./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/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_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V --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 --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:36:13,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:36:13,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:36:13,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:36:13,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:36:13,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:36:13,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:36:13,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:36:13,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:36:13,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:36:13,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:36:13,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:36:13,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:36:13,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:36:13,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:36:13,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:36:13,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:36:13,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:36:13,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:36:13,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:36:13,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:36:13,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:36:13,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:36:13,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:36:13,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:36:13,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:36:13,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:36:13,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:36:13,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:36:13,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:36:13,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:36:13,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:36:13,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:36:13,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:36:13,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:36:13,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:36:13,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:36:13,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:36:13,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:36:13,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:36:13,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:36:13,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:36:14,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:36:14,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:36:14,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:36:14,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:36:14,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:36:14,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:36:14,028 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:36:14,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:36:14,029 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:36:14,029 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:36:14,030 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:36:14,030 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:36:14,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:36:14,031 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:36:14,031 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:36:14,031 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:36:14,032 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:36:14,032 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:36:14,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:36:14,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:36:14,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:36:14,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:36:14,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:36:14,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:36:14,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:36:14,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:36:14,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:36:14,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:36:14,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:36:14,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:14,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:36:14,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:36:14,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:36:14,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:36:14,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:36:14,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:36:14,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:36:14,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:36:14,037 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 [2021-11-23 03:36:14,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:36:14,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:36:14,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:36:14,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:36:14,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:36:14,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-23 03:36:14,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/data/4fbca84a3/32efcdf29e764099840c8a7cd52a23ad/FLAGece482238 [2021-11-23 03:36:15,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:36:15,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-23 03:36:15,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/data/4fbca84a3/32efcdf29e764099840c8a7cd52a23ad/FLAGece482238 [2021-11-23 03:36:15,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/data/4fbca84a3/32efcdf29e764099840c8a7cd52a23ad [2021-11-23 03:36:15,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:36:15,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:36:15,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:15,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:36:15,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:36:15,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:15" (1/1) ... [2021-11-23 03:36:15,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f91f216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:15, skipping insertion in model container [2021-11-23 03:36:15,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:36:15" (1/1) ... [2021-11-23 03:36:15,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:36:16,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:36:20,342 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:20,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:20,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:20,347 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:20,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:20,460 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:36:21,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:21,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:21,041 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:21,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/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] [2021-11-23 03:36:21,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:36:21,326 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:36:21,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21 WrapperNode [2021-11-23 03:36:21,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:36:21,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:21,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:36:21,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:36:21,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:21,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:21,920 INFO L137 Inliner]: procedures = 460, calls = 5099, calls flagged for inlining = 268, calls inlined = 251, statements flattened = 11051 [2021-11-23 03:36:21,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:36:21,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:36:21,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:36:21,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:36:21,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:21,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:21,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:22,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:22,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:22,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:22,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:22,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:36:22,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:36:22,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:36:22,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:36:22,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (1/1) ... [2021-11-23 03:36:22,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:36:22,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:22,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:36:22,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:36:22,655 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2021-11-23 03:36:22,656 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2021-11-23 03:36:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2021-11-23 03:36:22,656 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2021-11-23 03:36:22,656 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 03:36:22,657 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 03:36:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:36:22,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:36:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-23 03:36:22,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-23 03:36:22,657 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:36:22,657 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:36:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2021-11-23 03:36:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2021-11-23 03:36:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2021-11-23 03:36:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2021-11-23 03:36:22,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:36:22,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:36:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:36:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:36:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:36:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:36:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 03:36:22,659 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 03:36:22,659 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:36:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:36:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 03:36:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 03:36:22,660 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 03:36:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 03:36:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 03:36:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 03:36:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-23 03:36:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-23 03:36:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:36:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:36:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 03:36:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 03:36:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:36:22,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:36:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2021-11-23 03:36:22,663 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2021-11-23 03:36:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:36:22,664 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:36:22,665 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 03:36:22,665 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 03:36:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:36:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:36:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:36:22,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:36:22,666 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:36:22,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:36:22,667 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 03:36:22,667 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 03:36:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:36:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2021-11-23 03:36:22,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2021-11-23 03:36:22,668 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2021-11-23 03:36:22,668 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2021-11-23 03:36:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-23 03:36:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-23 03:36:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2021-11-23 03:36:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2021-11-23 03:36:22,669 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:36:22,669 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:36:22,670 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:36:22,670 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:36:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2021-11-23 03:36:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2021-11-23 03:36:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2021-11-23 03:36:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2021-11-23 03:36:22,671 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2021-11-23 03:36:22,671 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2021-11-23 03:36:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:36:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2021-11-23 03:36:22,672 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2021-11-23 03:36:22,672 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:36:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:36:22,673 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:36:22,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:36:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:36:22,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:36:22,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:36:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:36:22,675 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-23 03:36:22,675 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-23 03:36:22,676 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:36:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:36:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:36:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:36:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:36:22,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:36:22,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:36:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:36:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:36:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:36:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2021-11-23 03:36:22,678 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2021-11-23 03:36:22,678 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 03:36:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 03:36:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:36:22,679 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:36:22,679 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2021-11-23 03:36:22,680 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2021-11-23 03:36:22,680 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2021-11-23 03:36:22,681 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2021-11-23 03:36:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:36:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 03:36:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 03:36:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:36:22,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:36:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 03:36:22,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 03:36:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 03:36:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 03:36:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:36:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:36:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:36:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:36:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:36:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:36:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2021-11-23 03:36:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2021-11-23 03:36:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-23 03:36:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-23 03:36:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 03:36:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 03:36:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:36:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:36:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:36:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:36:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:36:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:36:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:36:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:36:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:36:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:36:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:36:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:36:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2021-11-23 03:36:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2021-11-23 03:36:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:36:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:36:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:36:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:36:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-23 03:36:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-23 03:36:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 03:36:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 03:36:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2021-11-23 03:36:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2021-11-23 03:36:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:36:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:36:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-23 03:36:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2021-11-23 03:36:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2021-11-23 03:36:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2021-11-23 03:36:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:36:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:36:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2021-11-23 03:36:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2021-11-23 03:36:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2021-11-23 03:36:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2021-11-23 03:36:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 03:36:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 03:36:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2021-11-23 03:36:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2021-11-23 03:36:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2021-11-23 03:36:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2021-11-23 03:36:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:36:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:36:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:36:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:36:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2021-11-23 03:36:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2021-11-23 03:36:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2021-11-23 03:36:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2021-11-23 03:36:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 03:36:22,702 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 03:36:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:36:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2021-11-23 03:36:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2021-11-23 03:36:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 03:36:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 03:36:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:36:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 03:36:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 03:36:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 03:36:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 03:36:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2021-11-23 03:36:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2021-11-23 03:36:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:36:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2021-11-23 03:36:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2021-11-23 03:36:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2021-11-23 03:36:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2021-11-23 03:36:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:36:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:36:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2021-11-23 03:36:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2021-11-23 03:36:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:36:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:36:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-23 03:36:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-23 03:36:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2021-11-23 03:36:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2021-11-23 03:36:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:36:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:36:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 03:36:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 03:36:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2021-11-23 03:36:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2021-11-23 03:36:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 03:36:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 03:36:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2021-11-23 03:36:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2021-11-23 03:36:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2021-11-23 03:36:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2021-11-23 03:36:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:36:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:36:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:36:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:36:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 03:36:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 03:36:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:36:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:36:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:36:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:36:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:36:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2021-11-23 03:36:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2021-11-23 03:36:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:36:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:36:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2021-11-23 03:36:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2021-11-23 03:36:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2021-11-23 03:36:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2021-11-23 03:36:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:36:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:36:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2021-11-23 03:36:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2021-11-23 03:36:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 03:36:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 03:36:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:36:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:36:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 03:36:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 03:36:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:36:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:36:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 03:36:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 03:36:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2021-11-23 03:36:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2021-11-23 03:36:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 03:36:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 03:36:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2021-11-23 03:36:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2021-11-23 03:36:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:36:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:36:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:36:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2021-11-23 03:36:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2021-11-23 03:36:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:36:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:36:23,889 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:36:23,893 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:36:25,268 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:36:33,334 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:36:33,477 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:36:36,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:36:36,619 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:36:36,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:36 BoogieIcfgContainer [2021-11-23 03:36:36,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:36:36,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:36:36,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:36:36,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:36:36,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:36:15" (1/3) ... [2021-11-23 03:36:36,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b788b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:36, skipping insertion in model container [2021-11-23 03:36:36,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:36:21" (2/3) ... [2021-11-23 03:36:36,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b788b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:36:36, skipping insertion in model container [2021-11-23 03:36:36,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:36:36" (3/3) ... [2021-11-23 03:36:36,634 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2021-11-23 03:36:36,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:36:36,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:36:36,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:36:36,724 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:36:36,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:36:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 2561 states, 1523 states have (on average 1.3545633617859487) internal successors, (2063), 1622 states have internal predecessors, (2063), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 863 states have call predecessors, (907), 907 states have call successors, (907) [2021-11-23 03:36:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-23 03:36:36,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:36,828 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:36,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:36,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1599478790, now seen corresponding path program 1 times [2021-11-23 03:36:36,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:36,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916101737] [2021-11-23 03:36:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:36,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:36:37,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:37,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916101737] [2021-11-23 03:36:37,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916101737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:37,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:37,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:37,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168991801] [2021-11-23 03:36:37,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:37,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:37,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:37,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:37,768 INFO L87 Difference]: Start difference. First operand has 2561 states, 1523 states have (on average 1.3545633617859487) internal successors, (2063), 1622 states have internal predecessors, (2063), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 863 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) [2021-11-23 03:36:43,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:44,220 INFO L93 Difference]: Finished difference Result 7403 states and 11260 transitions. [2021-11-23 03:36:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:44,225 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 [2021-11-23 03:36:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:44,311 INFO L225 Difference]: With dead ends: 7403 [2021-11-23 03:36:44,311 INFO L226 Difference]: Without dead ends: 4858 [2021-11-23 03:36:44,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:44,348 INFO L933 BasicCegarLoop]: 4275 mSDtfsCounter, 3515 mSDsluCounter, 3825 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 7683 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:44,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3515 Valid, 7683 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 875 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 03:36:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-11-23 03:36:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4845. [2021-11-23 03:36:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 2879 states have (on average 1.3459534560611324) internal successors, (3875), 3064 states have internal predecessors, (3875), 1724 states have call successors, (1724), 241 states have call predecessors, (1724), 240 states have return successors, (1721), 1638 states have call predecessors, (1721), 1721 states have call successors, (1721) [2021-11-23 03:36:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 7320 transitions. [2021-11-23 03:36:45,032 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 7320 transitions. Word has length 150 [2021-11-23 03:36:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:45,036 INFO L470 AbstractCegarLoop]: Abstraction has 4845 states and 7320 transitions. [2021-11-23 03:36:45,040 INFO L471 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) [2021-11-23 03:36:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 7320 transitions. [2021-11-23 03:36:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 03:36:45,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:45,068 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:45,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:36:45,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:45,072 INFO L85 PathProgramCache]: Analyzing trace with hash 606345749, now seen corresponding path program 1 times [2021-11-23 03:36:45,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:45,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31085001] [2021-11-23 03:36:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:45,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-11-23 03:36:45,768 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:45,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31085001] [2021-11-23 03:36:45,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31085001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:45,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:45,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:36:45,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912681774] [2021-11-23 03:36:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:45,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:36:45,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:36:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:45,773 INFO L87 Difference]: Start difference. First operand 4845 states and 7320 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) [2021-11-23 03:36:51,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:36:52,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:52,391 INFO L93 Difference]: Finished difference Result 10695 states and 16180 transitions. [2021-11-23 03:36:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:36:52,392 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 [2021-11-23 03:36:52,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:52,459 INFO L225 Difference]: With dead ends: 10695 [2021-11-23 03:36:52,459 INFO L226 Difference]: Without dead ends: 5877 [2021-11-23 03:36:52,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:36:52,494 INFO L933 BasicCegarLoop]: 4000 mSDtfsCounter, 2522 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:52,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2522 Valid, 7385 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 903 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 03:36:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5877 states. [2021-11-23 03:36:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5877 to 5870. [2021-11-23 03:36:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5870 states, 3539 states have (on average 1.3520768578694546) internal successors, (4785), 3752 states have internal predecessors, (4785), 2041 states have call successors, (2041), 290 states have call predecessors, (2041), 288 states have return successors, (2038), 1941 states have call predecessors, (2038), 2038 states have call successors, (2038) [2021-11-23 03:36:52,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5870 states to 5870 states and 8864 transitions. [2021-11-23 03:36:52,997 INFO L78 Accepts]: Start accepts. Automaton has 5870 states and 8864 transitions. Word has length 163 [2021-11-23 03:36:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:53,000 INFO L470 AbstractCegarLoop]: Abstraction has 5870 states and 8864 transitions. [2021-11-23 03:36:53,001 INFO L471 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) [2021-11-23 03:36:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5870 states and 8864 transitions. [2021-11-23 03:36:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-23 03:36:53,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:53,015 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:36:53,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:36:53,018 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -913755738, now seen corresponding path program 1 times [2021-11-23 03:36:53,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:53,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549512267] [2021-11-23 03:36:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:53,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2021-11-23 03:36:53,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:53,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549512267] [2021-11-23 03:36:53,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549512267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:36:53,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:36:53,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:36:53,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845805023] [2021-11-23 03:36:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:36:53,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:36:53,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:36:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:36:53,467 INFO L87 Difference]: Start difference. First operand 5870 states and 8864 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) [2021-11-23 03:36:58,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:00,869 INFO L93 Difference]: Finished difference Result 9918 states and 14960 transitions. [2021-11-23 03:37:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:37:00,870 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 [2021-11-23 03:37:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:00,963 INFO L225 Difference]: With dead ends: 9918 [2021-11-23 03:37:00,963 INFO L226 Difference]: Without dead ends: 9895 [2021-11-23 03:37:00,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:00,974 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 3537 mSDsluCounter, 8500 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3537 SdHoareTripleChecker+Valid, 11912 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:00,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3537 Valid, 11912 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1289 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-23 03:37:00,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9895 states. [2021-11-23 03:37:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9895 to 9882. [2021-11-23 03:37:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9882 states, 5946 states have (on average 1.3491422805247224) internal successors, (8022), 6301 states have internal predecessors, (8022), 3441 states have call successors, (3441), 495 states have call predecessors, (3441), 493 states have return successors, (3438), 3277 states have call predecessors, (3438), 3438 states have call successors, (3438) [2021-11-23 03:37:01,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9882 states to 9882 states and 14901 transitions. [2021-11-23 03:37:01,783 INFO L78 Accepts]: Start accepts. Automaton has 9882 states and 14901 transitions. Word has length 192 [2021-11-23 03:37:01,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:01,784 INFO L470 AbstractCegarLoop]: Abstraction has 9882 states and 14901 transitions. [2021-11-23 03:37:01,785 INFO L471 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) [2021-11-23 03:37:01,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9882 states and 14901 transitions. [2021-11-23 03:37:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-23 03:37:01,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:01,815 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:01,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:37:01,815 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash -443860512, now seen corresponding path program 1 times [2021-11-23 03:37:01,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:01,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649560856] [2021-11-23 03:37:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:01,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-11-23 03:37:02,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649560856] [2021-11-23 03:37:02,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649560856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:02,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:02,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:02,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97949268] [2021-11-23 03:37:02,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:02,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:02,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:02,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:02,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:02,216 INFO L87 Difference]: Start difference. First operand 9882 states and 14901 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) [2021-11-23 03:37:07,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:09,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:09,002 INFO L93 Difference]: Finished difference Result 21476 states and 32400 transitions. [2021-11-23 03:37:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:09,006 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 [2021-11-23 03:37:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:09,126 INFO L225 Difference]: With dead ends: 21476 [2021-11-23 03:37:09,127 INFO L226 Difference]: Without dead ends: 13259 [2021-11-23 03:37:09,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:09,179 INFO L933 BasicCegarLoop]: 5674 mSDtfsCounter, 2526 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 9057 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:09,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2526 Valid, 9057 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 03:37:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2021-11-23 03:37:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 13251. [2021-11-23 03:37:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 7993 states have (on average 1.349931189791067) internal successors, (10790), 8463 states have internal predecessors, (10790), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4375 states have call predecessors, (4590), 4590 states have call successors, (4590) [2021-11-23 03:37:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 19973 transitions. [2021-11-23 03:37:10,383 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 19973 transitions. Word has length 210 [2021-11-23 03:37:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 13251 states and 19973 transitions. [2021-11-23 03:37:10,386 INFO L471 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) [2021-11-23 03:37:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 19973 transitions. [2021-11-23 03:37:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-23 03:37:10,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:10,437 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:10,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:37:10,437 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1032084219, now seen corresponding path program 1 times [2021-11-23 03:37:10,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:10,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880975069] [2021-11-23 03:37:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:10,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2021-11-23 03:37:10,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:10,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880975069] [2021-11-23 03:37:10,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880975069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:10,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:10,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:37:10,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036663773] [2021-11-23 03:37:10,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:10,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:37:11,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:11,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:37:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:37:11,046 INFO L87 Difference]: Start difference. First operand 13251 states and 19973 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) [2021-11-23 03:37:17,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:20,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:20,292 INFO L93 Difference]: Finished difference Result 15446 states and 23537 transitions. [2021-11-23 03:37:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:37:20,298 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 [2021-11-23 03:37:20,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:20,387 INFO L225 Difference]: With dead ends: 15446 [2021-11-23 03:37:20,388 INFO L226 Difference]: Without dead ends: 15444 [2021-11-23 03:37:20,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:20,398 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 4578 mSDsluCounter, 9280 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 166 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 13315 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:20,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 13315 Invalid, 1796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [166 Valid, 1629 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2021-11-23 03:37:20,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15444 states. [2021-11-23 03:37:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15444 to 13251. [2021-11-23 03:37:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 7993 states have (on average 1.3498060803202803) internal successors, (10789), 8463 states have internal predecessors, (10789), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4375 states have call predecessors, (4590), 4590 states have call successors, (4590) [2021-11-23 03:37:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 19972 transitions. [2021-11-23 03:37:21,706 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 19972 transitions. Word has length 272 [2021-11-23 03:37:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:21,711 INFO L470 AbstractCegarLoop]: Abstraction has 13251 states and 19972 transitions. [2021-11-23 03:37:21,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-23 03:37:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 19972 transitions. [2021-11-23 03:37:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-23 03:37:21,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:21,783 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:21,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:37:21,784 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:21,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1178571194, now seen corresponding path program 1 times [2021-11-23 03:37:21,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:21,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860406345] [2021-11-23 03:37:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:21,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2021-11-23 03:37:22,247 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860406345] [2021-11-23 03:37:22,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860406345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:22,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:22,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:22,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836106887] [2021-11-23 03:37:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:22,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:22,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:22,250 INFO L87 Difference]: Start difference. First operand 13251 states and 19972 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) [2021-11-23 03:37:27,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:27,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:27,871 INFO L93 Difference]: Finished difference Result 21250 states and 32299 transitions. [2021-11-23 03:37:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:27,872 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 [2021-11-23 03:37:27,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:27,958 INFO L225 Difference]: With dead ends: 21250 [2021-11-23 03:37:27,958 INFO L226 Difference]: Without dead ends: 15357 [2021-11-23 03:37:27,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:27,997 INFO L933 BasicCegarLoop]: 4116 mSDtfsCounter, 513 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:27,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 7627 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 937 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 03:37:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15357 states. [2021-11-23 03:37:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15357 to 13259. [2021-11-23 03:37:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 8001 states have (on average 1.349456317960255) internal successors, (10797), 8471 states have internal predecessors, (10797), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4375 states have call predecessors, (4590), 4590 states have call successors, (4590) [2021-11-23 03:37:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 19980 transitions. [2021-11-23 03:37:29,116 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 19980 transitions. Word has length 413 [2021-11-23 03:37:29,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:29,118 INFO L470 AbstractCegarLoop]: Abstraction has 13259 states and 19980 transitions. [2021-11-23 03:37:29,118 INFO L471 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) [2021-11-23 03:37:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 19980 transitions. [2021-11-23 03:37:29,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-23 03:37:29,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:29,187 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:29,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:37:29,188 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:29,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:29,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1170876873, now seen corresponding path program 1 times [2021-11-23 03:37:29,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:29,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845047611] [2021-11-23 03:37:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:29,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-11-23 03:37:29,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:29,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845047611] [2021-11-23 03:37:29,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845047611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:29,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:37:29,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:37:29,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702932060] [2021-11-23 03:37:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:29,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:29,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:29,790 INFO L87 Difference]: Start difference. First operand 13259 states and 19980 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) [2021-11-23 03:37:34,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:36,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:37,062 INFO L93 Difference]: Finished difference Result 20379 states and 30861 transitions. [2021-11-23 03:37:37,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:37,062 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 [2021-11-23 03:37:37,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:37,139 INFO L225 Difference]: With dead ends: 20379 [2021-11-23 03:37:37,140 INFO L226 Difference]: Without dead ends: 14470 [2021-11-23 03:37:37,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:37:37,164 INFO L933 BasicCegarLoop]: 4023 mSDtfsCounter, 565 mSDsluCounter, 3905 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 7511 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:37,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 7511 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 955 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 03:37:37,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14470 states. [2021-11-23 03:37:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 13458. [2021-11-23 03:37:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13458 states, 8143 states have (on average 1.3508534937983545) internal successors, (11000), 8620 states have internal predecessors, (11000), 4650 states have call successors, (4650), 666 states have call predecessors, (4650), 663 states have return successors, (4647), 4431 states have call predecessors, (4647), 4647 states have call successors, (4647) [2021-11-23 03:37:38,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13458 states to 13458 states and 20297 transitions. [2021-11-23 03:37:38,254 INFO L78 Accepts]: Start accepts. Automaton has 13458 states and 20297 transitions. Word has length 428 [2021-11-23 03:37:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:38,256 INFO L470 AbstractCegarLoop]: Abstraction has 13458 states and 20297 transitions. [2021-11-23 03:37:38,256 INFO L471 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) [2021-11-23 03:37:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 13458 states and 20297 transitions. [2021-11-23 03:37:38,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-23 03:37:38,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:38,315 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1] [2021-11-23 03:37:38,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:37:38,316 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:38,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2078071760, now seen corresponding path program 1 times [2021-11-23 03:37:38,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:38,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973306251] [2021-11-23 03:37:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:38,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1390 trivial. 0 not checked. [2021-11-23 03:37:38,889 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:38,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973306251] [2021-11-23 03:37:38,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973306251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:37:38,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834735102] [2021-11-23 03:37:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:38,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:37:38,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:37:38,898 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:37:38,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:37:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:41,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 7617 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:37:41,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2021-11-23 03:37:41,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:37:41,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834735102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:41,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:37:41,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:37:41,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543978901] [2021-11-23 03:37:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:41,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:41,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:41,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:41,966 INFO L87 Difference]: Start difference. First operand 13458 states and 20297 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-23 03:37:47,133 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:48,097 INFO L93 Difference]: Finished difference Result 20694 states and 31364 transitions. [2021-11-23 03:37:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 432 [2021-11-23 03:37:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:48,189 INFO L225 Difference]: With dead ends: 20694 [2021-11-23 03:37:48,189 INFO L226 Difference]: Without dead ends: 14616 [2021-11-23 03:37:48,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:48,222 INFO L933 BasicCegarLoop]: 4225 mSDtfsCounter, 528 mSDsluCounter, 4000 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 7808 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:48,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 7808 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 03:37:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14616 states. [2021-11-23 03:37:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14616 to 13596. [2021-11-23 03:37:49,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13596 states, 8246 states have (on average 1.3507154984234782) internal successors, (11138), 8728 states have internal predecessors, (11138), 4685 states have call successors, (4685), 666 states have call predecessors, (4685), 663 states have return successors, (4682), 4465 states have call predecessors, (4682), 4682 states have call successors, (4682) [2021-11-23 03:37:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13596 states to 13596 states and 20505 transitions. [2021-11-23 03:37:49,387 INFO L78 Accepts]: Start accepts. Automaton has 13596 states and 20505 transitions. Word has length 432 [2021-11-23 03:37:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:49,389 INFO L470 AbstractCegarLoop]: Abstraction has 13596 states and 20505 transitions. [2021-11-23 03:37:49,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-23 03:37:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 13596 states and 20505 transitions. [2021-11-23 03:37:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2021-11-23 03:37:49,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:49,446 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:49,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:49,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:37:49,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1416015219, now seen corresponding path program 1 times [2021-11-23 03:37:49,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:49,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684698931] [2021-11-23 03:37:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:49,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:37:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2021-11-23 03:37:50,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:37:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684698931] [2021-11-23 03:37:50,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684698931] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:37:50,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255523901] [2021-11-23 03:37:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:50,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:37:50,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:37:50,167 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:37:50,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:37:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:37:52,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 7545 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:37:52,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:37:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2021-11-23 03:37:52,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:37:52,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255523901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:37:52,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:37:52,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:37:52,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042522758] [2021-11-23 03:37:52,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:37:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:37:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:37:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:37:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:37:52,896 INFO L87 Difference]: Start difference. First operand 13596 states and 20505 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) [2021-11-23 03:37:57,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:37:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:37:58,574 INFO L93 Difference]: Finished difference Result 20932 states and 31726 transitions. [2021-11-23 03:37:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:37:58,581 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 [2021-11-23 03:37:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:37:58,651 INFO L225 Difference]: With dead ends: 20932 [2021-11-23 03:37:58,652 INFO L226 Difference]: Without dead ends: 14737 [2021-11-23 03:37:58,680 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:37:58,681 INFO L933 BasicCegarLoop]: 4220 mSDtfsCounter, 549 mSDsluCounter, 3972 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:37:58,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 7776 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1003 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 03:37:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2021-11-23 03:37:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 13714. [2021-11-23 03:37:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13714 states, 8333 states have (on average 1.3517340693627744) internal successors, (11264), 8820 states have internal predecessors, (11264), 4716 states have call successors, (4716), 666 states have call predecessors, (4716), 663 states have return successors, (4713), 4495 states have call predecessors, (4713), 4713 states have call successors, (4713) [2021-11-23 03:37:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13714 states to 13714 states and 20693 transitions. [2021-11-23 03:37:59,643 INFO L78 Accepts]: Start accepts. Automaton has 13714 states and 20693 transitions. Word has length 428 [2021-11-23 03:37:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:37:59,645 INFO L470 AbstractCegarLoop]: Abstraction has 13714 states and 20693 transitions. [2021-11-23 03:37:59,645 INFO L471 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) [2021-11-23 03:37:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 13714 states and 20693 transitions. [2021-11-23 03:37:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-11-23 03:37:59,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:37:59,689 INFO L514 BasicCegarLoop]: 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] [2021-11-23 03:37:59,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:37:59,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:37:59,906 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:37:59,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:37:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1893952043, now seen corresponding path program 1 times [2021-11-23 03:37:59,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:37:59,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291509450] [2021-11-23 03:37:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:37:59,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:38:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-23 03:38:00,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:38:00,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291509450] [2021-11-23 03:38:00,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291509450] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:38:00,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561781597] [2021-11-23 03:38:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:38:00,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:38:00,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:38:00,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:38:00,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb72ac61-c792-4e4e-83e5-f90b1354cb67/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:38:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:38:02,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 7563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:38:02,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:38:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 129 proven. 1 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2021-11-23 03:38:03,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:38:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2021-11-23 03:38:04,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561781597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:38:04,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1940470561] [2021-11-23 03:38:04,152 INFO L159 IcfgInterpreter]: Started Sifa with 224 locations of interest [2021-11-23 03:38:04,152 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:38:04,160 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:38:04,165 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:38:04,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs