./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/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 c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:47:52,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:47:52,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:47:52,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:47:52,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:47:52,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:47:52,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:47:52,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:47:52,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:47:52,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:47:52,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:47:52,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:47:52,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:47:52,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:47:52,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:47:52,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:47:52,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:47:52,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:47:52,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:47:52,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:47:52,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:47:52,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:47:52,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:47:52,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:47:52,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:47:52,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:47:52,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:47:52,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:47:52,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:47:52,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:47:52,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:47:52,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:47:52,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:47:52,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:47:52,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:47:52,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:47:52,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:47:52,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:47:52,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:47:52,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:47:52,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:47:52,505 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:47:52,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:47:52,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:47:52,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:47:52,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:47:52,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:47:52,561 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:47:52,562 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:47:52,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:47:52,562 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:47:52,563 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:47:52,564 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:47:52,564 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:47:52,565 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:47:52,565 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:47:52,565 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:47:52,566 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:47:52,566 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:47:52,566 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:47:52,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:47:52,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:47:52,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:47:52,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:47:52,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:47:52,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:47:52,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:47:52,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:47:52,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:47:52,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:47:52,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:47:52,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:47:52,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:47:52,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:47:52,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:47:52,575 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:47:52,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:47:52,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:47:52,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:47:52,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:47:52,576 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c [2021-11-20 23:47:52,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:47:52,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:47:52,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:47:52,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:47:52,932 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:47:52,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2021-11-20 23:47:53,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/data/3250a8c8b/929a68752f824f3d8fb518669ec4330b/FLAGc2c2c14e7 [2021-11-20 23:47:53,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:47:53,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2021-11-20 23:47:53,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/data/3250a8c8b/929a68752f824f3d8fb518669ec4330b/FLAGc2c2c14e7 [2021-11-20 23:47:54,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/data/3250a8c8b/929a68752f824f3d8fb518669ec4330b [2021-11-20 23:47:54,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:47:54,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:47:54,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:47:54,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:47:54,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:47:54,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:54" (1/1) ... [2021-11-20 23:47:54,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1755c5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:54, skipping insertion in model container [2021-11-20 23:47:54,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:54" (1/1) ... [2021-11-20 23:47:54,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:47:54,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:47:57,111 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2021-11-20 23:47:57,114 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2021-11-20 23:47:57,115 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2021-11-20 23:47:57,116 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2021-11-20 23:47:57,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:47:57,225 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:47:57,673 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2021-11-20 23:47:57,673 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2021-11-20 23:47:57,674 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2021-11-20 23:47:57,674 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_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2021-11-20 23:47:57,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:47:57,888 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:47:57,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57 WrapperNode [2021-11-20 23:47:57,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:47:57,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:47:57,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:47:57,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:47:57,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,214 INFO L137 Inliner]: procedures = 311, calls = 3006, calls flagged for inlining = 171, calls inlined = 158, statements flattened = 5219 [2021-11-20 23:47:58,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:47:58,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:47:58,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:47:58,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:47:58,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:47:58,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:47:58,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:47:58,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:47:58,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (1/1) ... [2021-11-20 