./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:33:38,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:33:38,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:33:38,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:33:38,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:33:38,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:33:38,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:33:38,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:33:38,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:33:38,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:33:38,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:33:38,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:33:38,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:33:38,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:33:38,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:33:38,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:33:38,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:33:38,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:33:38,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:33:38,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:33:38,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:33:38,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:33:38,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:33:38,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:33:38,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:33:38,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:33:38,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:33:38,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:33:38,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:33:38,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:33:38,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:33:38,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:33:38,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:33:38,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:33:38,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:33:38,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:33:38,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:33:38,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:33:38,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:33:38,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:33:38,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:33:38,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:33:38,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:33:38,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:33:38,410 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:33:38,410 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:33:38,411 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:33:38,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:33:38,417 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:33:38,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:33:38,418 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:33:38,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:33:38,419 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:33:38,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:33:38,420 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:33:38,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:33:38,420 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:33:38,420 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:33:38,421 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:33:38,421 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:33:38,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:33:38,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:33:38,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:33:38,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:33:38,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:33:38,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:33:38,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:33:38,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:33:38,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:33:38,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:33:38,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:33:38,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:38,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:33:38,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:33:38,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:33:38,428 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:33:38,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:33:38,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:33:38,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:33:38,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:33:38,430 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3ed5a6aa0282e2dbd5967163bb1c33dc8964226641967602a6cd0884f5c00f9 [2021-11-21 01:33:38,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:33:38,709 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:33:38,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:33:38,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:33:38,714 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:33:38,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-21 01:33:38,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/data/c16829f7e/e750c410e3d446b6909d9a8f93645799/FLAG48b87f400 [2021-11-21 01:33:39,788 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:33:39,789 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-21 01:33:39,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/data/c16829f7e/e750c410e3d446b6909d9a8f93645799/FLAG48b87f400 [2021-11-21 01:33:40,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/data/c16829f7e/e750c410e3d446b6909d9a8f93645799 [2021-11-21 01:33:40,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:33:40,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:33:40,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:40,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:33:40,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:33:40,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:40" (1/1) ... [2021-11-21 01:33:40,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb3808d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:40, skipping insertion in model container [2021-11-21 01:33:40,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:33:40" (1/1) ... [2021-11-21 01:33:40,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:33:40,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:33:44,976 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2021-11-21 01:33:44,980 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2021-11-21 01:33:44,980 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2021-11-21 01:33:44,981 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2021-11-21 01:33:45,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:45,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:33:45,693 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416147,416160] [2021-11-21 01:33:45,694 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416294,416307] [2021-11-21 01:33:45,694 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416433,416446] [2021-11-21 01:33:45,695 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_57b69c34-15f9-48d5-bfcc-369da7ead0c0/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i[416591,416604] [2021-11-21 01:33:45,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:33:46,075 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:33:46,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46 WrapperNode [2021-11-21 01:33:46,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:33:46,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:46,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:33:46,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:33:46,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:46,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:46,639 INFO L137 Inliner]: procedures = 543, calls = 4106, calls flagged for inlining = 313, calls inlined = 291, statements flattened = 8482 [2021-11-21 01:33:46,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:33:46,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:33:46,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:33:46,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:33:46,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:46,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:46,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:46,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:47,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:47,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:47,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:47,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:33:47,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:33:47,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:33:47,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:33:47,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (1/1) ... [2021-11-21 01:33:47,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:33:47,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:33:47,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:33:47,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b69c34-15f9-48d5-bfcc-369da7ead0c0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:33:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2021-11-21 01:33:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2021-11-21 01:33:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:33:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:33:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-21 01:33:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-21 01:33:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:33:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:33:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure alx_halt [2021-11-21 01:33:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_halt [2021-11-21 01:33:47,423 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_txbuf [2021-11-21 01:33:47,423 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_txbuf [2021-11-21 01:33:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2021-11-21 01:33:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2021-11-21 01:33:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure alx_suspend [2021-11-21 01:33:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_suspend [2021-11-21 01:33:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_read_phy_reg [2021-11-21 01:33:47,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_read_phy_reg [2021-11-21 01:33:47,424 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:33:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:33:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_reg [2021-11-21 01:33:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_reg [2021-11-21 01:33:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:33:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:33:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 01:33:47,425 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 01:33:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure alx_pci_error_resume [2021-11-21 01:33:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_pci_error_resume [2021-11-21 01:33:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tx_timeout [2021-11-21 01:33:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tx_timeout [2021-11-21 01:33:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_enable [2021-11-21 01:33:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_enable [2021-11-21 01:33:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:33:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:33:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem16 [2021-11-21 01:33:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem16 [2021-11-21 01:33:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure alx_irq_disable [2021-11-21 01:33:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_irq_disable [2021-11-21 01:33:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:33:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:33:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:33:47,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:33:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:33:47,428 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:33:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:33:47,428 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:33:47,428 INFO L130 BoogieDeclarations]: Found specification of procedure alx_activate [2021-11-21 01:33:47,429 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_activate [2021-11-21 01:33:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure alx_remove [2021-11-21 01:33:47,429 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_remove [2021-11-21 01:33:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:33:47,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:33:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:33:47,429 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:33:47,429 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_msi [2021-11-21 01:33:47,430 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_msi [2021-11-21 01:33:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 01:33:47,430 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 01:33:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:33:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:33:47,430 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:33:47,430 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_write [2021-11-21 01:33:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_write [2021-11-21 01:33:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-21 01:33:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-21 01:33:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 01:33:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 01:33:47,431 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_reg [2021-11-21 01:33:47,431 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_reg [2021-11-21 01:33:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_unaligned_access_size [2021-11-21 01:33:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_ext [2021-11-21 01:33:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_ext [2021-11-21 01:33:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:33:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:33:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:33:47,432 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:33:47,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:33:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure ethadv_to_hw_cfg [2021-11-21 01:33:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ethadv_to_hw_cfg [2021-11-21 01:33:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure alx_stop [2021-11-21 01:33:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_stop [2021-11-21 01:33:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:33:47,433 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:33:47,433 INFO L130 BoogieDeclarations]: Found specification of procedure alx_resume [2021-11-21 01:33:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_resume [2021-11-21 01:33:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:33:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:33:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:33:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_link_check [2021-11-21 01:33:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_link_check [2021-11-21 01:33:47,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:33:47,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:33:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:33:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:33:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:33:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:33:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:33:47,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:33:47,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:33:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_open [2021-11-21 01:33:47,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_open [2021-11-21 01:33:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_core [2021-11-21 01:33:47,436 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_core [2021-11-21 01:33:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:33:47,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:33:47,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:33:47,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:33:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure alx_update_hw_stats [2021-11-21 01:33:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_update_hw_stats [2021-11-21 01:33:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_mem32 [2021-11-21 01:33:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_mem32 [2021-11-21 01:33:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:33:47,437 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:33:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:33:47,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:33:47,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:33:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:33:47,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:33:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:33:47,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:33:47,438 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_dbg [2021-11-21 01:33:47,438 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_dbg [2021-11-21 01:33:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-21 01:33:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-21 01:33:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure alx_netif_stop [2021-11-21 01:33:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_netif_stop [2021-11-21 01:33:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:33:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 01:33:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 01:33:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:33:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:33:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:33:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:33:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:33:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 01:33:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_giga [2021-11-21 01:33:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_giga [2021-11-21 01:33:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure alx_poll_controller [2021-11-21 01:33:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_poll_controller [2021-11-21 01:33:47,441 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_pcie [2021-11-21 01:33:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_pcie [2021-11-21 01:33:47,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:33:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:33:47,441 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:33:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:33:47,441 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2021-11-21 01:33:47,441 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2021-11-21 01:33:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure alx_schedule_reset [2021-11-21 01:33:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_schedule_reset [2021-11-21 01:33:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_legacy [2021-11-21 01:33:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_legacy [2021-11-21 01:33:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure alx_refill_rx_ring [2021-11-21 01:33:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_refill_rx_ring [2021-11-21 01:33:47,442 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_dbg [2021-11-21 01:33:47,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_dbg [2021-11-21 01:33:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 01:33:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 01:33:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 01:33:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 01:33:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:33:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:33:47,443 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_macaddr [2021-11-21 01:33:47,443 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_macaddr [2021-11-21 01:33:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:33:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:33:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-21 01:33:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-21 01:33:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure alx_speed_to_ethadv [2021-11-21 01:33:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_speed_to_ethadv [2021-11-21 01:33:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 01:33:47,444 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 01:33:47,444 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_rings [2021-11-21 01:33:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_rings [2021-11-21 01:33:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:33:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:33:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-21 01:33:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-21 01:33:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-21 01:33:47,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-21 01:33:47,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:33:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:33:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:33:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:33:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-21 01:33:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-21 01:33:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:33:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 01:33:47,446 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 01:33:47,446 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 01:33:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:33:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:33:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 01:33:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure alx_open [2021-11-21 01:33:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_open [2021-11-21 01:33:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-21 01:33:47,447 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-21 01:33:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 01:33:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 01:33:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_with_cr [2021-11-21 01:33:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_with_cr [2021-11-21 01:33:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:33:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:33:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-21 01:33:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-21 01:33:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure alx_get_supported_speeds [2021-11-21 01:33:47,449 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_get_supported_speeds [2021-11-21 01:33:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:33:47,449 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:33:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_macaddr [2021-11-21 01:33:47,449 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_macaddr [2021-11-21 01:33:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_mem32 [2021-11-21 01:33:47,449 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_mem32 [2021-11-21 01:33:47,449 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-21 01:33:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-21 01:33:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:33:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:33:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:33:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:33:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-21 01:33:47,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-21 01:33:47,450 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 01:33:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 01:33:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:33:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:33:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:33:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 01:33:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 01:33:47,451 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit_rings [2021-11-21 01:33:47,451 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit_rings [2021-11-21 01:33:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_reg [2021-11-21 01:33:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_reg [2021-11-21 01:33:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 01:33:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 01:33:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure alx_free_buffers [2021-11-21 01:33:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_free_buffers [2021-11-21 01:33:47,452 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:33:47,452 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:33:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-11-21 01:33:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-11-21 01:33:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:33:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:33:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure alx_wait_mdio_idle [2021-11-21 01:33:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_wait_mdio_idle [2021-11-21 01:33:47,453 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:33:47,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:33:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:33:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:33:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure alx_intr_handle [2021-11-21 01:33:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_intr_handle [2021-11-21 01:33:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 01:33:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 01:33:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 01:33:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 01:33:47,454 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 01:33:47,454 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 01:33:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:33:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:33:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 01:33:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 01:33:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:33:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:33:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 01:33:47,455 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 01:33:47,455 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_alx_driver_exit_15_2 [2021-11-21 01:33:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_alx_driver_exit_15_2 [2021-11-21 01:33:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:33:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:33:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:33:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:33:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure alx_is_rev_a [2021-11-21 01:33:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_is_rev_a [2021-11-21 01:33:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:33:47,456 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:33:47,456 INFO L130 BoogieDeclarations]: Found specification of procedure alx_read_phy_core [2021-11-21 01:33:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_read_phy_core [2021-11-21 01:33:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:33:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:33:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure alx_write_phy_ext [2021-11-21 01:33:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_write_phy_ext [2021-11-21 01:33:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:33:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:33:47,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:33:47,457 INFO L130 BoogieDeclarations]: Found specification of procedure alx_post_phy_link [2021-11-21 01:33:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_post_phy_link [2021-11-21 01:33:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:33:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:33:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reinit [2021-11-21 01:33:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reinit [2021-11-21 01:33:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure alx_tpd_avail [2021-11-21 01:33:47,458 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_tpd_avail [2021-11-21 01:33:47,458 INFO L130 BoogieDeclarations]: Found specification of procedure alx_setup_speed_duplex [2021-11-21 01:33:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_setup_speed_duplex [2021-11-21 01:33:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:33:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:33:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_stop [2021-11-21 01:33:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_stop [2021-11-21 01:33:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 01:33:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 01:33:47,459 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-21 01:33:47,459 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-21 01:33:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure alx_enable_aspm [2021-11-21 01:33:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_enable_aspm [2021-11-21 01:33:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure alx_set_rx_mode [2021-11-21 01:33:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_set_rx_mode [2021-11-21 01:33:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure alx_hw_revision [2021-11-21 01:33:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_hw_revision [2021-11-21 01:33:47,460 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_set_rx_mode [2021-11-21 01:33:47,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_set_rx_mode [2021-11-21 01:33:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure __alx_write_phy_reg [2021-11-21 01:33:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __alx_write_phy_reg [2021-11-21 01:33:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 01:33:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 01:33:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-21 01:33:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-21 01:33:47,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:33:47,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:33:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 01:33:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 01:33:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-21 01:33:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-21 01:33:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure alx_configure [2021-11-21 01:33:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_configure [2021-11-21 01:33:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_phy [2021-11-21 01:33:47,462 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_phy [2021-11-21 01:33:47,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-21 01:33:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-21 01:33:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:33:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:33:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-21 01:33:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-21 01:33:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:33:47,463 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:33:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:33:47,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:33:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:33:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le64 [2021-11-21 01:33:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le64 [2021-11-21 01:33:47,464 INFO L130 BoogieDeclarations]: Found specification of procedure alx_reset_mac [2021-11-21 01:33:47,464 INFO L138 BoogieDeclarations]: Found implementation of procedure alx_reset_mac [2021-11-21 01:33:48,558 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:33:48,563 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:33:48,735 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:34:02,370 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:34:02,628 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:34:05,205 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:34:05,205 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-21 01:34:05,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:05 BoogieIcfgContainer [2021-11-21 01:34:05,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:34:05,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:34:05,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:34:05,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:34:05,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:33:40" (1/3) ... [2021-11-21 01:34:05,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279a7673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:34:05, skipping insertion in model container [2021-11-21 01:34:05,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:33:46" (2/3) ... [2021-11-21 01:34:05,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279a7673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:34:05, skipping insertion in model container [2021-11-21 01:34:05,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:34:05" (3/3) ... [2021-11-21 01:34:05,227 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-atheros-alx-alx.cil.i [2021-11-21 01:34:05,237 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:34:05,237 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:34:05,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:34:05,344 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:34:05,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:34:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 2317 states, 1331 states have (on average 1.270473328324568) internal successors, (1691), 1376 states have internal predecessors, (1691), 828 states have call successors, (828), 160 states have call predecessors, (828), 159 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) [2021-11-21 01:34:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-21 01:34:05,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:05,476 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:05,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:05,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash 762660543, now seen corresponding path program 1 times [2021-11-21 01:34:05,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:05,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051880264] [2021-11-21 01:34:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:05,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-21 01:34:06,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:06,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051880264] [2021-11-21 01:34:06,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051880264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:06,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:06,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:06,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700162683] [2021-11-21 01:34:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:06,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:06,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:06,735 INFO L87 Difference]: Start difference. First operand has 2317 states, 1331 states have (on average 1.270473328324568) internal successors, (1691), 1376 states have internal predecessors, (1691), 828 states have call successors, (828), 160 states have call predecessors, (828), 159 states have return successors, (819), 804 states have call predecessors, (819), 819 states have call successors, (819) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 01:34:12,162 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:12,706 INFO L93 Difference]: Finished difference Result 6622 states and 9543 transitions. [2021-11-21 01:34:12,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:12,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2021-11-21 01:34:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:12,974 INFO L225 Difference]: With dead ends: 6622 [2021-11-21 01:34:12,975 INFO L226 Difference]: Without dead ends: 4325 [2021-11-21 01:34:13,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:13,013 INFO L933 BasicCegarLoop]: 3601 mSDtfsCounter, 2962 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 6442 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:13,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2962 Valid, 6442 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 837 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-21 01:34:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2021-11-21 01:34:13,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4322. [2021-11-21 01:34:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 2486 states have (on average 1.262670957361223) internal successors, (3139), 2563 states have internal predecessors, (3139), 1528 states have call successors, (1528), 307 states have call predecessors, (1528), 306 states have return successors, (1525), 1503 states have call predecessors, (1525), 1525 states have call successors, (1525) [2021-11-21 01:34:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 6192 transitions. [2021-11-21 01:34:13,607 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 6192 transitions. Word has length 180 [2021-11-21 01:34:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:13,613 INFO L470 AbstractCegarLoop]: Abstraction has 4322 states and 6192 transitions. [2021-11-21 01:34:13,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-21 01:34:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 6192 transitions. [2021-11-21 01:34:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-21 01:34:13,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:13,649 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:13,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:34:13,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:13,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1036555269, now seen corresponding path program 1 times [2021-11-21 01:34:13,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:13,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820025775] [2021-11-21 01:34:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:13,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-21 01:34:14,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:14,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820025775] [2021-11-21 01:34:14,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820025775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:14,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:14,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:14,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782667727] [2021-11-21 01:34:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:14,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:14,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:14,267 INFO L87 Difference]: Start difference. First operand 4322 states and 6192 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 01:34:18,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:21,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:21,404 INFO L93 Difference]: Finished difference Result 10321 states and 14749 transitions. [2021-11-21 01:34:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 199 [2021-11-21 01:34:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:21,468 INFO L225 Difference]: With dead ends: 10321 [2021-11-21 01:34:21,469 INFO L226 Difference]: Without dead ends: 6032 [2021-11-21 01:34:21,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:21,501 INFO L933 BasicCegarLoop]: 3507 mSDtfsCounter, 2666 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 6316 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:21,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2666 Valid, 6316 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 876 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-21 01:34:21,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6032 states. [2021-11-21 01:34:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6032 to 6023. [2021-11-21 01:34:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6023 states, 3479 states have (on average 1.2549583213567117) internal successors, (4366), 3584 states have internal predecessors, (4366), 2102 states have call successors, (2102), 442 states have call predecessors, (2102), 440 states have return successors, (2099), 2065 states have call predecessors, (2099), 2099 states have call successors, (2099) [2021-11-21 01:34:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6023 states to 6023 states and 8567 transitions. [2021-11-21 01:34:22,131 INFO L78 Accepts]: Start accepts. Automaton has 6023 states and 8567 transitions. Word has length 199 [2021-11-21 01:34:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 6023 states and 8567 transitions. [2021-11-21 01:34:22,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-21 01:34:22,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6023 states and 8567 transitions. [2021-11-21 01:34:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-21 01:34:22,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:22,146 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:22,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:34:22,147 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -38448032, now seen corresponding path program 1 times [2021-11-21 01:34:22,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:22,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31485655] [2021-11-21 01:34:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:22,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-21 01:34:22,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31485655] [2021-11-21 01:34:22,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31485655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:22,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:22,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:22,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065136668] [2021-11-21 01:34:22,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:22,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:22,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:22,604 INFO L87 Difference]: Start difference. First operand 6023 states and 8567 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:34:25,056 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:29,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:29,418 INFO L93 Difference]: Finished difference Result 17682 states and 25134 transitions. [2021-11-21 01:34:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:29,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 212 [2021-11-21 01:34:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:29,526 INFO L225 Difference]: With dead ends: 17682 [2021-11-21 01:34:29,526 INFO L226 Difference]: Without dead ends: 11692 [2021-11-21 01:34:29,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:29,571 INFO L933 BasicCegarLoop]: 3581 mSDtfsCounter, 2889 mSDsluCounter, 3222 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 6408 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:29,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 6408 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 01:34:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11692 states. [2021-11-21 01:34:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11692 to 11675. [2021-11-21 01:34:30,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11675 states, 6743 states have (on average 1.2516683968559987) internal successors, (8440), 6958 states have internal predecessors, (8440), 4067 states have call successors, (4067), 866 states have call predecessors, (4067), 863 states have return successors, (4064), 3986 states have call predecessors, (4064), 4064 states have call successors, (4064) [2021-11-21 01:34:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11675 states to 11675 states and 16571 transitions. [2021-11-21 01:34:30,510 INFO L78 Accepts]: Start accepts. Automaton has 11675 states and 16571 transitions. Word has length 212 [2021-11-21 01:34:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:30,511 INFO L470 AbstractCegarLoop]: Abstraction has 11675 states and 16571 transitions. [2021-11-21 01:34:30,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 01:34:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 11675 states and 16571 transitions. [2021-11-21 01:34:30,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-21 01:34:30,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:30,523 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:30,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:34:30,524 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1003485019, now seen corresponding path program 1 times [2021-11-21 01:34:30,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:30,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180363578] [2021-11-21 01:34:30,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:30,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2021-11-21 01:34:30,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:30,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180363578] [2021-11-21 01:34:30,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180363578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:30,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:30,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:34:30,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816812138] [2021-11-21 01:34:30,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:30,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:34:30,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:34:30,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:34:30,996 INFO L87 Difference]: Start difference. First operand 11675 states and 16571 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:34:33,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:36,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:38,659 INFO L93 Difference]: Finished difference Result 19539 states and 27745 transitions. [2021-11-21 01:34:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:34:38,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 222 [2021-11-21 01:34:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:38,785 INFO L225 Difference]: With dead ends: 19539 [2021-11-21 01:34:38,785 INFO L226 Difference]: Without dead ends: 19500 [2021-11-21 01:34:38,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:34:38,800 INFO L933 BasicCegarLoop]: 3589 mSDtfsCounter, 2983 mSDsluCounter, 7206 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2983 SdHoareTripleChecker+Valid, 9980 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:38,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2983 Valid, 9980 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1231 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-21 01:34:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19500 states. [2021-11-21 01:34:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19500 to 19497. [2021-11-21 01:34:40,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19497 states, 11261 states have (on average 1.2521090489299351) internal successors, (14100), 11616 states have internal predecessors, (14100), 6787 states have call successors, (6787), 1450 states have call predecessors, (6787), 1447 states have return successors, (6784), 6658 states have call predecessors, (6784), 6784 states have call successors, (6784) [2021-11-21 01:34:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19497 states to 19497 states and 27671 transitions. [2021-11-21 01:34:40,123 INFO L78 Accepts]: Start accepts. Automaton has 19497 states and 27671 transitions. Word has length 222 [2021-11-21 01:34:40,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:40,124 INFO L470 AbstractCegarLoop]: Abstraction has 19497 states and 27671 transitions. [2021-11-21 01:34:40,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-21 01:34:40,125 INFO L276 IsEmpty]: Start isEmpty. Operand 19497 states and 27671 transitions. [2021-11-21 01:34:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-21 01:34:40,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:40,153 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 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] [2021-11-21 01:34:40,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:34:40,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:40,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:40,154 INFO L85 PathProgramCache]: Analyzing trace with hash 542340728, now seen corresponding path program 1 times [2021-11-21 01:34:40,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:40,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349517671] [2021-11-21 01:34:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:40,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2021-11-21 01:34:40,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:40,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349517671] [2021-11-21 01:34:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349517671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:40,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:40,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:40,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063156416] [2021-11-21 01:34:40,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:40,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:40,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:40,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:40,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:40,524 INFO L87 Difference]: Start difference. First operand 19497 states and 27671 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-21 01:34:43,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:45,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:46,863 INFO L93 Difference]: Finished difference Result 41076 states and 57940 transitions. [2021-11-21 01:34:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 251 [2021-11-21 01:34:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:46,969 INFO L225 Difference]: With dead ends: 41076 [2021-11-21 01:34:46,969 INFO L226 Difference]: Without dead ends: 21612 [2021-11-21 01:34:47,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:47,068 INFO L933 BasicCegarLoop]: 3446 mSDtfsCounter, 2334 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 6228 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:47,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2334 Valid, 6228 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 873 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-21 01:34:47,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21612 states. [2021-11-21 01:34:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21612 to 21598. [2021-11-21 01:34:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21598 states, 12414 states have (on average 1.2464958917351376) internal successors, (15474), 12843 states have internal predecessors, (15474), 7392 states have call successors, (7392), 1799 states have call predecessors, (7392), 1790 states have return successors, (7395), 7209 states have call predecessors, (7395), 7389 states have call successors, (7395) [2021-11-21 01:34:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21598 states to 21598 states and 30261 transitions. [2021-11-21 01:34:48,550 INFO L78 Accepts]: Start accepts. Automaton has 21598 states and 30261 transitions. Word has length 251 [2021-11-21 01:34:48,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:48,551 INFO L470 AbstractCegarLoop]: Abstraction has 21598 states and 30261 transitions. [2021-11-21 01:34:48,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-21 01:34:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 21598 states and 30261 transitions. [2021-11-21 01:34:48,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-21 01:34:48,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:48,569 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:48,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:34:48,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:48,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash 910799087, now seen corresponding path program 1 times [2021-11-21 01:34:48,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:48,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077705957] [2021-11-21 01:34:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:48,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:34:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1133 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2021-11-21 01:34:48,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:34:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077705957] [2021-11-21 01:34:48,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077705957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:34:48,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:34:48,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:34:48,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652792332] [2021-11-21 01:34:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:34:48,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:34:48,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:34:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:34:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:48,959 INFO L87 Difference]: Start difference. First operand 21598 states and 30261 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 01:34:53,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:55,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:34:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:34:56,721 INFO L93 Difference]: Finished difference Result 51193 states and 71786 transitions. [2021-11-21 01:34:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:34:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 246 [2021-11-21 01:34:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:34:57,002 INFO L225 Difference]: With dead ends: 51193 [2021-11-21 01:34:57,003 INFO L226 Difference]: Without dead ends: 31001 [2021-11-21 01:34:57,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:34:57,077 INFO L933 BasicCegarLoop]: 5102 mSDtfsCounter, 2656 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 7909 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:34:57,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2656 Valid, 7909 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1185 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2021-11-21 01:34:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31001 states. [2021-11-21 01:34:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31001 to 30983. [2021-11-21 01:34:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30983 states, 17824 states have (on average 1.2446140035906643) internal successors, (22184), 18439 states have internal predecessors, (22184), 10578 states have call successors, (10578), 2594 states have call predecessors, (10578), 2579 states have return successors, (10583), 10309 states have call predecessors, (10583), 10575 states have call successors, (10583) [2021-11-21 01:34:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30983 states to 30983 states and 43345 transitions. [2021-11-21 01:34:59,524 INFO L78 Accepts]: Start accepts. Automaton has 30983 states and 43345 transitions. Word has length 246 [2021-11-21 01:34:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:34:59,539 INFO L470 AbstractCegarLoop]: Abstraction has 30983 states and 43345 transitions. [2021-11-21 01:34:59,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 01:34:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 30983 states and 43345 transitions. [2021-11-21 01:34:59,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-21 01:34:59,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:34:59,594 INFO L514 BasicCegarLoop]: trace histogram [21, 16, 16, 16, 16, 16, 16, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:34:59,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:34:59,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:34:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:34:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 963305559, now seen corresponding path program 1 times [2021-11-21 01:34:59,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:34:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135063879] [2021-11-21 01:34:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:34:59,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:34:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2021-11-21 01:35:00,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135063879] [2021-11-21 01:35:00,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135063879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:00,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:00,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:35:00,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304675716] [2021-11-21 01:35:00,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:00,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:35:00,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:00,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:35:00,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:00,137 INFO L87 Difference]: Start difference. First operand 30983 states and 43345 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-21 01:35:05,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:07,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:10,242 INFO L93 Difference]: Finished difference Result 75007 states and 105019 transitions. [2021-11-21 01:35:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:35:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 269 [2021-11-21 01:35:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:10,545 INFO L225 Difference]: With dead ends: 75007 [2021-11-21 01:35:10,546 INFO L226 Difference]: Without dead ends: 45430 [2021-11-21 01:35:10,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:35:10,704 INFO L933 BasicCegarLoop]: 5381 mSDtfsCounter, 2893 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2893 SdHoareTripleChecker+Valid, 8206 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:10,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2893 Valid, 8206 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1221 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 01:35:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45430 states. [2021-11-21 01:35:13,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45430 to 45402. [2021-11-21 01:35:13,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45402 states, 26109 states have (on average 1.2436324639013367) internal successors, (32470), 27026 states have internal predecessors, (32470), 15507 states have call successors, (15507), 3806 states have call predecessors, (15507), 3784 states have return successors, (15516), 15100 states have call predecessors, (15516), 15504 states have call successors, (15516) [2021-11-21 01:35:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45402 states to 45402 states and 63493 transitions. [2021-11-21 01:35:13,798 INFO L78 Accepts]: Start accepts. Automaton has 45402 states and 63493 transitions. Word has length 269 [2021-11-21 01:35:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:13,799 INFO L470 AbstractCegarLoop]: Abstraction has 45402 states and 63493 transitions. [2021-11-21 01:35:13,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-21 01:35:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 45402 states and 63493 transitions. [2021-11-21 01:35:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-21 01:35:13,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:13,856 INFO L514 BasicCegarLoop]: trace histogram [23, 16, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:13,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:35:13,857 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1720682148, now seen corresponding path program 1 times [2021-11-21 01:35:13,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:13,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609634133] [2021-11-21 01:35:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:13,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2021-11-21 01:35:14,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:14,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609634133] [2021-11-21 01:35:14,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609634133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:14,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:14,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:14,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251938764] [2021-11-21 01:35:14,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:14,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:14,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:14,719 INFO L87 Difference]: Start difference. First operand 45402 states and 63493 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:35:18,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:21,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:23,089 INFO L93 Difference]: Finished difference Result 45435 states and 63528 transitions. [2021-11-21 01:35:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:35:23,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 294 [2021-11-21 01:35:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:23,279 INFO L225 Difference]: With dead ends: 45435 [2021-11-21 01:35:23,279 INFO L226 Difference]: Without dead ends: 45433 [2021-11-21 01:35:23,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:23,300 INFO L933 BasicCegarLoop]: 3429 mSDtfsCounter, 2280 mSDsluCounter, 7046 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 9661 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:23,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 9661 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1229 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 01:35:23,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45433 states. [2021-11-21 01:35:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45433 to 45402. [2021-11-21 01:35:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45402 states, 26109 states have (on average 1.243440959056264) internal successors, (32465), 27026 states have internal predecessors, (32465), 15507 states have call successors, (15507), 3806 states have call predecessors, (15507), 3784 states have return successors, (15516), 15100 states have call predecessors, (15516), 15504 states have call successors, (15516) [2021-11-21 01:35:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45402 states to 45402 states and 63488 transitions. [2021-11-21 01:35:26,148 INFO L78 Accepts]: Start accepts. Automaton has 45402 states and 63488 transitions. Word has length 294 [2021-11-21 01:35:26,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:26,149 INFO L470 AbstractCegarLoop]: Abstraction has 45402 states and 63488 transitions. [2021-11-21 01:35:26,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 01:35:26,150 INFO L276 IsEmpty]: Start isEmpty. Operand 45402 states and 63488 transitions. [2021-11-21 01:35:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-21 01:35:26,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:26,267 INFO L514 BasicCegarLoop]: trace histogram [25, 18, 18, 18, 18, 18, 18, 11, 11, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:26,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:35:26,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1063988195, now seen corresponding path program 1 times [2021-11-21 01:35:26,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:26,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475315240] [2021-11-21 01:35:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:26,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1735 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2021-11-21 01:35:27,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475315240] [2021-11-21 01:35:27,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475315240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:27,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:27,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:35:27,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119436137] [2021-11-21 01:35:27,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:35:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:35:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:35:27,076 INFO L87 Difference]: Start difference. First operand 45402 states and 63488 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 01:35:31,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:34,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:35,040 INFO L93 Difference]: Finished difference Result 45432 states and 63521 transitions. [2021-11-21 01:35:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:35:35,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 432 [2021-11-21 01:35:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:35,214 INFO L225 Difference]: With dead ends: 45432 [2021-11-21 01:35:35,214 INFO L226 Difference]: Without dead ends: 45430 [2021-11-21 01:35:35,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:35:35,236 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 3121 mSDsluCounter, 3256 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3121 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:35,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3121 Valid, 5698 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 819 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 01:35:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45430 states. [2021-11-21 01:35:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45430 to 45400. [2021-11-21 01:35:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45400 states, 26108 states have (on average 1.2430672590776772) internal successors, (32454), 27024 states have internal predecessors, (32454), 15507 states have call successors, (15507), 3806 states have call predecessors, (15507), 3784 states have return successors, (15516), 15100 states have call predecessors, (15516), 15504 states have call successors, (15516) [2021-11-21 01:35:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45400 states to 45400 states and 63477 transitions. [2021-11-21 01:35:37,161 INFO L78 Accepts]: Start accepts. Automaton has 45400 states and 63477 transitions. Word has length 432 [2021-11-21 01:35:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:35:37,162 INFO L470 AbstractCegarLoop]: Abstraction has 45400 states and 63477 transitions. [2021-11-21 01:35:37,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 01:35:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 45400 states and 63477 transitions. [2021-11-21 01:35:37,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-21 01:35:37,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:35:37,219 INFO L514 BasicCegarLoop]: trace histogram [27, 18, 18, 18, 18, 18, 18, 13, 13, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:35:37,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:35:37,219 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:35:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:35:37,220 INFO L85 PathProgramCache]: Analyzing trace with hash -420963125, now seen corresponding path program 1 times [2021-11-21 01:35:37,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:35:37,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640536247] [2021-11-21 01:35:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:35:37,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:35:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:35:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2021-11-21 01:35:38,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:35:38,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640536247] [2021-11-21 01:35:38,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640536247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:35:38,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:35:38,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:35:38,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881194925] [2021-11-21 01:35:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:35:38,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:35:38,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:35:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:35:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:35:38,119 INFO L87 Difference]: Start difference. First operand 45400 states and 63477 transitions. Second operand has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 7 states have internal predecessors, (143), 4 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 3 states have call predecessors, (65), 4 states have call successors, (65) [2021-11-21 01:35:45,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:48,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:49,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:53,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:55,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:57,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:35:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:35:58,286 INFO L93 Difference]: Finished difference Result 100162 states and 142101 transitions. [2021-11-21 01:35:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:35:58,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 7 states have internal predecessors, (143), 4 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 3 states have call predecessors, (65), 4 states have call successors, (65) Word has length 469 [2021-11-21 01:35:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:35:58,599 INFO L225 Difference]: With dead ends: 100162 [2021-11-21 01:35:58,599 INFO L226 Difference]: Without dead ends: 56156 [2021-11-21 01:35:58,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:35:58,753 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 1845 mSDsluCounter, 18286 mSDsCounter, 0 mSdLazyCounter, 2848 mSolverCounterSat, 702 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 19535 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 2848 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:35:58,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1863 Valid, 19535 Invalid, 3554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 2848 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2021-11-21 01:35:58,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56156 states. [2021-11-21 01:36:02,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56156 to 45408. [2021-11-21 01:36:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45408 states, 26112 states have (on average 1.2428002450980393) internal successors, (32452), 27032 states have internal predecessors, (32452), 15508 states have call successors, (15508), 3806 states have call predecessors, (15508), 3787 states have return successors, (15521), 15100 states have call predecessors, (15521), 15505 states have call successors, (15521) [2021-11-21 01:36:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45408 states to 45408 states and 63481 transitions. [2021-11-21 01:36:02,340 INFO L78 Accepts]: Start accepts. Automaton has 45408 states and 63481 transitions. Word has length 469 [2021-11-21 01:36:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:02,341 INFO L470 AbstractCegarLoop]: Abstraction has 45408 states and 63481 transitions. [2021-11-21 01:36:02,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 23.833333333333332) internal successors, (143), 7 states have internal predecessors, (143), 4 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 3 states have call predecessors, (65), 4 states have call successors, (65) [2021-11-21 01:36:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 45408 states and 63481 transitions. [2021-11-21 01:36:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-11-21 01:36:02,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:02,419 INFO L514 BasicCegarLoop]: trace histogram [27, 18, 18, 18, 18, 18, 18, 13, 13, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:02,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:36:02,420 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1061030228, now seen corresponding path program 1 times [2021-11-21 01:36:02,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:02,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903629043] [2021-11-21 01:36:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:02,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1926 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2021-11-21 01:36:02,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:02,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903629043] [2021-11-21 01:36:02,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903629043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:02,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:02,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:02,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967696962] [2021-11-21 01:36:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:02,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:02,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:02,887 INFO L87 Difference]: Start difference. First operand 45408 states and 63481 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:36:09,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:10,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:13,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:18,435 INFO L93 Difference]: Finished difference Result 75853 states and 106316 transitions. [2021-11-21 01:36:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:36:18,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 471 [2021-11-21 01:36:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:18,838 INFO L225 Difference]: With dead ends: 75853 [2021-11-21 01:36:18,838 INFO L226 Difference]: Without dead ends: 75708 [2021-11-21 01:36:18,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:36:18,885 INFO L933 BasicCegarLoop]: 3589 mSDtfsCounter, 3023 mSDsluCounter, 9687 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3023 SdHoareTripleChecker+Valid, 12051 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:18,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3023 Valid, 12051 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3157 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2021-11-21 01:36:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75708 states. [2021-11-21 01:36:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75708 to 75673. [2021-11-21 01:36:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75673 states, 43566 states have (on average 1.2437221686636368) internal successors, (54184), 45070 states have internal predecessors, (54184), 25879 states have call successors, (25879), 6251 states have call predecessors, (25879), 6227 states have return successors, (25914), 25239 states have call predecessors, (25914), 25876 states have call successors, (25914) [2021-11-21 01:36:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75673 states to 75673 states and 105977 transitions. [2021-11-21 01:36:22,428 INFO L78 Accepts]: Start accepts. Automaton has 75673 states and 105977 transitions. Word has length 471 [2021-11-21 01:36:22,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:22,430 INFO L470 AbstractCegarLoop]: Abstraction has 75673 states and 105977 transitions. [2021-11-21 01:36:22,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-21 01:36:22,430 INFO L276 IsEmpty]: Start isEmpty. Operand 75673 states and 105977 transitions. [2021-11-21 01:36:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2021-11-21 01:36:23,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:23,183 INFO L514 BasicCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 14, 14, 11, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:23,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:36:23,184 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:23,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:23,184 INFO L85 PathProgramCache]: Analyzing trace with hash -193073588, now seen corresponding path program 1 times [2021-11-21 01:36:23,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:23,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200589413] [2021-11-21 01:36:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:23,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2437 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2421 trivial. 0 not checked. [2021-11-21 01:36:23,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:23,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200589413] [2021-11-21 01:36:23,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200589413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:23,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:23,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:36:23,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445490349] [2021-11-21 01:36:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:23,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:36:23,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:36:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:36:23,869 INFO L87 Difference]: Start difference. First operand 75673 states and 105977 transitions. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 01:36:27,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:32,474 INFO L93 Difference]: Finished difference Result 151663 states and 216160 transitions. [2021-11-21 01:36:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:36:32,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 739 [2021-11-21 01:36:32,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:32,830 INFO L225 Difference]: With dead ends: 151663 [2021-11-21 01:36:32,830 INFO L226 Difference]: Without dead ends: 76041 [2021-11-21 01:36:33,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:36:33,101 INFO L933 BasicCegarLoop]: 2850 mSDtfsCounter, 5 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5696 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:33,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 5696 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 821 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 01:36:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76041 states. [2021-11-21 01:36:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76041 to 75719. [2021-11-21 01:36:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75719 states, 43612 states have (on average 1.2434651013482527) internal successors, (54230), 45116 states have internal predecessors, (54230), 25879 states have call successors, (25879), 6251 states have call predecessors, (25879), 6227 states have return successors, (25914), 25239 states have call predecessors, (25914), 25876 states have call successors, (25914) [2021-11-21 01:36:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75719 states to 75719 states and 106023 transitions. [2021-11-21 01:36:36,938 INFO L78 Accepts]: Start accepts. Automaton has 75719 states and 106023 transitions. Word has length 739 [2021-11-21 01:36:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:36:36,940 INFO L470 AbstractCegarLoop]: Abstraction has 75719 states and 106023 transitions. [2021-11-21 01:36:36,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2021-11-21 01:36:36,940 INFO L276 IsEmpty]: Start isEmpty. Operand 75719 states and 106023 transitions. [2021-11-21 01:36:37,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2021-11-21 01:36:37,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:36:37,167 INFO L514 BasicCegarLoop]: trace histogram [28, 18, 18, 18, 18, 18, 18, 14, 14, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:36:37,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:36:37,168 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:36:37,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:36:37,169 INFO L85 PathProgramCache]: Analyzing trace with hash 931707533, now seen corresponding path program 1 times [2021-11-21 01:36:37,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:36:37,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887842138] [2021-11-21 01:36:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:36:37,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:36:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:36:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2497 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2021-11-21 01:36:38,217 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:36:38,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887842138] [2021-11-21 01:36:38,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887842138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:36:38,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:36:38,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:36:38,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490219596] [2021-11-21 01:36:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:36:38,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:36:38,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:36:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:36:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:38,220 INFO L87 Difference]: Start difference. First operand 75719 states and 106023 transitions. Second operand has 5 states, 5 states have (on average 47.6) internal successors, (238), 4 states have internal predecessors, (238), 2 states have call successors, (119), 2 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 2 states have call successors, (118) [2021-11-21 01:36:42,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:45,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:36:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:36:49,768 INFO L93 Difference]: Finished difference Result 151663 states and 214451 transitions. [2021-11-21 01:36:49,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:36:49,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.6) internal successors, (238), 4 states have internal predecessors, (238), 2 states have call successors, (119), 2 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 2 states have call successors, (118) Word has length 748 [2021-11-21 01:36:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:36:50,180 INFO L225 Difference]: With dead ends: 151663 [2021-11-21 01:36:50,180 INFO L226 Difference]: Without dead ends: 75995 [2021-11-21 01:36:50,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:36:50,430 INFO L933 BasicCegarLoop]: 2851 mSDtfsCounter, 3 mSDsluCounter, 9770 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11398 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:36:50,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 11398 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1640 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 01:36:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75995 states.