PathProgramCache]: Analyzing trace with hash 665917242, now seen corresponding path program 1 times [2022-11-03 03:52:48,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:52:48,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132672441] [2022-11-03 03:52:48,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:52:48,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:52:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:52:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7242 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7221 trivial. 0 not checked. [2022-11-03 03:52:50,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:52:50,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132672441] [2022-11-03 03:52:50,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132672441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:52:50,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:52:50,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:52:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239887971] [2022-11-03 03:52:50,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:52:50,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:52:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:52:50,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:52:50,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:52:50,226 INFO L87 Difference]: Start difference. First operand 24803 states and 35794 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) [2022-11-03 03:52:54,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:52:56,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:00,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:01,546 INFO L93 Difference]: Finished difference Result 71101 states and 102802 transitions. [2022-11-03 03:53:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:01,547 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 [2022-11-03 03:53:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:01,848 INFO L225 Difference]: With dead ends: 71101 [2022-11-03 03:53:01,848 INFO L226 Difference]: Without dead ends: 47425 [2022-11-03 03:53:02,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:02,002 INFO L413 NwaCegarLoop]: 4019 mSDtfsCounter, 2652 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:02,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2659 Valid, 6475 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1147 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2022-11-03 03:53:02,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47425 states. [2022-11-03 03:53:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47425 to 47423. [2022-11-03 03:53:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47423 states, 29452 states have (on average 1.3113201140839332) internal successors, (38621), 29547 states have internal predecessors, (38621), 14682 states have call successors, (14682), 3290 states have call predecessors, (14682), 3287 states have return successors, (15162), 14597 states have call predecessors, (15162), 14679 states have call successors, (15162) [2022-11-03 03:53:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47423 states to 47423 states and 68465 transitions. [2022-11-03 03:53:05,239 INFO L78 Accepts]: Start accepts. Automaton has 47423 states and 68465 transitions. Word has length 736 [2022-11-03 03:53:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:05,241 INFO L495 AbstractCegarLoop]: Abstraction has 47423 states and 68465 transitions. [2022-11-03 03:53:05,241 INFO L496 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) [2022-11-03 03:53:05,241 INFO L276 IsEmpty]: Start isEmpty. Operand 47423 states and 68465 transitions. [2022-11-03 03:53:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2022-11-03 03:53:05,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:05,386 INFO L195 NwaCegarLoop]: 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:05,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:53:05,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:05,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:05,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1354381764, now seen corresponding path program 1 times [2022-11-03 03:53:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:05,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659962374] [2022-11-03 03:53:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7444 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 7380 trivial. 0 not checked. [2022-11-03 03:53:06,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:06,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659962374] [2022-11-03 03:53:06,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659962374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:06,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:06,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366789942] [2022-11-03 03:53:06,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:06,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:06,849 INFO L87 Difference]: Start difference. First operand 47423 states and 68465 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) [2022-11-03 03:53:10,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:12,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:17,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:21,252 INFO L93 Difference]: Finished difference Result 109615 states and 157669 transitions. [2022-11-03 03:53:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:53:21,252 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 755 [2022-11-03 03:53:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:21,521 INFO L225 Difference]: With dead ends: 109615 [2022-11-03 03:53:21,521 INFO L226 Difference]: Without dead ends: 63319 [2022-11-03 03:53:21,660 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:53:21,661 INFO L413 NwaCegarLoop]: 3991 mSDtfsCounter, 2389 mSDsluCounter, 3561 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 214 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 6900 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:21,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 6900 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2161 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-11-03 03:53:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63319 states. [2022-11-03 03:53:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63319 to 63298. [2022-11-03 03:53:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63298 states, 39345 states have (on average 1.3100266869996187) internal successors, (51543), 39471 states have internal predecessors, (51543), 19260 states have call successors, (19260), 4695 states have call predecessors, (19260), 4691 states have return successors, (19894), 19143 states have call predecessors, (19894), 19257 states have call successors, (19894) [2022-11-03 03:53:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63298 states to 63298 states and 90697 transitions. [2022-11-03 03:53:24,923 INFO L78 Accepts]: Start accepts. Automaton has 63298 states and 90697 transitions. Word has length 755 [2022-11-03 03:53:24,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:24,925 INFO L495 AbstractCegarLoop]: Abstraction has 63298 states and 90697 transitions. [2022-11-03 03:53:24,925 INFO L496 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) [2022-11-03 03:53:24,925 INFO L276 IsEmpty]: Start isEmpty. Operand 63298 states and 90697 transitions. [2022-11-03 03:53:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2022-11-03 03:53:25,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:25,085 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:53:25,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:53:25,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash -78811623, now seen corresponding path program 1 times [2022-11-03 03:53:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489623264] [2022-11-03 03:53:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:25,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7764 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 7678 trivial. 0 not checked. [2022-11-03 03:53:26,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:26,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489623264] [2022-11-03 03:53:26,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489623264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:26,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:26,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274933685] [2022-11-03 03:53:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:26,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:26,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:26,584 INFO L87 Difference]: Start difference. First operand 63298 states and 90697 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) [2022-11-03 03:53:30,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:32,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:38,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:42,123 INFO L93 Difference]: Finished difference Result 137645 states and 197237 transitions. [2022-11-03 03:53:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:53:42,124 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 [2022-11-03 03:53:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:42,476 INFO L225 Difference]: With dead ends: 137645 [2022-11-03 03:53:42,476 INFO L226 Difference]: Without dead ends: 75474 [2022-11-03 03:53:42,821 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:53:42,822 INFO L413 NwaCegarLoop]: 3795 mSDtfsCounter, 1579 mSDsluCounter, 6548 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 9268 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:42,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 9268 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2627 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2022-11-03 03:53:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75474 states. [2022-11-03 03:53:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75474 to 75453. [2022-11-03 03:53:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75453 states, 46934 states have (on average 1.3108833681339753) internal successors, (61525), 47091 states have internal predecessors, (61525), 22866 states have call successors, (22866), 5656 states have call predecessors, (22866), 5651 states have return successors, (23654), 22717 states have call predecessors, (23654), 22863 states have call successors, (23654) [2022-11-03 03:53:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75453 states to 75453 states and 108045 transitions. [2022-11-03 03:53:46,898 INFO L78 Accepts]: Start accepts. Automaton has 75453 states and 108045 transitions. Word has length 809 [2022-11-03 03:53:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:46,909 INFO L495 AbstractCegarLoop]: Abstraction has 75453 states and 108045 transitions. [2022-11-03 03:53:46,910 INFO L496 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) [2022-11-03 03:53:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 75453 states and 108045 transitions. [2022-11-03 03:53:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2022-11-03 03:53:47,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:47,079 INFO L195 NwaCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:53:47,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:47,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1450043165, now seen corresponding path program 1 times [2022-11-03 03:53:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:47,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149786389] [2022-11-03 03:53:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:47,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8087 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 7984 trivial. 0 not checked. [2022-11-03 03:53:48,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149786389] [2022-11-03 03:53:48,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149786389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:48,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:48,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:48,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843600439] [2022-11-03 03:53:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:48,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:48,495 INFO L87 Difference]: Start difference. First operand 75453 states and 108045 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) [2022-11-03 03:53:52,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:53:54,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:01,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:05,218 INFO L93 Difference]: Finished difference Result 162123 states and 232173 transitions. [2022-11-03 03:54:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:54:05,219 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 830 [2022-11-03 03:54:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:05,847 INFO L225 Difference]: With dead ends: 162123 [2022-11-03 03:54:05,847 INFO L226 Difference]: Without dead ends: 87797 [2022-11-03 03:54:06,080 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:54:06,081 INFO L413 NwaCegarLoop]: 3799 mSDtfsCounter, 1631 mSDsluCounter, 6467 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 12 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 9226 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:06,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 9226 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2603 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2022-11-03 03:54:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87797 states. [2022-11-03 03:54:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87797 to 87776. [2022-11-03 03:54:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87776 states, 54631 states have (on average 1.3108857608317621) internal successors, (71615), 54819 states have internal predecessors, (71615), 26508 states have call successors, (26508), 6641 states have call predecessors, (26508), 6635 states have return successors, (27450), 26327 states have call predecessors, (27450), 26505 states have call successors, (27450) [2022-11-03 03:54:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87776 states to 87776 states and 125573 transitions. [2022-11-03 03:54:10,698 INFO L78 Accepts]: Start accepts. Automaton has 87776 states and 125573 transitions. Word has length 830 [2022-11-03 03:54:10,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:10,699 INFO L495 AbstractCegarLoop]: Abstraction has 87776 states and 125573 transitions. [2022-11-03 03:54:10,699 INFO L496 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) [2022-11-03 03:54:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand 87776 states and 125573 transitions. [2022-11-03 03:54:10,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2022-11-03 03:54:10,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:10,992 INFO L195 NwaCegarLoop]: 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] [2022-11-03 03:54:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:54:10,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1567080737, now seen corresponding path program 1 times [2022-11-03 03:54:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475056084] [2022-11-03 03:54:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:10,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8631 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 8502 trivial. 0 not checked. [2022-11-03 03:54:12,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:12,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475056084] [2022-11-03 03:54:12,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475056084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:12,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:12,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:12,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260804490] [2022-11-03 03:54:12,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:54:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:54:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:54:12,677 INFO L87 Difference]: Start difference. First operand 87776 states and 125573 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) [2022-11-03 03:54:16,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:23,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:27,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:54:31,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:31,286 INFO L93 Difference]: Finished difference Result 216030 states and 314285 transitions. [2022-11-03 03:54:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:31,287 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 [2022-11-03 03:54:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:32,013 INFO L225 Difference]: With dead ends: 216030 [2022-11-03 03:54:32,013 INFO L226 Difference]: Without dead ends: 129381 [2022-11-03 03:54:32,595 INFO L412 NwaCegarLoop]: 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 [2022-11-03 03:54:32,596 INFO L413 NwaCegarLoop]: 4526 mSDtfsCounter, 2812 mSDsluCounter, 8265 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 332 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3160 SdHoareTripleChecker+Valid, 11651 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:32,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3160 Valid, 11651 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2276 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2022-11-03 03:54:32,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129381 states.