23:47:58,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:47:58,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:47:58,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:47:58,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:47:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2021-11-20 23:47:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2021-11-20 23:47:58,677 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-20 23:47:58,677 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-20 23:47:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-20 23:47:58,678 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-20 23:47:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:47:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:47:58,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:47:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:47:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:47:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:47:58,679 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2021-11-20 23:47:58,679 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2021-11-20 23:47:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-20 23:47:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-20 23:47:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:47:58,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:47:58,680 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-20 23:47:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-20 23:47:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2021-11-20 23:47:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2021-11-20 23:47:58,681 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-20 23:47:58,681 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-20 23:47:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-20 23:47:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2021-11-20 23:47:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2021-11-20 23:47:58,682 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2021-11-20 23:47:58,682 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:47:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:47:58,683 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2021-11-20 23:47:58,683 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2021-11-20 23:47:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:47:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:47:58,684 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-20 23:47:58,684 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-20 23:47:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:47:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2021-11-20 23:47:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2021-11-20 23:47:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:47:58,685 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:47:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:47:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2021-11-20 23:47:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2021-11-20 23:47:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:47:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:47:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:47:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:47:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:47:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:47:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:47:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:47:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2021-11-20 23:47:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2021-11-20 23:47:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:47:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:47:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 23:47:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 23:47:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2021-11-20 23:47:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2021-11-20 23:47:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:47:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:47:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2021-11-20 23:47:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2021-11-20 23:47:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-20 23:47:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-20 23:47:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:47:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:47:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2021-11-20 23:47:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2021-11-20 23:47:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:47:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:47:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2021-11-20 23:47:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2021-11-20 23:47:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-20 23:47:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-20 23:47:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:47:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-11-20 23:47:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-11-20 23:47:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:47:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2021-11-20 23:47:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2021-11-20 23:47:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:47:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:47:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:47:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:47:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:47:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:47:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:47:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2021-11-20 23:47:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2021-11-20 23:47:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:47:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:47:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2021-11-20 23:47:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2021-11-20 23:47:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2021-11-20 23:47:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2021-11-20 23:47:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-20 23:47:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-20 23:47:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:47:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:47:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:47:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:47:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-20 23:47:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-20 23:47:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2021-11-20 23:47:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2021-11-20 23:47:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:47:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:47:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:47:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:47:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:47:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2021-11-20 23:47:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2021-11-20 23:47:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2021-11-20 23:47:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2021-11-20 23:47:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:47:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:47:58,720 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:47:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:47:58,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:47:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-20 23:47:58,720 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-20 23:47:58,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:47:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:47:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:47:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:47:58,721 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:47:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:47:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-20 23:47:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-20 23:47:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-20 23:47:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-20 23:47:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-20 23:47:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-20 23:47:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:47:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:47:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2021-11-20 23:47:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2021-11-20 23:47:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:47:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:47:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2021-11-20 23:47:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2021-11-20 23:47:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-20 23:47:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-20 23:47:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-20 23:47:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2021-11-20 23:47:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2021-11-20 23:47:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:47:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2021-11-20 23:47:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2021-11-20 23:47:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:47:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:47:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:47:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:47:59,388 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:47:59,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:48:00,021 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:48:05,964 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:48:06,349 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:48:07,287 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:48:07,288 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:48:07,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:07 BoogieIcfgContainer [2021-11-20 23:48:07,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:48:07,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:48:07,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:48:07,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:48:07,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:47:54" (1/3) ... [2021-11-20 23:48:07,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23220cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:07, skipping insertion in model container [2021-11-20 23:48:07,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:57" (2/3) ... [2021-11-20 23:48:07,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23220cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:48:07, skipping insertion in model container [2021-11-20 23:48:07,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:48:07" (3/3) ... [2021-11-20 23:48:07,304 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2021-11-20 23:48:07,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:48:07,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:48:07,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:48:07,393 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 [2021-11-20 23:48:07,394 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:48:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 1013 states, 638 states have (on average 1.329153605015674) internal successors, (848), 647 states have internal predecessors, (848), 305 states have call successors, (305), 69 states have call predecessors, (305), 68 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) [2021-11-20 23:48:07,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-20 23:48:07,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:07,468 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:07,469 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:07,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:07,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1674150278, now seen corresponding path program 1 times [2021-11-20 23:48:07,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:07,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747425826] [2021-11-20 23:48:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:07,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-20 23:48:08,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:08,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747425826] [2021-11-20 23:48:08,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747425826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:08,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:08,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:08,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334407456] [2021-11-20 23:48:08,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:08,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:08,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:08,519 INFO L87 Difference]: Start difference. First operand has 1013 states, 638 states have (on average 1.329153605015674) internal successors, (848), 647 states have internal predecessors, (848), 305 states have call successors, (305), 69 states have call predecessors, (305), 68 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 23:48:12,920 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 [] [2021-11-20 23:48:13,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:13,152 INFO L93 Difference]: Finished difference Result 2777 states and 3974 transitions. [2021-11-20 23:48:13,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:13,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2021-11-20 23:48:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:13,195 INFO L225 Difference]: With dead ends: 2777 [2021-11-20 23:48:13,195 INFO L226 Difference]: Without dead ends: 1779 [2021-11-20 23:48:13,207 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 [2021-11-20 23:48:13,212 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 1159 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:13,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 2598 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 23:48:13,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-20 23:48:13,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1777. [2021-11-20 23:48:13,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1131 states have (on average 1.3253757736516356) internal successors, (1499), 1144 states have internal predecessors, (1499), 514 states have call successors, (514), 131 states have call predecessors, (514), 130 states have return successors, (511), 508 states have call predecessors, (511), 511 states have call successors, (511) [2021-11-20 23:48:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2524 transitions. [2021-11-20 23:48:13,498 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2524 transitions. Word has length 140 [2021-11-20 23:48:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:13,502 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2524 transitions. [2021-11-20 23:48:13,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 23:48:13,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2524 transitions. [2021-11-20 23:48:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-20 23:48:13,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:13,533 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 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] [2021-11-20 23:48:13,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:48:13,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:13,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:13,536 INFO L85 PathProgramCache]: Analyzing trace with hash -373618320, now seen corresponding path program 1 times [2021-11-20 23:48:13,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:13,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109365068] [2021-11-20 23:48:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:13,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-11-20 23:48:14,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:14,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109365068] [2021-11-20 23:48:14,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109365068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:14,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:14,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:48:14,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866537462] [2021-11-20 23:48:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:14,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:48:14,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:48:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:14,417 INFO L87 Difference]: Start difference. First operand 1777 states and 2524 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:48:18,494 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 [] [2021-11-20 23:48:19,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:19,960 INFO L93 Difference]: Finished difference Result 2648 states and 3746 transitions. [2021-11-20 23:48:19,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:48:19,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2021-11-20 23:48:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:19,986 INFO L225 Difference]: With dead ends: 2648 [2021-11-20 23:48:19,987 INFO L226 Difference]: Without dead ends: 2632 [2021-11-20 23:48:19,989 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 [2021-11-20 23:48:19,991 INFO L933 BasicCegarLoop]: 1443 mSDtfsCounter, 1180 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:19,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 4054 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 668 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:48:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-11-20 23:48:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2630. [2021-11-20 23:48:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 1676 states have (on average 1.3251789976133652) internal successors, (2221), 1692 states have internal predecessors, (2221), 752 states have call successors, (752), 201 states have call predecessors, (752), 200 states have return successors, (749), 745 states have call predecessors, (749), 749 states have call successors, (749) [2021-11-20 23:48:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3722 transitions. [2021-11-20 23:48:20,245 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3722 transitions. Word has length 184 [2021-11-20 23:48:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:20,247 INFO L470 AbstractCegarLoop]: Abstraction has 2630 states and 3722 transitions. [2021-11-20 23:48:20,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-20 23:48:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3722 transitions. [2021-11-20 23:48:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-20 23:48:20,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:20,257 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:20,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:48:20,258 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1910621480, now seen corresponding path program 1 times [2021-11-20 23:48:20,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:20,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749262508] [2021-11-20 23:48:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:20,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2021-11-20 23:48:20,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:20,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749262508] [2021-11-20 23:48:20,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749262508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:20,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:20,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:20,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357102147] [2021-11-20 23:48:20,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:20,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:20,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:20,686 INFO L87 Difference]: Start difference. First operand 2630 states and 3722 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:48:25,617 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 [] [2021-11-20 23:48:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:25,845 INFO L93 Difference]: Finished difference Result 6500 states and 9181 transitions. [2021-11-20 23:48:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:25,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2021-11-20 23:48:25,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:25,885 INFO L225 Difference]: With dead ends: 6500 [2021-11-20 23:48:25,885 INFO L226 Difference]: Without dead ends: 3895 [2021-11-20 23:48:25,901 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 [2021-11-20 23:48:25,906 INFO L933 BasicCegarLoop]: 1334 mSDtfsCounter, 599 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:25,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2513 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 479 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-20 23:48:25,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2021-11-20 23:48:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3882. [2021-11-20 23:48:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2512 states have (on average 1.3335987261146496) internal successors, (3350), 2546 states have internal predecessors, (3350), 1052 states have call successors, (1052), 317 states have call predecessors, (1052), 316 states have return successors, (1049), 1033 states have call predecessors, (1049), 1049 states have call successors, (1049) [2021-11-20 23:48:26,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5451 transitions. [2021-11-20 23:48:26,178 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5451 transitions. Word has length 201 [2021-11-20 23:48:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:26,180 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5451 transitions. [2021-11-20 23:48:26,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:48:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5451 transitions. [2021-11-20 23:48:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-20 23:48:26,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:26,195 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 23:48:26,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:48:26,196 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash 525359793, now seen corresponding path program 1 times [2021-11-20 23:48:26,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:26,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095313041] [2021-11-20 23:48:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:26,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-11-20 23:48:26,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:26,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095313041] [2021-11-20 23:48:26,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095313041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:26,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:26,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:26,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186365472] [2021-11-20 23:48:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:26,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:26,583 INFO L87 Difference]: Start difference. First operand 3882 states and 5451 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 23:48:31,183 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 [] [2021-11-20 23:48:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:31,359 INFO L93 Difference]: Finished difference Result 7879 states and 11023 transitions. [2021-11-20 23:48:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 219 [2021-11-20 23:48:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:31,461 INFO L225 Difference]: With dead ends: 7879 [2021-11-20 23:48:31,461 INFO L226 Difference]: Without dead ends: 4022 [2021-11-20 23:48:31,477 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 [2021-11-20 23:48:31,483 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 600 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:31,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2545 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:48:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2021-11-20 23:48:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 4014. [2021-11-20 23:48:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2614 states have (on average 1.3339709257842387) internal successors, (3487), 2654 states have internal predecessors, (3487), 1056 states have call successors, (1056), 344 states have call predecessors, (1056), 342 states have return successors, (1053), 1032 states have call predecessors, (1053), 1053 states have call successors, (1053) [2021-11-20 23:48:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5596 transitions. [2021-11-20 23:48:31,729 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5596 transitions. Word has length 219 [2021-11-20 23:48:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:31,730 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 5596 transitions. [2021-11-20 23:48:31,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-20 23:48:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5596 transitions. [2021-11-20 23:48:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-20 23:48:31,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:31,748 INFO L514 BasicCegarLoop]: trace histogram [17, 12, 12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 23:48:31,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:48:31,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1853447411, now seen corresponding path program 1 times [2021-11-20 23:48:31,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:31,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102609045] [2021-11-20 23:48:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:31,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-11-20 23:48:32,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:32,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102609045] [2021-11-20 23:48:32,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102609045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:32,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:32,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:48:32,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822823347] [2021-11-20 23:48:32,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:32,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:48:32,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:48:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:48:32,299 INFO L87 Difference]: Start difference. First operand 4014 states and 5596 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:48:36,942 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 [] [2021-11-20 23:48:38,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:38,853 INFO L93 Difference]: Finished difference Result 5482 states and 7925 transitions. [2021-11-20 23:48:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:48:38,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 268 [2021-11-20 23:48:38,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:38,967 INFO L225 Difference]: With dead ends: 5482 [2021-11-20 23:48:38,967 INFO L226 Difference]: Without dead ends: 5480 [2021-11-20 23:48:38,969 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 [2021-11-20 23:48:38,970 INFO L933 BasicCegarLoop]: 1872 mSDtfsCounter, 1822 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:38,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 4939 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-20 23:48:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2021-11-20 23:48:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4014. [2021-11-20 23:48:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2614 states have (on average 1.3335883703136955) internal successors, (3486), 2654 states have internal predecessors, (3486), 1056 states have call successors, (1056), 344 states have call predecessors, (1056), 342 states have return successors, (1053), 1032 states have call predecessors, (1053), 1053 states have call successors, (1053) [2021-11-20 23:48:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5595 transitions. [2021-11-20 23:48:39,276 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5595 transitions. Word has length 268 [2021-11-20 23:48:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:39,277 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 5595 transitions. [2021-11-20 23:48:39,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:48:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5595 transitions. [2021-11-20 23:48:39,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-20 23:48:39,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:39,301 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 23:48:39,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:48:39,302 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:39,303 INFO L85 PathProgramCache]: Analyzing trace with hash 99450017, now seen corresponding path program 1 times [2021-11-20 23:48:39,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:39,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446227399] [2021-11-20 23:48:39,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:39,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2021-11-20 23:48:39,920 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446227399] [2021-11-20 23:48:39,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446227399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:39,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:39,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:39,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977244485] [2021-11-20 23:48:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:39,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:39,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:39,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:39,936 INFO L87 Difference]: Start difference. First operand 4014 states and 5595 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:48:43,485 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 [] [2021-11-20 23:48:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:44,895 INFO L93 Difference]: Finished difference Result 11092 states and 15445 transitions. [2021-11-20 23:48:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:44,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 407 [2021-11-20 23:48:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:44,980 INFO L225 Difference]: With dead ends: 11092 [2021-11-20 23:48:44,980 INFO L226 Difference]: Without dead ends: 7454 [2021-11-20 23:48:44,998 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 [2021-11-20 23:48:45,000 INFO L933 BasicCegarLoop]: 1450 mSDtfsCounter, 1095 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:45,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2620 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-20 23:48:45,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2021-11-20 23:48:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7437. [2021-11-20 23:48:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7437 states, 4839 states have (on average 1.3343666046703864) internal successors, (6457), 4914 states have internal predecessors, (6457), 1946 states have call successors, (1946), 653 states have call predecessors, (1946), 650 states have return successors, (1949), 1898 states have call predecessors, (1949), 1943 states have call successors, (1949) [2021-11-20 23:48:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7437 states to 7437 states and 10352 transitions. [2021-11-20 23:48:45,494 INFO L78 Accepts]: Start accepts. Automaton has 7437 states and 10352 transitions. Word has length 407 [2021-11-20 23:48:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:45,495 INFO L470 AbstractCegarLoop]: Abstraction has 7437 states and 10352 transitions. [2021-11-20 23:48:45,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-20 23:48:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 7437 states and 10352 transitions. [2021-11-20 23:48:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-20 23:48:45,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:45,529 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 23:48:45,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:48:45,530 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2010502779, now seen corresponding path program 1 times [2021-11-20 23:48:45,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:45,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878214105] [2021-11-20 23:48:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:45,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:46,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2021-11-20 23:48:46,089 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:46,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878214105] [2021-11-20 23:48:46,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878214105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:46,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:46,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:46,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339482831] [2021-11-20 23:48:46,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:46,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:46,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:46,095 INFO L87 Difference]: Start difference. First operand 7437 states and 10352 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-20 23:48:50,549 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 [] [2021-11-20 23:48:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:50,910 INFO L93 Difference]: Finished difference Result 11070 states and 15438 transitions. [2021-11-20 23:48:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 408 [2021-11-20 23:48:50,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:50,955 INFO L225 Difference]: With dead ends: 11070 [2021-11-20 23:48:50,956 INFO L226 Difference]: Without dead ends: 7448 [2021-11-20 23:48:50,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:50,972 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 9 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:50,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2405 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 451 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 23:48:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-11-20 23:48:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 7442. [2021-11-20 23:48:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7442 states, 4843 states have (on average 1.33429692339459) internal successors, (6462), 4918 states have internal predecessors, (6462), 1947 states have call successors, (1947), 653 states have call predecessors, (1947), 650 states have return successors, (1950), 1899 states have call predecessors, (1950), 1944 states have call successors, (1950) [2021-11-20 23:48:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7442 states to 7442 states and 10359 transitions. [2021-11-20 23:48:51,355 INFO L78 Accepts]: Start accepts. Automaton has 7442 states and 10359 transitions. Word has length 408 [2021-11-20 23:48:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:51,357 INFO L470 AbstractCegarLoop]: Abstraction has 7442 states and 10359 transitions. [2021-11-20 23:48:51,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-20 23:48:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 7442 states and 10359 transitions. [2021-11-20 23:48:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-20 23:48:51,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:51,395 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-20 23:48:51,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:48:51,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -598643858, now seen corresponding path program 1 times [2021-11-20 23:48:51,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:51,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730913131] [2021-11-20 23:48:51,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:51,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-20 23:48:51,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:51,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730913131] [2021-11-20 23:48:51,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730913131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:48:51,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:48:51,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:48:51,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966242443] [2021-11-20 23:48:51,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:48:51,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:48:51,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:48:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:48:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:51,998 INFO L87 Difference]: Start difference. First operand 7442 states and 10359 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:48:56,800 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 [] [2021-11-20 23:48:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:48:57,359 INFO L93 Difference]: Finished difference Result 12622 states and 17911 transitions. [2021-11-20 23:48:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:48:57,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 423 [2021-11-20 23:48:57,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:48:57,407 INFO L225 Difference]: With dead ends: 12622 [2021-11-20 23:48:57,408 INFO L226 Difference]: Without dead ends: 8995 [2021-11-20 23:48:57,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:48:57,428 INFO L933 BasicCegarLoop]: 1733 mSDtfsCounter, 389 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:48:57,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 3062 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 23:48:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2021-11-20 23:48:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 7458. [2021-11-20 23:48:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 4854 states have (on average 1.3341573959620932) internal successors, (6476), 4929 states have internal predecessors, (6476), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 650 states have return successors, (1955), 1904 states have call predecessors, (1955), 1949 states have call successors, (1955) [2021-11-20 23:48:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 10383 transitions. [2021-11-20 23:48:57,870 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 10383 transitions. Word has length 423 [2021-11-20 23:48:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:48:57,871 INFO L470 AbstractCegarLoop]: Abstraction has 7458 states and 10383 transitions. [2021-11-20 23:48:57,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:48:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 10383 transitions. [2021-11-20 23:48:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-11-20 23:48:57,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:48:57,908 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:48:57,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:48:57,909 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:48:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:48:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1662425290, now seen corresponding path program 1 times [2021-11-20 23:48:57,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:48:57,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375479800] [2021-11-20 23:48:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:57,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:48:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:48:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2021-11-20 23:48:58,491 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:48:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375479800] [2021-11-20 23:48:58,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375479800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:48:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177924776] [2021-11-20 23:48:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:48:58,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:48:58,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:48:58,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:48:58,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:49:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:00,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 7070 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:49:00,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2021-11-20 23:49:01,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:49:01,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177924776] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:01,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:49:01,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-20 23:49:01,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709358331] [2021-11-20 23:49:01,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:49:01,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:49:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:49:01,325 INFO L87 Difference]: Start difference. First operand 7458 states and 10383 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:49:06,589 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 [] [2021-11-20 23:49:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:08,023 INFO L93 Difference]: Finished difference Result 20233 states and 29976 transitions. [2021-11-20 23:49:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:49:08,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 439 [2021-11-20 23:49:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:08,088 INFO L225 Difference]: With dead ends: 20233 [2021-11-20 23:49:08,088 INFO L226 Difference]: Without dead ends: 16590 [2021-11-20 23:49:08,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:49:08,108 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 1200 mSDsluCounter, 6643 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 7779 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:08,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 7779 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1452 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-20 23:49:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16590 states. [2021-11-20 23:49:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16590 to 7462. [2021-11-20 23:49:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 4858 states have (on average 1.3338822560724577) internal successors, (6480), 4933 states have internal predecessors, (6480), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 650 states have return successors, (1955), 1904 states have call predecessors, (1955), 1949 states have call successors, (1955) [2021-11-20 23:49:08,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 10387 transitions. [2021-11-20 23:49:08,677 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 10387 transitions. Word has length 439 [2021-11-20 23:49:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:08,678 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 10387 transitions. [2021-11-20 23:49:08,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-20 23:49:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 10387 transitions. [2021-11-20 23:49:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-20 23:49:08,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:08,709 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:08,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:08,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:08,925 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:08,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:08,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1064320962, now seen corresponding path program 1 times [2021-11-20 23:49:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620907809] [2021-11-20 23:49:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:08,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-20 23:49:09,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:09,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620907809] [2021-11-20 23:49:09,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620907809] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:49:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005829188] [2021-11-20 23:49:09,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:09,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:09,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:09,485 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:49:09,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:49:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:10,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 7193 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:49:10,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:11,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2021-11-20 23:49:11,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:49:11,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005829188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:49:11,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:49:11,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-20 23:49:11,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513679514] [2021-11-20 23:49:11,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:49:11,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:49:11,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:49:11,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:49:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:49:11,809 INFO L87 Difference]: Start difference. First operand 7462 states and 10387 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-20 23:49:16,862 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 [] [2021-11-20 23:49:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:17,224 INFO L93 Difference]: Finished difference Result 11149 states and 15560 transitions. [2021-11-20 23:49:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:49:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) Word has length 469 [2021-11-20 23:49:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:17,255 INFO L225 Difference]: With dead ends: 11149 [2021-11-20 23:49:17,255 INFO L226 Difference]: Without dead ends: 7504 [2021-11-20 23:49:17,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 23:49:17,270 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 9 mSDsluCounter, 5716 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6044 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:17,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 6044 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1130 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-20 23:49:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2021-11-20 23:49:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 7469. [2021-11-20 23:49:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 4864 states have (on average 1.3338815789473684) internal successors, (6488), 4938 states have internal predecessors, (6488), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 651 states have return successors, (1964), 1906 states have call predecessors, (1964), 1949 states have call successors, (1964) [2021-11-20 23:49:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 10404 transitions. [2021-11-20 23:49:17,715 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 10404 transitions. Word has length 469 [2021-11-20 23:49:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:17,716 INFO L470 AbstractCegarLoop]: Abstraction has 7469 states and 10404 transitions. [2021-11-20 23:49:17,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-20 23:49:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 10404 transitions. [2021-11-20 23:49:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-20 23:49:17,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:17,744 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:49:17,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:17,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:17,969 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:49:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1453851145, now seen corresponding path program 1 times [2021-11-20 23:49:17,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:49:17,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560227522] [2021-11-20 23:49:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:17,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:49:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-20 23:49:18,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:49:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560227522] [2021-11-20 23:49:18,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560227522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:49:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445097449] [2021-11-20 23:49:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:49:18,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:18,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:18,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:49:18,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f2b0ede-bd18-4b59-953b-11fda8ee5f9b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:49:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:49:19,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 7196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:49:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-20 23:49:20,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:49:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-20 23:49:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445097449] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:49:21,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803741476] [2021-11-20 23:49:21,834 INFO L159 IcfgInterpreter]: Started Sifa with 213 locations of interest [2021-11-20 23:49:21,834 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:49:21,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:49:21,844 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:49:21,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs