./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-ethernet-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba --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 b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:40:29,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:40:29,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:40:29,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:40:29,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:40:29,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:40:29,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:40:29,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:40:29,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:40:29,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:40:29,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:40:29,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:40:29,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:40:29,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:40:29,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:40:29,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:40:29,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:40:29,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:40:29,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:40:29,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:40:29,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:40:29,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:40:29,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:40:29,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:40:29,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:40:29,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:40:29,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:40:29,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:40:29,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:40:29,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:40:29,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:40:29,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:40:29,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:40:29,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:40:29,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:40:29,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:40:29,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:40:29,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:40:29,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:40:29,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:40:29,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:40:29,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:40:29,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:40:29,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:40:29,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:40:29,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:40:29,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:40:29,394 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:40:29,395 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:40:29,395 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:40:29,395 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:40:29,395 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:40:29,396 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:40:29,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:40:29,396 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:40:29,396 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:40:29,397 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:40:29,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:40:29,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:40:29,397 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:40:29,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:40:29,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:40:29,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:40:29,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:40:29,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:40:29,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:40:29,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:40:29,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:40:29,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:40:29,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:40:29,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:40:29,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:29,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:40:29,401 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:40:29,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:40:29,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:40:29,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:40:29,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:40:29,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:40:29,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:40:29,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 [2022-11-22 02:40:29,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:40:29,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:40:29,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:40:29,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:40:29,735 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:40:29,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-22 02:40:32,916 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:40:33,781 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:40:33,822 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-22 02:40:33,928 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/data/d3de0127c/f9ec8c82d04940668fc84dc52c228d3b/FLAG75da113fb [2022-11-22 02:40:33,943 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/data/d3de0127c/f9ec8c82d04940668fc84dc52c228d3b [2022-11-22 02:40:33,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:40:33,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:40:33,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:33,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:40:33,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:40:33,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:33" (1/1) ... [2022-11-22 02:40:33,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1484dcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:33, skipping insertion in model container [2022-11-22 02:40:33,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:33" (1/1) ... [2022-11-22 02:40:33,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:40:34,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:40:38,215 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2022-11-22 02:40:38,221 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2022-11-22 02:40:38,221 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2022-11-22 02:40:38,222 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2022-11-22 02:40:38,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:38,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:40:38,896 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2022-11-22 02:40:38,896 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2022-11-22 02:40:38,897 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2022-11-22 02:40:38,897 WARN L237 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_e4a53a44-6191-44b8-a919-7b55e1ca26c4/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2022-11-22 02:40:38,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:39,160 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:40:39,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39 WrapperNode [2022-11-22 02:40:39,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:39,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:39,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:40:39,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:40:39,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:39,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:39,770 INFO L138 Inliner]: procedures = 460, calls = 5123, calls flagged for inlining = 268, calls inlined = 251, statements flattened = 11408 [2022-11-22 02:40:39,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:39,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:40:39,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:40:39,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:40:39,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:39,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:39,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:39,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:40,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:40,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:40,550 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:40,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:40,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:40:40,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:40:40,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:40:40,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:40:40,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (1/1) ... [2022-11-22 02:40:40,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:40,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:40,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:40:40,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:40:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2022-11-22 02:40:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2022-11-22 02:40:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2022-11-22 02:40:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2022-11-22 02:40:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 02:40:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 02:40:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:40:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:40:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-22 02:40:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-22 02:40:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 02:40:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 02:40:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2022-11-22 02:40:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2022-11-22 02:40:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2022-11-22 02:40:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2022-11-22 02:40:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:40:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:40:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-22 02:40:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-22 02:40:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-22 02:40:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-22 02:40:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-22 02:40:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-22 02:40:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:40:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:40:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-22 02:40:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-22 02:40:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-22 02:40:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-22 02:40:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-22 02:40:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-22 02:40:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-22 02:40:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-22 02:40:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:40:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:40:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-22 02:40:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-22 02:40:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:40:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:40:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2022-11-22 02:40:40,784 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2022-11-22 02:40:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:40:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:40:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-22 02:40:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-22 02:40:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:40:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:40:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:40:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:40:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:40:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:40:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-22 02:40:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-22 02:40:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:40:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2022-11-22 02:40:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2022-11-22 02:40:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2022-11-22 02:40:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2022-11-22 02:40:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-22 02:40:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-22 02:40:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2022-11-22 02:40:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2022-11-22 02:40:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:40:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:40:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 02:40:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 02:40:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2022-11-22 02:40:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2022-11-22 02:40:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2022-11-22 02:40:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2022-11-22 02:40:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2022-11-22 02:40:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2022-11-22 02:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2022-11-22 02:40:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2022-11-22 02:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:40:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:40:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:40:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:40:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:40:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:40:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:40:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:40:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-22 02:40:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-22 02:40:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-22 02:40:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-22 02:40:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:40:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:40:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-22 02:40:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-22 02:40:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-22 02:40:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-22 02:40:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:40:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:40:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2022-11-22 02:40:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2022-11-22 02:40:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:40:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:40:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 02:40:40,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 02:40:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2022-11-22 02:40:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2022-11-22 02:40:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2022-11-22 02:40:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2022-11-22 02:40:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:40:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-22 02:40:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-22 02:40:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:40:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:40:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 02:40:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 02:40:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 02:40:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 02:40:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:40:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:40:40,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:40:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 02:40:40,797 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 02:40:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:40:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2022-11-22 02:40:40,798 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2022-11-22 02:40:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-22 02:40:40,798 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-22 02:40:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-22 02:40:40,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-22 02:40:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:40:40,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 02:40:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 02:40:40,799 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 02:40:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 02:40:40,799 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 02:40:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-22 02:40:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-22 02:40:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:40:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:40:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:40:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:40:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2022-11-22 02:40:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2022-11-22 02:40:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:40:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:40:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:40:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:40:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-22 02:40:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-22 02:40:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-22 02:40:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-22 02:40:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2022-11-22 02:40:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2022-11-22 02:40:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:40:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:40:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-22 02:40:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-22 02:40:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-22 02:40:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-22 02:40:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-22 02:40:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-22 02:40:40,803 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2022-11-22 02:40:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2022-11-22 02:40:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2022-11-22 02:40:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2022-11-22 02:40:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-22 02:40:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-22 02:40:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-22 02:40:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-22 02:40:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-22 02:40:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-22 02:40:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:40:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:40:40,805 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 02:40:40,805 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 02:40:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2022-11-22 02:40:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2022-11-22 02:40:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-22 02:40:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-22 02:40:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:40:40,806 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:40:40,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:40:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2022-11-22 02:40:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2022-11-22 02:40:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:40:40,807 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:40:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:40:40,807 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 02:40:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 02:40:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-22 02:40:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-22 02:40:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-22 02:40:40,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-22 02:40:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:40:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2022-11-22 02:40:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2022-11-22 02:40:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2022-11-22 02:40:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2022-11-22 02:40:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 02:40:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 02:40:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2022-11-22 02:40:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2022-11-22 02:40:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:40:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:40:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-22 02:40:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-22 02:40:40,810 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2022-11-22 02:40:40,810 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2022-11-22 02:40:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:40:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:40:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-22 02:40:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-22 02:40:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2022-11-22 02:40:40,811 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2022-11-22 02:40:40,811 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-22 02:40:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-22 02:40:40,812 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2022-11-22 02:40:40,812 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2022-11-22 02:40:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2022-11-22 02:40:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2022-11-22 02:40:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 02:40:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 02:40:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:40:40,813 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:40:40,813 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 02:40:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 02:40:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:40:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:40:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:40:40,814 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:40:40,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:40:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2022-11-22 02:40:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2022-11-22 02:40:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:40:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:40:40,815 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-22 02:40:40,815 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-22 02:40:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2022-11-22 02:40:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2022-11-22 02:40:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-22 02:40:40,816 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-22 02:40:40,816 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2022-11-22 02:40:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2022-11-22 02:40:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-22 02:40:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-22 02:40:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:40:40,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:40:40,817 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-22 02:40:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-22 02:40:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 02:40:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 02:40:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-22 02:40:40,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-22 02:40:40,818 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2022-11-22 02:40:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2022-11-22 02:40:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-22 02:40:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-22 02:40:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2022-11-22 02:40:40,819 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2022-11-22 02:40:40,819 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 02:40:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 02:40:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:40:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2022-11-22 02:40:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2022-11-22 02:40:40,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:40:40,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:40:42,115 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:40:42,120 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:40:43,649 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:40:54,133 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:40:54,442 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:41:00,333 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:41:00,333 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-22 02:41:00,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:41:00 BoogieIcfgContainer [2022-11-22 02:41:00,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:41:00,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:41:00,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:41:00,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:41:00,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:40:33" (1/3) ... [2022-11-22 02:41:00,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79708b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:41:00, skipping insertion in model container [2022-11-22 02:41:00,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:39" (2/3) ... [2022-11-22 02:41:00,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79708b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:41:00, skipping insertion in model container [2022-11-22 02:41:00,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:41:00" (3/3) ... [2022-11-22 02:41:00,359 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-22 02:41:00,383 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:41:00,384 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 02:41:00,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:41:00,536 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2be4112b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:41:00,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 02:41:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 2560 states, 1522 states have (on average 1.354796320630749) internal successors, (2062), 1622 states have internal predecessors, (2062), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 862 states have call predecessors, (907), 907 states have call successors, (907) [2022-11-22 02:41:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-22 02:41:00,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:00,582 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:00,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:41:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash -917230091, now seen corresponding path program 1 times [2022-11-22 02:41:00,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:00,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259861243] [2022-11-22 02:41:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:00,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 02:41:02,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:02,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259861243] [2022-11-22 02:41:02,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259861243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:02,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:02,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:41:02,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604098566] [2022-11-22 02:41:02,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:02,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:41:02,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:02,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:41:02,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:02,154 INFO L87 Difference]: Start difference. First operand has 2560 states, 1522 states have (on average 1.354796320630749) internal successors, (2062), 1622 states have internal predecessors, (2062), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 862 states have call predecessors, (907), 907 states have call successors, (907) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:41:08,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:41:09,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:09,815 INFO L93 Difference]: Finished difference Result 7400 states and 11257 transitions. [2022-11-22 02:41:09,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:41:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2022-11-22 02:41:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:09,886 INFO L225 Difference]: With dead ends: 7400 [2022-11-22 02:41:09,887 INFO L226 Difference]: Without dead ends: 4856 [2022-11-22 02:41:09,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:09,915 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 3514 mSDsluCounter, 3398 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3514 SdHoareTripleChecker+Valid, 7664 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:09,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3514 Valid, 7664 Invalid, 900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 892 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-22 02:41:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2022-11-22 02:41:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4843. [2022-11-22 02:41:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4843 states, 2877 states have (on average 1.3461939520333681) internal successors, (3873), 3064 states have internal predecessors, (3873), 1724 states have call successors, (1724), 241 states have call predecessors, (1724), 240 states have return successors, (1721), 1636 states have call predecessors, (1721), 1721 states have call successors, (1721) [2022-11-22 02:41:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 7318 transitions. [2022-11-22 02:41:10,660 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 7318 transitions. Word has length 150 [2022-11-22 02:41:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:10,664 INFO L495 AbstractCegarLoop]: Abstraction has 4843 states and 7318 transitions. [2022-11-22 02:41:10,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:41:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 7318 transitions. [2022-11-22 02:41:10,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-22 02:41:10,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:10,682 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:10,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:41:10,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:41:10,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:10,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1654642702, now seen corresponding path program 1 times [2022-11-22 02:41:10,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:10,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213646026] [2022-11-22 02:41:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:10,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-22 02:41:11,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:11,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213646026] [2022-11-22 02:41:11,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213646026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:11,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:11,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:41:11,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948323599] [2022-11-22 02:41:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:41:11,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:41:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:11,429 INFO L87 Difference]: Start difference. First operand 4843 states and 7318 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:41:18,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:41:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:19,052 INFO L93 Difference]: Finished difference Result 10690 states and 16175 transitions. [2022-11-22 02:41:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:41:19,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 163 [2022-11-22 02:41:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:19,098 INFO L225 Difference]: With dead ends: 10690 [2022-11-22 02:41:19,098 INFO L226 Difference]: Without dead ends: 5874 [2022-11-22 02:41:19,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:19,126 INFO L413 NwaCegarLoop]: 3990 mSDtfsCounter, 2521 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 7365 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:19,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2521 Valid, 7365 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 921 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 02:41:19,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2022-11-22 02:41:19,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5867. [2022-11-22 02:41:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 3536 states have (on average 1.3523755656108598) internal successors, (4782), 3752 states have internal predecessors, (4782), 2041 states have call successors, (2041), 290 states have call predecessors, (2041), 288 states have return successors, (2038), 1938 states have call predecessors, (2038), 2038 states have call successors, (2038) [2022-11-22 02:41:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 8861 transitions. [2022-11-22 02:41:19,713 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 8861 transitions. Word has length 163 [2022-11-22 02:41:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:19,716 INFO L495 AbstractCegarLoop]: Abstraction has 5867 states and 8861 transitions. [2022-11-22 02:41:19,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 02:41:19,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 8861 transitions. [2022-11-22 02:41:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-22 02:41:19,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:19,732 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:19,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:41:19,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:41:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash 524036673, now seen corresponding path program 1 times [2022-11-22 02:41:19,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:19,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851538070] [2022-11-22 02:41:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-22 02:41:20,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:20,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851538070] [2022-11-22 02:41:20,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851538070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:20,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:20,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:41:20,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450232201] [2022-11-22 02:41:20,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:20,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:41:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:41:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:41:20,856 INFO L87 Difference]: Start difference. First operand 5867 states and 8861 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:41:27,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:41:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:31,084 INFO L93 Difference]: Finished difference Result 9913 states and 14955 transitions. [2022-11-22 02:41:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:41:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 192 [2022-11-22 02:41:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:31,165 INFO L225 Difference]: With dead ends: 9913 [2022-11-22 02:41:31,166 INFO L226 Difference]: Without dead ends: 9890 [2022-11-22 02:41:31,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:41:31,178 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 3536 mSDsluCounter, 7628 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 11884 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:31,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 11884 Invalid, 1315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1314 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2022-11-22 02:41:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2022-11-22 02:41:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 9877. [2022-11-22 02:41:32,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9877 states, 5941 states have (on average 1.349436121865006) internal successors, (8017), 6301 states have internal predecessors, (8017), 3441 states have call successors, (3441), 495 states have call predecessors, (3441), 493 states have return successors, (3438), 3272 states have call predecessors, (3438), 3438 states have call successors, (3438) [2022-11-22 02:41:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9877 states to 9877 states and 14896 transitions. [2022-11-22 02:41:32,063 INFO L78 Accepts]: Start accepts. Automaton has 9877 states and 14896 transitions. Word has length 192 [2022-11-22 02:41:32,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:32,065 INFO L495 AbstractCegarLoop]: Abstraction has 9877 states and 14896 transitions. [2022-11-22 02:41:32,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:41:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 9877 states and 14896 transitions. [2022-11-22 02:41:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-22 02:41:32,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:32,089 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:41:32,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:41:32,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 672216007, now seen corresponding path program 1 times [2022-11-22 02:41:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:32,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397805958] [2022-11-22 02:41:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-11-22 02:41:32,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:32,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397805958] [2022-11-22 02:41:32,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397805958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:32,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:32,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:41:32,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8910574] [2022-11-22 02:41:32,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:32,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:41:32,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:41:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:32,822 INFO L87 Difference]: Start difference. First operand 9877 states and 14896 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:41:41,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:41:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:42,057 INFO L93 Difference]: Finished difference Result 21465 states and 32389 transitions. [2022-11-22 02:41:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:41:42,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 210 [2022-11-22 02:41:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:42,160 INFO L225 Difference]: With dead ends: 21465 [2022-11-22 02:41:42,161 INFO L226 Difference]: Without dead ends: 13252 [2022-11-22 02:41:42,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:42,220 INFO L413 NwaCegarLoop]: 5653 mSDtfsCounter, 2525 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 9026 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:42,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 9026 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1189 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-22 02:41:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13252 states. [2022-11-22 02:41:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13252 to 13244. [2022-11-22 02:41:43,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 7986 states have (on average 1.350237916353619) internal successors, (10783), 8463 states have internal predecessors, (10783), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4368 states have call predecessors, (4590), 4590 states have call successors, (4590) [2022-11-22 02:41:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 19966 transitions. [2022-11-22 02:41:43,708 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 19966 transitions. Word has length 210 [2022-11-22 02:41:43,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:43,709 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 19966 transitions. [2022-11-22 02:41:43,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:41:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 19966 transitions. [2022-11-22 02:41:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-22 02:41:43,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:43,773 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:43,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:41:43,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:41:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:43,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1964098321, now seen corresponding path program 1 times [2022-11-22 02:41:43,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:43,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273936562] [2022-11-22 02:41:43,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:43,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2022-11-22 02:41:45,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:45,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273936562] [2022-11-22 02:41:45,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273936562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:45,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:45,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:41:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460488834] [2022-11-22 02:41:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:45,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:41:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:45,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:41:45,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:41:45,309 INFO L87 Difference]: Start difference. First operand 13244 states and 19966 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2022-11-22 02:41:52,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:41:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:41:57,303 INFO L93 Difference]: Finished difference Result 15439 states and 23530 transitions. [2022-11-22 02:41:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:41:57,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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 272 [2022-11-22 02:41:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:41:57,386 INFO L225 Difference]: With dead ends: 15439 [2022-11-22 02:41:57,386 INFO L226 Difference]: Without dead ends: 15437 [2022-11-22 02:41:57,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:41:57,395 INFO L413 NwaCegarLoop]: 4953 mSDtfsCounter, 4576 mSDsluCounter, 8354 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4745 SdHoareTripleChecker+Valid, 13307 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:41:57,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4745 Valid, 13307 Invalid, 1816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [167 Valid, 1648 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2022-11-22 02:41:57,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15437 states. [2022-11-22 02:41:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15437 to 13244. [2022-11-22 02:41:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 7986 states have (on average 1.3501126972201352) internal successors, (10782), 8463 states have internal predecessors, (10782), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4368 states have call predecessors, (4590), 4590 states have call successors, (4590) [2022-11-22 02:41:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 19965 transitions. [2022-11-22 02:41:58,488 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 19965 transitions. Word has length 272 [2022-11-22 02:41:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:41:58,493 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 19965 transitions. [2022-11-22 02:41:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (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) [2022-11-22 02:41:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 19965 transitions. [2022-11-22 02:41:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-22 02:41:58,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:41:58,563 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:41:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:41:58,564 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:41:58,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:41:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1174112272, now seen corresponding path program 1 times [2022-11-22 02:41:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:41:58,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932787689] [2022-11-22 02:41:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:41:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:41:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:41:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2022-11-22 02:41:59,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:41:59,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932787689] [2022-11-22 02:41:59,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932787689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:59,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:41:59,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:41:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988202107] [2022-11-22 02:41:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:59,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:41:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:59,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:41:59,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:41:59,969 INFO L87 Difference]: Start difference. First operand 13244 states and 19965 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:42:07,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:07,829 INFO L93 Difference]: Finished difference Result 21240 states and 32289 transitions. [2022-11-22 02:42:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:07,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 413 [2022-11-22 02:42:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:07,928 INFO L225 Difference]: With dead ends: 21240 [2022-11-22 02:42:07,929 INFO L226 Difference]: Without dead ends: 15350 [2022-11-22 02:42:07,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:07,973 INFO L413 NwaCegarLoop]: 4116 mSDtfsCounter, 513 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 7614 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:07,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 7614 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 959 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2022-11-22 02:42:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15350 states. [2022-11-22 02:42:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15350 to 13252. [2022-11-22 02:42:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13252 states, 7994 states have (on average 1.349762321741306) internal successors, (10790), 8471 states have internal predecessors, (10790), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4368 states have call predecessors, (4590), 4590 states have call successors, (4590) [2022-11-22 02:42:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13252 states to 13252 states and 19973 transitions. [2022-11-22 02:42:09,074 INFO L78 Accepts]: Start accepts. Automaton has 13252 states and 19973 transitions. Word has length 413 [2022-11-22 02:42:09,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:09,075 INFO L495 AbstractCegarLoop]: Abstraction has 13252 states and 19973 transitions. [2022-11-22 02:42:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:42:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13252 states and 19973 transitions. [2022-11-22 02:42:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-22 02:42:09,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:09,156 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:42:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:42:09,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:42:09,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 365191432, now seen corresponding path program 1 times [2022-11-22 02:42:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:09,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407571878] [2022-11-22 02:42:09,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:09,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2022-11-22 02:42:10,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407571878] [2022-11-22 02:42:10,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407571878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:10,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:42:10,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:42:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547317950] [2022-11-22 02:42:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:10,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:10,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:10,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:10,122 INFO L87 Difference]: Start difference. First operand 13252 states and 19973 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 02:42:16,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:18,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:19,470 INFO L93 Difference]: Finished difference Result 20243 states and 30645 transitions. [2022-11-22 02:42:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:19,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 428 [2022-11-22 02:42:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:19,569 INFO L225 Difference]: With dead ends: 20243 [2022-11-22 02:42:19,569 INFO L226 Difference]: Without dead ends: 14337 [2022-11-22 02:42:19,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:42:19,611 INFO L413 NwaCegarLoop]: 3985 mSDtfsCounter, 433 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 7460 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:19,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 7460 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 956 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2022-11-22 02:42:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14337 states. [2022-11-22 02:42:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14337 to 13326. [2022-11-22 02:42:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13326 states, 8042 states have (on average 1.3494155682666003) internal successors, (10852), 8521 states have internal predecessors, (10852), 4619 states have call successors, (4619), 666 states have call predecessors, (4619), 663 states have return successors, (4616), 4394 states have call predecessors, (4616), 4616 states have call successors, (4616) [2022-11-22 02:42:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13326 states to 13326 states and 20087 transitions. [2022-11-22 02:42:20,724 INFO L78 Accepts]: Start accepts. Automaton has 13326 states and 20087 transitions. Word has length 428 [2022-11-22 02:42:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:20,726 INFO L495 AbstractCegarLoop]: Abstraction has 13326 states and 20087 transitions. [2022-11-22 02:42:20,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 3 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 02:42:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13326 states and 20087 transitions. [2022-11-22 02:42:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-22 02:42:20,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:20,783 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:42:20,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:42:20,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:42:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash 2131717891, now seen corresponding path program 1 times [2022-11-22 02:42:20,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:20,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758442755] [2022-11-22 02:42:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2022-11-22 02:42:22,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:22,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758442755] [2022-11-22 02:42:22,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758442755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:42:22,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993696479] [2022-11-22 02:42:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:22,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:42:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:42:22,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:42:22,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:42:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:25,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 8254 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:42:25,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:42:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-11-22 02:42:25,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:42:25,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993696479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:42:25,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:42:25,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-22 02:42:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758748531] [2022-11-22 02:42:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:42:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:42:25,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:42:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:42:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:42:25,678 INFO L87 Difference]: Start difference. First operand 13326 states and 20087 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 02:42:31,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:42:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:42:33,325 INFO L93 Difference]: Finished difference Result 20415 states and 30924 transitions. [2022-11-22 02:42:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:42:33,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 428 [2022-11-22 02:42:33,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:42:33,427 INFO L225 Difference]: With dead ends: 20415 [2022-11-22 02:42:33,428 INFO L226 Difference]: Without dead ends: 14481 [2022-11-22 02:42:33,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:42:33,469 INFO L413 NwaCegarLoop]: 4210 mSDtfsCounter, 548 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 7756 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:42:33,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 7756 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1024 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-22 02:42:33,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14481 states. [2022-11-22 02:42:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14481 to 13458. [2022-11-22 02:42:34,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13458 states, 8139 states have (on average 1.3505344636933285) internal successors, (10992), 8623 states have internal predecessors, (10992), 4654 states have call successors, (4654), 666 states have call predecessors, (4654), 663 states have return successors, (4651), 4428 states have call predecessors, (4651), 4651 states have call successors, (4651) [2022-11-22 02:42:34,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13458 states to 13458 states and 20297 transitions. [2022-11-22 02:42:34,519 INFO L78 Accepts]: Start accepts. Automaton has 13458 states and 20297 transitions. Word has length 428 [2022-11-22 02:42:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:42:34,520 INFO L495 AbstractCegarLoop]: Abstraction has 13458 states and 20297 transitions. [2022-11-22 02:42:34,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-22 02:42:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 13458 states and 20297 transitions. [2022-11-22 02:42:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-22 02:42:34,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:42:34,573 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:42:34,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:42:34,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:42:34,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:42:34,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:42:34,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1170518764, now seen corresponding path program 1 times [2022-11-22 02:42:34,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:42:34,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43926546] [2022-11-22 02:42:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:34,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:42:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2022-11-22 02:42:36,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:42:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43926546] [2022-11-22 02:42:36,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43926546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:42:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802312711] [2022-11-22 02:42:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:42:36,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:42:36,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:42:36,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:42:36,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4a53a44-6191-44b8-a919-7b55e1ca26c4/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:42:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:42:39,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 8272 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:42:39,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:42:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 129 proven. 1 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-22 02:42:39,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:42:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2022-11-22 02:42:40,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802312711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:42:40,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [765223403] [2022-11-22 02:42:40,060 INFO L159 IcfgInterpreter]: Started Sifa with 224 locations of interest [2022-11-22 02:42:40,060 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:42:40,066 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:42:40,073 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:42:40,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs