./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.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_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/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_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/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_f41a0ffb-4841-4152-9812-5e95325a57c5/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 a5840d200f9b01baa7c7c0720decd9e57e03b81f3e57be2769ef74cbe72cbe99 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:04:53,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:04:53,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:04:53,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:04:53,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:04:53,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:04:53,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:04:53,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:04:53,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:04:53,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:04:53,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:04:53,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:04:53,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:04:53,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:04:53,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:04:53,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:04:53,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:04:53,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:04:53,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:04:53,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:04:53,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:04:53,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:04:53,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:04:53,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:04:53,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:04:53,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:04:53,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:04:53,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:04:53,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:04:53,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:04:53,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:04:53,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:04:53,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:04:53,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:04:53,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:04:53,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:04:53,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:04:53,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:04:53,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:04:53,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:04:53,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:04:53,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:04:53,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:04:53,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:04:53,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:04:53,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:04:53,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:04:53,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:04:53,946 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:04:53,946 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:04:53,947 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:04:53,947 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:04:53,947 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:04:53,947 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:04:53,947 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:04:53,948 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:04:53,948 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:04:53,948 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:04:53,948 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:04:53,948 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:04:53,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:04:53,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:04:53,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:04:53,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:04:53,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:04:53,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:04:53,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:04:53,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:04:53,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:04:53,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:04:53,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:04:53,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:04:53,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:04:53,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:04:53,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:04:53,952 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:04:53,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:04:53,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:04:53,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:04:53,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:04:53,953 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_f41a0ffb-4841-4152-9812-5e95325a57c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5840d200f9b01baa7c7c0720decd9e57e03b81f3e57be2769ef74cbe72cbe99 [2021-11-23 03:04:54,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:04:54,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:04:54,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:04:54,251 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:04:54,251 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:04:54,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-23 03:04:54,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/data/cbe972a6d/61ddbb4e7efd422cb67a9eb91bd621a0/FLAG881ea5e72 [2021-11-23 03:04:55,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:04:55,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-23 03:04:55,668 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/data/cbe972a6d/61ddbb4e7efd422cb67a9eb91bd621a0/FLAG881ea5e72 [2021-11-23 03:04:56,118 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/data/cbe972a6d/61ddbb4e7efd422cb67a9eb91bd621a0 [2021-11-23 03:04:56,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:04:56,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:04:56,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:04:56,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:04:56,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:04:56,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:56" (1/1) ... [2021-11-23 03:04:56,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c8415ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:04:56, skipping insertion in model container [2021-11-23 03:04:56,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:04:56" (1/1) ... [2021-11-23 03:04:56,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:04:56,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:05:05,070 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899162,899175] [2021-11-23 03:05:05,073 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899309,899322] [2021-11-23 03:05:05,073 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899448,899461] [2021-11-23 03:05:05,074 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899606,899619] [2021-11-23 03:05:05,107 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:05,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:05:06,423 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899162,899175] [2021-11-23 03:05:06,424 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899309,899322] [2021-11-23 03:05:06,424 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899448,899461] [2021-11-23 03:05:06,425 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_f41a0ffb-4841-4152-9812-5e95325a57c5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899606,899619] [2021-11-23 03:05:06,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:05:06,973 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:05:06,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06 WrapperNode [2021-11-23 03:05:06,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:05:06,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:05:06,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:05:06,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:05:06,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:07,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:08,438 INFO L137 Inliner]: procedures = 712, calls = 16177, calls flagged for inlining = 391, calls inlined = 342, statements flattened = 29264 [2021-11-23 03:05:08,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:05:08,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:05:08,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:05:08,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:05:08,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:08,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:08,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:08,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:09,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:09,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:09,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:09,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:05:09,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:05:09,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:05:09,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:05:09,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (1/1) ... [2021-11-23 03:05:09,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:05:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:05:09,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:05:09,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:05:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:05:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:05:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-23 03:05:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-23 03:05:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-23 03:05:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-23 03:05:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-23 03:05:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-23 03:05:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-23 03:05:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-23 03:05:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-23 03:05:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-23 03:05:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-23 03:05:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-23 03:05:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:05:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:05:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-23 03:05:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-23 03:05:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-23 03:05:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-23 03:05:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:05:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:05:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-23 03:05:09,980 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-23 03:05:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-23 03:05:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-23 03:05:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:05:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:05:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-23 03:05:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-23 03:05:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-23 03:05:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-23 03:05:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-23 03:05:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-23 03:05:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:05:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:05:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-23 03:05:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-23 03:05:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-23 03:05:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-23 03:05:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-23 03:05:09,984 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-23 03:05:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 03:05:09,985 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 03:05:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-23 03:05:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-23 03:05:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:05:09,986 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:05:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:05:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:05:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-23 03:05:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-23 03:05:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-23 03:05:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-23 03:05:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 03:05:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 03:05:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-23 03:05:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-23 03:05:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-23 03:05:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-23 03:05:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:05:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:05:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-23 03:05:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-23 03:05:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-23 03:05:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-23 03:05:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-23 03:05:09,990 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-23 03:05:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-23 03:05:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-23 03:05:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 03:05:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 03:05:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:05:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:05:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:05:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:05:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 03:05:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 03:05:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:05:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:05:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:05:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:05:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:05:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:05:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-23 03:05:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-23 03:05:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:05:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 03:05:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 03:05:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-23 03:05:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-23 03:05:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-23 03:05:09,996 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-23 03:05:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-23 03:05:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-23 03:05:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-23 03:05:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-23 03:05:09,997 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-23 03:05:09,997 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-23 03:05:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-23 03:05:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-23 03:05:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:05:09,998 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:05:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-23 03:05:09,999 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-23 03:05:10,000 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-23 03:05:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-23 03:05:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-23 03:05:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-23 03:05:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:05:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:05:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:05:10,005 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:05:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-23 03:05:10,005 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-23 03:05:10,011 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-23 03:05:10,011 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-23 03:05:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:05:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-23 03:05:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-23 03:05:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-23 03:05:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-23 03:05:10,012 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-23 03:05:10,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-23 03:05:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-23 03:05:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-23 03:05:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:05:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:05:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-23 03:05:10,013 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-23 03:05:10,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:05:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:05:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:05:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-23 03:05:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-23 03:05:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:05:10,014 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:05:10,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:05:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-23 03:05:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-23 03:05:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-23 03:05:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-23 03:05:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-23 03:05:10,015 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-23 03:05:10,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:05:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:05:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-23 03:05:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-23 03:05:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-23 03:05:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-23 03:05:10,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:05:10,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:05:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-23 03:05:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-23 03:05:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-23 03:05:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-23 03:05:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:05:10,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:05:10,017 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-23 03:05:10,018 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-23 03:05:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:05:10,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:05:10,018 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-23 03:05:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-23 03:05:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-23 03:05:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-23 03:05:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 03:05:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 03:05:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:05:10,019 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:05:10,019 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-23 03:05:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-23 03:05:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-23 03:05:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-23 03:05:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-23 03:05:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-23 03:05:10,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-23 03:05:10,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-23 03:05:10,021 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-23 03:05:10,022 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-23 03:05:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:05:10,022 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-23 03:05:10,022 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-23 03:05:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-23 03:05:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-23 03:05:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:05:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-23 03:05:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-23 03:05:10,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:05:10,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:05:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:05:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:05:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:05:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-23 03:05:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-23 03:05:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:05:10,024 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-23 03:05:10,024 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-23 03:05:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:05:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:05:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-23 03:05:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-23 03:05:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-23 03:05:10,025 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-23 03:05:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-23 03:05:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-23 03:05:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-23 03:05:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-23 03:05:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 03:05:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 03:05:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-23 03:05:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-23 03:05:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-23 03:05:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-23 03:05:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-23 03:05:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-23 03:05:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-23 03:05:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-23 03:05:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-23 03:05:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-23 03:05:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:05:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:05:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-23 03:05:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-23 03:05:10,028 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 03:05:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 03:05:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-23 03:05:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-23 03:05:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-23 03:05:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-23 03:05:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:05:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:05:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-23 03:05:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-23 03:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-23 03:05:10,034 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-23 03:05:10,034 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-23 03:05:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-23 03:05:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-23 03:05:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-23 03:05:10,035 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-23 03:05:10,035 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-23 03:05:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-23 03:05:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-23 03:05:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-23 03:05:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-23 03:05:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 03:05:10,037 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 03:05:10,037 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:05:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:05:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-23 03:05:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-23 03:05:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-23 03:05:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-23 03:05:10,038 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-23 03:05:10,038 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-23 03:05:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-23 03:05:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-23 03:05:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:05:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:05:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-23 03:05:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-23 03:05:10,039 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-23 03:05:10,039 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-23 03:05:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-23 03:05:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-23 03:05:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-23 03:05:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-23 03:05:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-23 03:05:10,040 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-23 03:05:10,040 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:05:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:05:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-23 03:05:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-23 03:05:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:05:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:05:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:05:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:05:10,041 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-23 03:05:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-23 03:05:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 03:05:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-23 03:05:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-23 03:05:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-23 03:05:10,042 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-23 03:05:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-23 03:05:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:05:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:05:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:05:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-23 03:05:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-23 03:05:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:05:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:05:10,043 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-23 03:05:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-23 03:05:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-23 03:05:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-23 03:05:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-23 03:05:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-23 03:05:10,044 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-23 03:05:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-23 03:05:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:05:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:05:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:05:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:05:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-23 03:05:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-23 03:05:10,045 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-23 03:05:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-23 03:05:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-23 03:05:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-23 03:05:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-23 03:05:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-23 03:05:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:05:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:05:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-23 03:05:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-23 03:05:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-23 03:05:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-23 03:05:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-23 03:05:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-23 03:05:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-23 03:05:10,047 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-23 03:05:10,047 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-23 03:05:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-23 03:05:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-23 03:05:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-23 03:05:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-23 03:05:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-23 03:05:10,048 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 03:05:10,048 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 03:05:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 03:05:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 03:05:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 03:05:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 03:05:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:05:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:05:10,049 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:05:10,049 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-23 03:05:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-23 03:05:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 03:05:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 03:05:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-23 03:05:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-23 03:05:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:05:10,050 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-23 03:05:10,050 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-23 03:05:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-23 03:05:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-23 03:05:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-23 03:05:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-23 03:05:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-23 03:05:10,051 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-23 03:05:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-23 03:05:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-23 03:05:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-23 03:05:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-23 03:05:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:05:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-23 03:05:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-23 03:05:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-23 03:05:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-23 03:05:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-23 03:05:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-23 03:05:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-23 03:05:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-23 03:05:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-23 03:05:10,053 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-23 03:05:10,053 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:05:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:05:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-23 03:05:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-23 03:05:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:05:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:05:10,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-23 03:05:10,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-23 03:05:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:05:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:05:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-23 03:05:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-23 03:05:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-23 03:05:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-23 03:05:10,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 03:05:10,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 03:05:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-23 03:05:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-23 03:05:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-23 03:05:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-23 03:05:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-23 03:05:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-23 03:05:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-23 03:05:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-23 03:05:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-23 03:05:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-23 03:05:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-23 03:05:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-23 03:05:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-23 03:05:10,057 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-23 03:05:10,057 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-23 03:05:10,058 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-23 03:05:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 03:05:10,058 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 03:05:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:05:10,058 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:05:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:05:10,058 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:05:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-23 03:05:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-23 03:05:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-23 03:05:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-23 03:05:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-23 03:05:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-23 03:05:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-23 03:05:10,060 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-23 03:05:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-23 03:05:10,060 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-23 03:05:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-23 03:05:10,060 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-23 03:05:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:05:10,060 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:05:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-23 03:05:10,061 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-23 03:05:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-23 03:05:10,061 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-23 03:05:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 03:05:10,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-23 03:05:10,061 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:05:10,061 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:05:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-23 03:05:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-23 03:05:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-23 03:05:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-23 03:05:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_20 [2021-11-23 03:05:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_20 [2021-11-23 03:05:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:05:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-23 03:05:10,063 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-23 03:05:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:05:10,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:05:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-23 03:05:10,063 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-23 03:05:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-23 03:05:10,063 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-23 03:05:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-23 03:05:10,064 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-23 03:05:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:05:10,064 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:05:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-23 03:05:10,064 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-23 03:05:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 03:05:10,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 03:05:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-23 03:05:10,065 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-23 03:05:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-23 03:05:10,065 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-23 03:05:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 03:05:10,065 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 03:05:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-23 03:05:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-23 03:05:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-23 03:05:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-23 03:05:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-23 03:05:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-23 03:05:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-23 03:05:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-23 03:05:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-23 03:05:10,067 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-23 03:05:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-23 03:05:10,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-23 03:05:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-23 03:05:10,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-23 03:05:10,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-23 03:05:10,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-23 03:05:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:05:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:05:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-23 03:05:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-23 03:05:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 03:05:10,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-23 03:05:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:05:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:05:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-23 03:05:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-23 03:05:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-23 03:05:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-23 03:05:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 03:05:10,069 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 03:05:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-23 03:05:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-23 03:05:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:05:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:05:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 03:05:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 03:05:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 03:05:10,070 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 03:05:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 03:05:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:05:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-23 03:05:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-23 03:05:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-23 03:05:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-23 03:05:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:05:10,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:05:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 03:05:12,361 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:05:12,369 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:05:13,695 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:06:19,920 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:06:28,626 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:06:28,627 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-23 03:06:28,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:28 BoogieIcfgContainer [2021-11-23 03:06:28,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:06:28,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:06:28,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:06:28,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:06:28,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:04:56" (1/3) ... [2021-11-23 03:06:28,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275be216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:28, skipping insertion in model container [2021-11-23 03:06:28,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:06" (2/3) ... [2021-11-23 03:06:28,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275be216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:28, skipping insertion in model container [2021-11-23 03:06:28,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:28" (3/3) ... [2021-11-23 03:06:28,655 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-23 03:06:28,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:06:28,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:06:28,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:06:28,747 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 03:06:28,748 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:06:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 6545 states, 4181 states have (on average 1.3360440086103802) internal successors, (5586), 4288 states have internal predecessors, (5586), 2122 states have call successors, (2122), 242 states have call predecessors, (2122), 241 states have return successors, (2118), 2105 states have call predecessors, (2118), 2118 states have call successors, (2118) [2021-11-23 03:06:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:06:28,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:06:28,915 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 03:06:28,916 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 03:06:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:06:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1382324443, now seen corresponding path program 1 times [2021-11-23 03:06:28,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:06:28,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779044109] [2021-11-23 03:06:28,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:06:28,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:06:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:06:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 03:06:30,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:06:30,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779044109] [2021-11-23 03:06:30,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779044109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:06:30,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:06:30,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:06:30,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357847617] [2021-11-23 03:06:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:06:30,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:06:30,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:06:30,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:06:30,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:06:30,714 INFO L87 Difference]: Start difference. First operand has 6545 states, 4181 states have (on average 1.3360440086103802) internal successors, (5586), 4288 states have internal predecessors, (5586), 2122 states have call successors, (2122), 242 states have call predecessors, (2122), 241 states have return successors, (2118), 2105 states have call predecessors, (2118), 2118 states have call successors, (2118) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:06:34,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:44,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:46,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:49,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:06:54,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:02,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:04,671 WARN L534 Checker$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 03:07:07,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:09,727 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:09,996 INFO L93 Difference]: Finished difference Result 17301 states and 25972 transitions. [2021-11-23 03:07:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:07:09,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2021-11-23 03:07:09,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:10,138 INFO L225 Difference]: With dead ends: 17301 [2021-11-23 03:07:10,139 INFO L226 Difference]: Without dead ends: 10728 [2021-11-23 03:07:10,211 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 03:07:10,214 INFO L933 BasicCegarLoop]: 10867 mSDtfsCounter, 6294 mSDsluCounter, 21475 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6298 SdHoareTripleChecker+Valid, 30704 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:10,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6298 Valid, 30704 Invalid, 2494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2485 Invalid, 8 Unknown, 0 Unchecked, 38.4s Time] [2021-11-23 03:07:10,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10728 states. [2021-11-23 03:07:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10728 to 10720. [2021-11-23 03:07:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 6817 states have (on average 1.3281502127035352) internal successors, (9054), 6976 states have internal predecessors, (9054), 3477 states have call successors, (3477), 425 states have call predecessors, (3477), 424 states have return successors, (3477), 3460 states have call predecessors, (3477), 3475 states have call successors, (3477) [2021-11-23 03:07:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 16008 transitions. [2021-11-23 03:07:11,706 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 16008 transitions. Word has length 34 [2021-11-23 03:07:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:11,707 INFO L470 AbstractCegarLoop]: Abstraction has 10720 states and 16008 transitions. [2021-11-23 03:07:11,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:07:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 16008 transitions. [2021-11-23 03:07:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 03:07:11,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:11,712 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:07:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:07:11,713 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:11,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash -787865769, now seen corresponding path program 1 times [2021-11-23 03:07:11,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:11,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067007823] [2021-11-23 03:07:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:11,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-23 03:07:12,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067007823] [2021-11-23 03:07:12,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067007823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:12,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:12,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:07:12,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068558048] [2021-11-23 03:07:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:12,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:07:12,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:07:12,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:07:12,678 INFO L87 Difference]: Start difference. First operand 10720 states and 16008 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:07:16,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:26,258 WARN L534 Checker$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 03:07:28,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:30,450 WARN L534 Checker$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 03:07:35,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:42,760 WARN L534 Checker$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 03:07:44,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:47,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:49,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:51,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:07:52,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:52,041 INFO L93 Difference]: Finished difference Result 11048 states and 16539 transitions. [2021-11-23 03:07:52,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:07:52,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2021-11-23 03:07:52,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:52,137 INFO L225 Difference]: With dead ends: 11048 [2021-11-23 03:07:52,138 INFO L226 Difference]: Without dead ends: 11046 [2021-11-23 03:07:52,146 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 03:07:52,147 INFO L933 BasicCegarLoop]: 10904 mSDtfsCounter, 6612 mSDsluCounter, 21499 mSDsCounter, 0 mSdLazyCounter, 2548 mSolverCounterSat, 71 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6673 SdHoareTripleChecker+Valid, 30756 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2548 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:52,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6673 Valid, 30756 Invalid, 2629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2548 Invalid, 10 Unknown, 0 Unchecked, 38.9s Time] [2021-11-23 03:07:52,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2021-11-23 03:07:53,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 10720. [2021-11-23 03:07:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 6817 states have (on average 1.3280035206102392) internal successors, (9053), 6976 states have internal predecessors, (9053), 3477 states have call successors, (3477), 425 states have call predecessors, (3477), 424 states have return successors, (3477), 3460 states have call predecessors, (3477), 3475 states have call successors, (3477) [2021-11-23 03:07:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 16007 transitions. [2021-11-23 03:07:53,162 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 16007 transitions. Word has length 85 [2021-11-23 03:07:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:53,163 INFO L470 AbstractCegarLoop]: Abstraction has 10720 states and 16007 transitions. [2021-11-23 03:07:53,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-23 03:07:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 16007 transitions. [2021-11-23 03:07:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-23 03:07:53,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:53,188 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:53,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:07:53,188 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:53,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1392974238, now seen corresponding path program 1 times [2021-11-23 03:07:53,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:53,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121850248] [2021-11-23 03:07:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:53,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-23 03:07:54,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:54,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121850248] [2021-11-23 03:07:54,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121850248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:54,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:54,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:07:54,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258097519] [2021-11-23 03:07:54,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:54,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:07:54,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:54,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:07:54,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:07:54,407 INFO L87 Difference]: Start difference. First operand 10720 states and 16007 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:07:57,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:03,532 WARN L534 Checker$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 03:08:05,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:07,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:09,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:11,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:17,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:23,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:25,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:27,985 WARN L534 Checker$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 03:08:30,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:32,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:33,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:33,223 INFO L93 Difference]: Finished difference Result 15873 states and 23736 transitions. [2021-11-23 03:08:33,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:08:33,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 190 [2021-11-23 03:08:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:33,341 INFO L225 Difference]: With dead ends: 15873 [2021-11-23 03:08:33,341 INFO L226 Difference]: Without dead ends: 15871 [2021-11-23 03:08:33,352 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 03:08:33,353 INFO L933 BasicCegarLoop]: 10774 mSDtfsCounter, 7288 mSDsluCounter, 21454 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 83 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7349 SdHoareTripleChecker+Valid, 30595 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:33,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7349 Valid, 30595 Invalid, 2618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2526 Invalid, 9 Unknown, 0 Unchecked, 38.3s Time] [2021-11-23 03:08:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15871 states. [2021-11-23 03:08:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15871 to 15340. [2021-11-23 03:08:34,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 9768 states have (on average 1.3287264537264538) internal successors, (12979), 9990 states have internal predecessors, (12979), 4954 states have call successors, (4954), 617 states have call predecessors, (4954), 616 states have return successors, (4956), 4932 states have call predecessors, (4956), 4952 states have call successors, (4956) [2021-11-23 03:08:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 22889 transitions. [2021-11-23 03:08:34,628 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 22889 transitions. Word has length 190 [2021-11-23 03:08:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:34,631 INFO L470 AbstractCegarLoop]: Abstraction has 15340 states and 22889 transitions. [2021-11-23 03:08:34,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-23 03:08:34,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 22889 transitions. [2021-11-23 03:08:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-23 03:08:34,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:34,646 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:08:34,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:08:34,647 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:34,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1778137633, now seen corresponding path program 1 times [2021-11-23 03:08:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722512450] [2021-11-23 03:08:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:34,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-23 03:08:35,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722512450] [2021-11-23 03:08:35,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722512450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:35,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:35,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:08:35,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891490533] [2021-11-23 03:08:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:35,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:08:35,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:08:35,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:08:35,717 INFO L87 Difference]: Start difference. First operand 15340 states and 22889 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 03:08:38,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:44,445 WARN L534 Checker$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 03:08:46,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:08:48,606 WARN L534 Checker$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 03:08:55,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:03,661 WARN L534 Checker$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 03:09:09,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:09,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:09:09,588 INFO L93 Difference]: Finished difference Result 15383 states and 22942 transitions. [2021-11-23 03:09:09,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:09:09,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 243 [2021-11-23 03:09:09,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:09:09,696 INFO L225 Difference]: With dead ends: 15383 [2021-11-23 03:09:09,696 INFO L226 Difference]: Without dead ends: 15351 [2021-11-23 03:09:09,710 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 03:09:09,711 INFO L933 BasicCegarLoop]: 10597 mSDtfsCounter, 6859 mSDsluCounter, 21159 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6861 SdHoareTripleChecker+Valid, 30152 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:09:09,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6861 Valid, 30152 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2415 Invalid, 7 Unknown, 0 Unchecked, 33.5s Time] [2021-11-23 03:09:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15351 states. [2021-11-23 03:09:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15351 to 15316. [2021-11-23 03:09:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15316 states, 9756 states have (on average 1.3287207872078721) internal successors, (12963), 9975 states have internal predecessors, (12963), 4942 states have call successors, (4942), 617 states have call predecessors, (4942), 616 states have return successors, (4944), 4922 states have call predecessors, (4944), 4940 states have call successors, (4944) [2021-11-23 03:09:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15316 states to 15316 states and 22849 transitions. [2021-11-23 03:09:11,117 INFO L78 Accepts]: Start accepts. Automaton has 15316 states and 22849 transitions. Word has length 243 [2021-11-23 03:09:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:09:11,119 INFO L470 AbstractCegarLoop]: Abstraction has 15316 states and 22849 transitions. [2021-11-23 03:09:11,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-23 03:09:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15316 states and 22849 transitions. [2021-11-23 03:09:11,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-11-23 03:09:11,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:09:11,233 INFO L514 BasicCegarLoop]: trace histogram [14, 9, 9, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:11,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:09:11,233 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:09:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:09:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2007428456, now seen corresponding path program 1 times [2021-11-23 03:09:11,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:09:11,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848447438] [2021-11-23 03:09:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:09:11,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:09:11,933 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:09:11,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136577300] [2021-11-23 03:09:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:09:11,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:09:11,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:09:11,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:09:11,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:09:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:09:16,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 17733 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:09:16,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:09:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-23 03:09:17,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:09:17,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:09:17,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848447438] [2021-11-23 03:09:17,359 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:09:17,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136577300] [2021-11-23 03:09:17,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136577300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:09:17,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:09:17,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:09:17,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581866056] [2021-11-23 03:09:17,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:09:17,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:09:17,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:09:17,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:09:17,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:09:17,362 INFO L87 Difference]: Start difference. First operand 15316 states and 22849 transitions. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 3 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2021-11-23 03:09:20,125 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 03:09:26,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:28,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:30,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:34,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:40,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:41,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:43,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:46,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:09:46,667 INFO L93 Difference]: Finished difference Result 23103 states and 34649 transitions. [2021-11-23 03:09:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:09:46,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 3 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) Word has length 548 [2021-11-23 03:09:46,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:09:46,863 INFO L225 Difference]: With dead ends: 23103 [2021-11-23 03:09:46,863 INFO L226 Difference]: Without dead ends: 16591 [2021-11-23 03:09:46,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 546 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 03:09:46,926 INFO L933 BasicCegarLoop]: 10134 mSDtfsCounter, 1092 mSDsluCounter, 10007 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 19344 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:09:46,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 19344 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1717 Invalid, 7 Unknown, 0 Unchecked, 28.9s Time] [2021-11-23 03:09:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16591 states. [2021-11-23 03:09:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16591 to 15321. [2021-11-23 03:09:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15321 states, 9760 states have (on average 1.3286885245901638) internal successors, (12968), 9979 states have internal predecessors, (12968), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-23 03:09:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15321 states to 15321 states and 22856 transitions. [2021-11-23 03:09:48,318 INFO L78 Accepts]: Start accepts. Automaton has 15321 states and 22856 transitions. Word has length 548 [2021-11-23 03:09:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:09:48,323 INFO L470 AbstractCegarLoop]: Abstraction has 15321 states and 22856 transitions. [2021-11-23 03:09:48,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 3 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 3 states have call predecessors, (92), 3 states have call successors, (92) [2021-11-23 03:09:48,323 INFO L276 IsEmpty]: Start isEmpty. Operand 15321 states and 22856 transitions. [2021-11-23 03:09:48,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2021-11-23 03:09:48,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:09:48,437 INFO L514 BasicCegarLoop]: trace histogram [17, 9, 9, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:48,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:09:48,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:09:48,662 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:09:48,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:09:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash 868854894, now seen corresponding path program 1 times [2021-11-23 03:09:48,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:09:48,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478047068] [2021-11-23 03:09:48,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:09:48,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:09:49,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:09:49,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768510719] [2021-11-23 03:09:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:09:49,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:09:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:09:49,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:09:49,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:09:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:09:53,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 18017 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:09:53,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:09:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2021-11-23 03:09:54,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:09:54,623 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:09:54,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478047068] [2021-11-23 03:09:54,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:09:54,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768510719] [2021-11-23 03:09:54,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768510719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:09:54,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:09:54,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:09:54,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000458116] [2021-11-23 03:09:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:09:54,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:09:54,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:09:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:09:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:09:54,626 INFO L87 Difference]: Start difference. First operand 15321 states and 22856 transitions. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-23 03:09:56,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:09:59,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:04,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:08,830 WARN L534 Checker$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 03:10:10,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:13,006 WARN L534 Checker$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 03:10:22,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:24,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:27,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:10:28,369 INFO L93 Difference]: Finished difference Result 27282 states and 40802 transitions. [2021-11-23 03:10:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:10:28,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) Word has length 592 [2021-11-23 03:10:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:10:28,472 INFO L225 Difference]: With dead ends: 27282 [2021-11-23 03:10:28,472 INFO L226 Difference]: Without dead ends: 16169 [2021-11-23 03:10:28,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 590 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 03:10:28,534 INFO L933 BasicCegarLoop]: 9443 mSDtfsCounter, 593 mSDsluCounter, 19783 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 114 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 27614 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:10:28,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 27614 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2502 Invalid, 7 Unknown, 0 Unchecked, 33.2s Time] [2021-11-23 03:10:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16169 states. [2021-11-23 03:10:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16169 to 15325. [2021-11-23 03:10:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15325 states, 9764 states have (on average 1.328553871364195) internal successors, (12972), 9983 states have internal predecessors, (12972), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-23 03:10:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 22860 transitions. [2021-11-23 03:10:29,871 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 22860 transitions. Word has length 592 [2021-11-23 03:10:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:10:29,872 INFO L470 AbstractCegarLoop]: Abstraction has 15325 states and 22860 transitions. [2021-11-23 03:10:29,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 2 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2021-11-23 03:10:29,872 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 22860 transitions. [2021-11-23 03:10:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-23 03:10:30,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:10:30,014 INFO L514 BasicCegarLoop]: trace histogram [18, 9, 9, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:30,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:10:30,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:10:30,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:10:30,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:10:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1240552840, now seen corresponding path program 1 times [2021-11-23 03:10:30,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:10:30,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730428557] [2021-11-23 03:10:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:10:30,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:10:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:10:31,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:10:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730428557] [2021-11-23 03:10:31,053 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-23 03:10:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448464895] [2021-11-23 03:10:31,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:10:31,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:10:31,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:10:31,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:10:31,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:10:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:10:35,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 18115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:10:35,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:10:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2021-11-23 03:10:36,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:10:36,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448464895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:10:36,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:10:36,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:10:36,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389183636] [2021-11-23 03:10:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:10:36,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:10:36,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:10:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:10:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:10:36,691 INFO L87 Difference]: Start difference. First operand 15325 states and 22860 transitions. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-23 03:10:39,600 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 03:10:47,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:49,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:51,989 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:10:56,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:05,194 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:07,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:11:07,906 INFO L93 Difference]: Finished difference Result 26786 states and 40031 transitions. [2021-11-23 03:11:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:11:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 610 [2021-11-23 03:11:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:11:07,993 INFO L225 Difference]: With dead ends: 26786 [2021-11-23 03:11:07,993 INFO L226 Difference]: Without dead ends: 15669 [2021-11-23 03:11:08,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 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 03:11:08,049 INFO L933 BasicCegarLoop]: 9238 mSDtfsCounter, 343 mSDsluCounter, 19679 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 123 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 27319 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:11:08,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 27319 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2434 Invalid, 7 Unknown, 0 Unchecked, 30.8s Time] [2021-11-23 03:11:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15669 states. [2021-11-23 03:11:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15669 to 15329. [2021-11-23 03:11:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15329 states, 9768 states have (on average 1.3284193284193284) internal successors, (12976), 9987 states have internal predecessors, (12976), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-23 03:11:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 22864 transitions. [2021-11-23 03:11:09,345 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 22864 transitions. Word has length 610 [2021-11-23 03:11:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:11:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 15329 states and 22864 transitions. [2021-11-23 03:11:09,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-23 03:11:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 22864 transitions. [2021-11-23 03:11:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-11-23 03:11:09,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:11:09,409 INFO L514 BasicCegarLoop]: trace histogram [18, 9, 9, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:09,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:11:09,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:11:09,634 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:11:09,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:11:09,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2039050071, now seen corresponding path program 1 times [2021-11-23 03:11:09,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:11:09,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988634061] [2021-11-23 03:11:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:11:09,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:11:10,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:11:10,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163048197] [2021-11-23 03:11:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:11:10,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:11:10,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:11:10,145 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:11:10,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:11:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:11:14,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 18125 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:11:14,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:11:15,796 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2021-11-23 03:11:15,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:11:15,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:11:15,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988634061] [2021-11-23 03:11:15,797 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:11:15,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163048197] [2021-11-23 03:11:15,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163048197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:11:15,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:11:15,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:11:15,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643782718] [2021-11-23 03:11:15,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:11:15,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:11:15,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:11:15,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:11:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:11:15,801 INFO L87 Difference]: Start difference. First operand 15329 states and 22864 transitions. Second operand has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-23 03:11:18,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:28,141 WARN L534 Checker$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 03:11:30,178 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:32,329 WARN L534 Checker$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 03:11:36,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:42,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:47,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:49,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:11:50,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:11:50,050 INFO L93 Difference]: Finished difference Result 27278 states and 40789 transitions. [2021-11-23 03:11:50,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:11:50,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 613 [2021-11-23 03:11:50,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:11:50,261 INFO L225 Difference]: With dead ends: 27278 [2021-11-23 03:11:50,261 INFO L226 Difference]: Without dead ends: 16157 [2021-11-23 03:11:50,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 611 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 03:11:50,318 INFO L933 BasicCegarLoop]: 9438 mSDtfsCounter, 354 mSDsluCounter, 20061 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 109 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 27863 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:11:50,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 27863 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2529 Invalid, 8 Unknown, 0 Unchecked, 33.8s Time] [2021-11-23 03:11:50,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16157 states. [2021-11-23 03:11:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16157 to 15333. [2021-11-23 03:11:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15333 states, 9772 states have (on average 1.3282848956201392) internal successors, (12980), 9991 states have internal predecessors, (12980), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-23 03:11:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15333 states to 15333 states and 22868 transitions. [2021-11-23 03:11:51,546 INFO L78 Accepts]: Start accepts. Automaton has 15333 states and 22868 transitions. Word has length 613 [2021-11-23 03:11:51,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:11:51,549 INFO L470 AbstractCegarLoop]: Abstraction has 15333 states and 22868 transitions. [2021-11-23 03:11:51,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2021-11-23 03:11:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15333 states and 22868 transitions. [2021-11-23 03:11:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2021-11-23 03:11:51,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:11:51,611 INFO L514 BasicCegarLoop]: trace histogram [18, 9, 9, 7, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:51,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:11:51,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 03:11:51,824 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:11:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:11:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1188824326, now seen corresponding path program 1 times [2021-11-23 03:11:51,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:11:51,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454229189] [2021-11-23 03:11:51,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:11:51,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:11:52,406 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:11:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999767823] [2021-11-23 03:11:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:11:52,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:11:52,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:11:52,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:11:52,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:11:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:11:56,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 18238 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:11:56,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:11:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-23 03:11:57,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:11:57,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:11:57,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454229189] [2021-11-23 03:11:57,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:11:57,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999767823] [2021-11-23 03:11:57,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999767823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:11:57,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:11:57,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:11:57,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803059088] [2021-11-23 03:11:57,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:11:57,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:11:57,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:11:57,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:11:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:11:57,980 INFO L87 Difference]: Start difference. First operand 15333 states and 22868 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-11-23 03:12:00,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:06,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:09,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:11,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:13,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:15,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:17,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:20,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:26,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:27,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:29,893 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:32,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:34,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:36,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:12:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:12:37,107 INFO L93 Difference]: Finished difference Result 26802 states and 40047 transitions. [2021-11-23 03:12:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:12:37,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) Word has length 632 [2021-11-23 03:12:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:12:37,259 INFO L225 Difference]: With dead ends: 26802 [2021-11-23 03:12:37,259 INFO L226 Difference]: Without dead ends: 15677 [2021-11-23 03:12:37,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 630 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 03:12:37,311 INFO L933 BasicCegarLoop]: 9243 mSDtfsCounter, 343 mSDsluCounter, 19683 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 123 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 27323 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:12:37,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 27323 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2438 Invalid, 10 Unknown, 0 Unchecked, 38.6s Time] [2021-11-23 03:12:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15677 states. [2021-11-23 03:12:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15677 to 15337. [2021-11-23 03:12:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15337 states, 9776 states have (on average 1.3281505728314238) internal successors, (12984), 9995 states have internal predecessors, (12984), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 616 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-23 03:12:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 22872 transitions. [2021-11-23 03:12:38,470 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 22872 transitions. Word has length 632 [2021-11-23 03:12:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:12:38,471 INFO L470 AbstractCegarLoop]: Abstraction has 15337 states and 22872 transitions. [2021-11-23 03:12:38,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 2 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 2 states have call predecessors, (103), 2 states have call successors, (103) [2021-11-23 03:12:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 22872 transitions. [2021-11-23 03:12:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2021-11-23 03:12:38,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:12:38,534 INFO L514 BasicCegarLoop]: trace histogram [18, 9, 9, 7, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:12:38,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:12:38,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-23 03:12:38,750 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:12:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:12:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 547377721, now seen corresponding path program 1 times [2021-11-23 03:12:38,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:12:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619375548] [2021-11-23 03:12:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:12:39,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:12:39,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899072282] [2021-11-23 03:12:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:12:39,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:12:39,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:12:39,208 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:12:39,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f41a0ffb-4841-4152-9812-5e95325a57c5/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:12:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:12:43,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 18295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:12:43,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:12:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 138 proven. 5 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-11-23 03:12:44,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:12:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-23 03:12:45,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:12:45,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619375548] [2021-11-23 03:12:45,651 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:12:45,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899072282] [2021-11-23 03:12:45,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899072282] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:12:45,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1242640447] [2021-11-23 03:12:45,695 INFO L159 IcfgInterpreter]: Started Sifa with 464 locations of interest [2021-11-23 03:12:45,695 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:12:45,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:12:45,713 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:12:45,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs