./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a5840d200f9b01baa7c7c0720decd9e57e03b81f3e57be2769ef74cbe72cbe99 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:27:56,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:27:56,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:27:56,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:27:56,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:27:56,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:27:56,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:27:56,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:27:56,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:27:56,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:27:56,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:27:56,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:27:56,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:27:56,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:27:56,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:27:56,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:27:56,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:27:56,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:27:56,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:27:56,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:27:56,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:27:56,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:27:56,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:27:56,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:27:56,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:27:56,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:27:56,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:27:56,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:27:56,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:27:56,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:27:56,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:27:56,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:27:56,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:27:56,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:27:56,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:27:56,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:27:56,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:27:56,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:27:56,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:27:56,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:27:56,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:27:56,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:27:56,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:27:56,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:27:56,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:27:56,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:27:56,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:27:56,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:27:56,227 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:27:56,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:27:56,236 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:27:56,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:27:56,238 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:27:56,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:27:56,239 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:27:56,239 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:27:56,240 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:27:56,240 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:27:56,240 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:27:56,241 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:27:56,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:27:56,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:27:56,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:27:56,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:27:56,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:27:56,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:27:56,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:27:56,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:27:56,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:27:56,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:27:56,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:27:56,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:27:56,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:27:56,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:27:56,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:27:56,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:27:56,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:27:56,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:27:56,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:27:56,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:27:56,251 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5840d200f9b01baa7c7c0720decd9e57e03b81f3e57be2769ef74cbe72cbe99 [2021-11-21 00:27:56,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:27:56,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:27:56,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:27:56,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:27:56,520 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:27:56,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 00:27:56,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/data/0a85d2a15/c2718d735212408bb5ae5589d1e85557/FLAG75bfed2c5 [2021-11-21 00:27:57,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:27:57,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 00:27:57,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/data/0a85d2a15/c2718d735212408bb5ae5589d1e85557/FLAG75bfed2c5 [2021-11-21 00:27:58,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/data/0a85d2a15/c2718d735212408bb5ae5589d1e85557 [2021-11-21 00:27:58,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:27:58,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:27:58,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:27:58,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:27:58,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:27:58,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:27:58" (1/1) ... [2021-11-21 00:27:58,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174e47d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:27:58, skipping insertion in model container [2021-11-21 00:27:58,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:27:58" (1/1) ... [2021-11-21 00:27:58,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:27:58,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:28:07,526 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899162,899175] [2021-11-21 00:28:07,537 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899309,899322] [2021-11-21 00:28:07,538 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899448,899461] [2021-11-21 00:28:07,538 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899606,899619] [2021-11-21 00:28:07,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:28:07,681 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:28:09,236 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899162,899175] [2021-11-21 00:28:09,237 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899309,899322] [2021-11-21 00:28:09,237 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899448,899461] [2021-11-21 00:28:09,238 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_97bff7ce-42ed-4693-8cf8-6452d812e8e6/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899606,899619] [2021-11-21 00:28:09,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:28:09,913 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:28:09,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09 WrapperNode [2021-11-21 00:28:09,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:28:09,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:28:09,916 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:28:09,916 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:28:09,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:10,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:11,753 INFO L137 Inliner]: procedures = 712, calls = 16177, calls flagged for inlining = 391, calls inlined = 342, statements flattened = 29264 [2021-11-21 00:28:11,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:28:11,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:28:11,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:28:11,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:28:11,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:11,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:12,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:12,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:12,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:12,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:12,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:13,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:28:13,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:28:13,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:28:13,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:28:13,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (1/1) ... [2021-11-21 00:28:13,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:28:13,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:28:13,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:28:13,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:28:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:28:13,422 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:28:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-21 00:28:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-21 00:28:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 00:28:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 00:28:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-21 00:28:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-21 00:28:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-21 00:28:13,424 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-21 00:28:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-21 00:28:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-21 00:28:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-21 00:28:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-21 00:28:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:28:13,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:28:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-21 00:28:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-21 00:28:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-21 00:28:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-21 00:28:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:28:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:28:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-21 00:28:13,427 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-21 00:28:13,427 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-21 00:28:13,428 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-21 00:28:13,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:28:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:28:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-21 00:28:13,429 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-21 00:28:13,429 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-21 00:28:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-21 00:28:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-21 00:28:13,430 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-21 00:28:13,430 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:28:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:28:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-21 00:28:13,431 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-21 00:28:13,431 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-21 00:28:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-21 00:28:13,432 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-21 00:28:13,432 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-21 00:28:13,433 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:28:13,433 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:28:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-21 00:28:13,435 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-21 00:28:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:28:13,435 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:28:13,435 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:28:13,436 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:28:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-21 00:28:13,436 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-21 00:28:13,436 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-21 00:28:13,437 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-21 00:28:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 00:28:13,450 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 00:28:13,450 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-21 00:28:13,451 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-21 00:28:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-21 00:28:13,451 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-21 00:28:13,451 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:28:13,451 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:28:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-21 00:28:13,452 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-21 00:28:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-21 00:28:13,452 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-21 00:28:13,452 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-21 00:28:13,453 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-21 00:28:13,453 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-21 00:28:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-21 00:28:13,454 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:28:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:28:13,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:28:13,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:28:13,455 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:28:13,455 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:28:13,455 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:28:13,456 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:28:13,456 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:28:13,456 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:28:13,456 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:28:13,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:28:13,457 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:28:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:28:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-21 00:28:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-21 00:28:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:28:13,458 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 00:28:13,458 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 00:28:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-21 00:28:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-21 00:28:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-21 00:28:13,459 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-21 00:28:13,459 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-21 00:28:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-21 00:28:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-21 00:28:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-21 00:28:13,460 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-21 00:28:13,460 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-21 00:28:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-21 00:28:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-21 00:28:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-21 00:28:13,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-21 00:28:13,461 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-21 00:28:13,462 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-21 00:28:13,463 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-21 00:28:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-21 00:28:13,465 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-21 00:28:13,465 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-21 00:28:13,466 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:28:13,466 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:28:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 00:28:13,467 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 00:28:13,467 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-21 00:28:13,468 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-21 00:28:13,474 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-21 00:28:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-21 00:28:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:28:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 00:28:13,475 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 00:28:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-21 00:28:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-21 00:28:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-21 00:28:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-21 00:28:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-21 00:28:13,476 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-21 00:28:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:28:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:28:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-21 00:28:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-21 00:28:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:28:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:28:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:28:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-21 00:28:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-21 00:28:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:28:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:28:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:28:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-21 00:28:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-21 00:28:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-21 00:28:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-21 00:28:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-21 00:28:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-21 00:28:13,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:28:13,479 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:28:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-21 00:28:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-21 00:28:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-21 00:28:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-21 00:28:13,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 00:28:13,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 00:28:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-21 00:28:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-21 00:28:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 00:28:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 00:28:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:28:13,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:28:13,481 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-21 00:28:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-21 00:28:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:28:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:28:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-21 00:28:13,482 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-21 00:28:13,482 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-21 00:28:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-21 00:28:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-21 00:28:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-21 00:28:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:28:13,483 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:28:13,483 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-21 00:28:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-21 00:28:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-21 00:28:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-21 00:28:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-21 00:28:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-21 00:28:13,484 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-21 00:28:13,484 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-21 00:28:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-21 00:28:13,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-21 00:28:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:28:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-21 00:28:13,485 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-21 00:28:13,485 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-21 00:28:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-21 00:28:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:28:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-21 00:28:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-21 00:28:13,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:28:13,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:28:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:28:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:28:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:28:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-21 00:28:13,487 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-21 00:28:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:28:13,487 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-21 00:28:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-21 00:28:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:28:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:28:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-21 00:28:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-21 00:28:13,488 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-21 00:28:13,488 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-21 00:28:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-21 00:28:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-21 00:28:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-21 00:28:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-21 00:28:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:28:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:28:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-21 00:28:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-21 00:28:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-21 00:28:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-21 00:28:13,490 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-21 00:28:13,490 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-21 00:28:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-21 00:28:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-21 00:28:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-21 00:28:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-21 00:28:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:28:13,491 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:28:13,491 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-21 00:28:13,492 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-21 00:28:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:28:13,492 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:28:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-21 00:28:13,492 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-21 00:28:13,492 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-21 00:28:13,492 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-21 00:28:13,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:28:13,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:28:13,494 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-21 00:28:13,497 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-21 00:28:13,497 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-21 00:28:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-21 00:28:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-21 00:28:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-21 00:28:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-21 00:28:13,498 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-21 00:28:13,498 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-21 00:28:13,499 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-21 00:28:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-21 00:28:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-21 00:28:13,500 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-21 00:28:13,500 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-21 00:28:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:28:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:28:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:28:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:28:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-21 00:28:13,501 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-21 00:28:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-21 00:28:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-21 00:28:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-21 00:28:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-21 00:28:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-21 00:28:13,502 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-21 00:28:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:28:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:28:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-21 00:28:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-21 00:28:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 00:28:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 00:28:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-21 00:28:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-21 00:28:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-21 00:28:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-21 00:28:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-21 00:28:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-21 00:28:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:28:13,504 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:28:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-21 00:28:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-21 00:28:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:28:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:28:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:28:13,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:28:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-21 00:28:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-21 00:28:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:28:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-21 00:28:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-21 00:28:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-21 00:28:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-21 00:28:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-21 00:28:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:28:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:28:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-21 00:28:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-21 00:28:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-21 00:28:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 00:28:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 00:28:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-21 00:28:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-21 00:28:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 00:28:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 00:28:13,508 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-21 00:28:13,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-21 00:28:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-21 00:28:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-21 00:28:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:28:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:28:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:28:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:28:13,509 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-21 00:28:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-21 00:28:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-21 00:28:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-21 00:28:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-21 00:28:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-21 00:28:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-21 00:28:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-21 00:28:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:28:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:28:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-21 00:28:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-21 00:28:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-21 00:28:13,511 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-21 00:28:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-21 00:28:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-21 00:28:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-21 00:28:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-21 00:28:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-21 00:28:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-21 00:28:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-21 00:28:13,512 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-21 00:28:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-21 00:28:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-21 00:28:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:28:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:28:13,513 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-21 00:28:13,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-21 00:28:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 00:28:13,514 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 00:28:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:28:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-21 00:28:13,514 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-21 00:28:13,514 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-21 00:28:13,514 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-21 00:28:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:28:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:28:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-21 00:28:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-21 00:28:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:28:13,515 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-21 00:28:13,515 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-21 00:28:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-21 00:28:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-21 00:28:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-21 00:28:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-21 00:28:13,516 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-21 00:28:13,516 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-21 00:28:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-21 00:28:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-21 00:28:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-21 00:28:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-21 00:28:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:28:13,517 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-21 00:28:13,517 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-21 00:28:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-21 00:28:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-21 00:28:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-21 00:28:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-21 00:28:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-21 00:28:13,518 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-21 00:28:13,518 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-21 00:28:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-21 00:28:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-21 00:28:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-21 00:28:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-21 00:28:13,519 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-21 00:28:13,519 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:28:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:28:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-21 00:28:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-21 00:28:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:28:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:28:13,520 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-21 00:28:13,520 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-21 00:28:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-21 00:28:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-21 00:28:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:28:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:28:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-21 00:28:13,521 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-21 00:28:13,521 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-21 00:28:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-21 00:28:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-21 00:28:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-21 00:28:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-21 00:28:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-21 00:28:13,522 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-21 00:28:13,522 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-21 00:28:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-21 00:28:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-21 00:28:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-21 00:28:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-21 00:28:13,523 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-21 00:28:13,523 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-21 00:28:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 00:28:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 00:28:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:28:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:28:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:28:13,524 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:28:13,524 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-21 00:28:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-21 00:28:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-21 00:28:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-21 00:28:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-21 00:28:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-21 00:28:13,525 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-21 00:28:13,525 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-21 00:28:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-21 00:28:13,526 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-21 00:28:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-21 00:28:13,526 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-21 00:28:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:28:13,526 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:28:13,526 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-21 00:28:13,527 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-21 00:28:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 00:28:13,527 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 00:28:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-21 00:28:13,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-21 00:28:13,527 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:28:13,528 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:28:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-21 00:28:13,528 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-21 00:28:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-21 00:28:13,528 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-21 00:28:13,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_20 [2021-11-21 00:28:13,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_20 [2021-11-21 00:28:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:28:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-21 00:28:13,529 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-21 00:28:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:28:13,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:28:13,529 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-21 00:28:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-21 00:28:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-21 00:28:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-21 00:28:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-21 00:28:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-21 00:28:13,530 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:28:13,530 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:28:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-21 00:28:13,531 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-21 00:28:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-21 00:28:13,531 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-21 00:28:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-21 00:28:13,531 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-21 00:28:13,531 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-21 00:28:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-21 00:28:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 00:28:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 00:28:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-21 00:28:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-21 00:28:13,532 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-21 00:28:13,532 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-21 00:28:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-21 00:28:13,533 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-21 00:28:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-21 00:28:13,533 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-21 00:28:13,533 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-21 00:28:13,533 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-21 00:28:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-21 00:28:13,534 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-21 00:28:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-21 00:28:13,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-21 00:28:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-21 00:28:13,534 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-21 00:28:13,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:28:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:28:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-21 00:28:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-21 00:28:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:28:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-21 00:28:13,535 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 00:28:13,535 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 00:28:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-21 00:28:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-21 00:28:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-21 00:28:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-21 00:28:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 00:28:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 00:28:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-21 00:28:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-21 00:28:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 00:28:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 00:28:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-21 00:28:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-21 00:28:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:28:13,538 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:28:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-21 00:28:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:28:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-21 00:28:13,538 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-21 00:28:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-21 00:28:13,538 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-21 00:28:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:28:13,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:28:13,543 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-21 00:28:15,938 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:28:15,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:28:17,154 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:29:20,489 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:29:28,373 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:29:28,373 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-21 00:29:28,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:28 BoogieIcfgContainer [2021-11-21 00:29:28,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:29:28,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:29:28,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:29:28,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:29:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:27:58" (1/3) ... [2021-11-21 00:29:28,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329c306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:28, skipping insertion in model container [2021-11-21 00:29:28,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:09" (2/3) ... [2021-11-21 00:29:28,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329c306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:29:28, skipping insertion in model container [2021-11-21 00:29:28,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:29:28" (3/3) ... [2021-11-21 00:29:28,399 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-21 00:29:28,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:29:28,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 00:29:28,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:29:28,488 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:29:28,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 00:29:28,628 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) [2021-11-21 00:29:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:29:28,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:28,635 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] [2021-11-21 00:29:28,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:29:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1382324443, now seen corresponding path program 1 times [2021-11-21 00:29:28,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:28,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319588068] [2021-11-21 00:29:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:28,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:29:30,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:30,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319588068] [2021-11-21 00:29:30,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319588068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:30,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:30,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:29:30,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498820129] [2021-11-21 00:29:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:30,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:29:30,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:29:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:29:30,055 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) [2021-11-21 00:29:32,501 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:34,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:41,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:43,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:46,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:49,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:58,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:03,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:06,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:08,488 INFO L93 Difference]: Finished difference Result 17732 states and 26633 transitions. [2021-11-21 00:30:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:08,490 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 [2021-11-21 00:30:08,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:08,646 INFO L225 Difference]: With dead ends: 17732 [2021-11-21 00:30:08,646 INFO L226 Difference]: Without dead ends: 11159 [2021-11-21 00:30:08,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:08,729 INFO L933 BasicCegarLoop]: 10503 mSDtfsCounter, 6954 mSDsluCounter, 21080 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6958 SdHoareTripleChecker+Valid, 29976 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:08,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6958 Valid, 29976 Invalid, 2425 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2417 Invalid, 7 Unknown, 0 Unchecked, 37.3s Time] [2021-11-21 00:30:08,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11159 states. [2021-11-21 00:30:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11159 to 11122. [2021-11-21 00:30:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11122 states, 7108 states have (on average 1.3325830050647158) internal successors, (9472), 7271 states have internal predecessors, (9472), 3580 states have call successors, (3580), 433 states have call predecessors, (3580), 432 states have return successors, (3580), 3562 states have call predecessors, (3580), 3578 states have call successors, (3580) [2021-11-21 00:30:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11122 states to 11122 states and 16632 transitions. [2021-11-21 00:30:10,177 INFO L78 Accepts]: Start accepts. Automaton has 11122 states and 16632 transitions. Word has length 34 [2021-11-21 00:30:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:10,177 INFO L470 AbstractCegarLoop]: Abstraction has 11122 states and 16632 transitions. [2021-11-21 00:30:10,178 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) [2021-11-21 00:30:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 11122 states and 16632 transitions. [2021-11-21 00:30:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-21 00:30:10,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:10,182 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] [2021-11-21 00:30:10,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:30:10,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:10,184 INFO L85 PathProgramCache]: Analyzing trace with hash -787865769, now seen corresponding path program 1 times [2021-11-21 00:30:10,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:10,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510911252] [2021-11-21 00:30:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:10,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-21 00:30:11,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:11,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510911252] [2021-11-21 00:30:11,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510911252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:11,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:11,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:11,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077407988] [2021-11-21 00:30:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:11,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:11,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:11,077 INFO L87 Difference]: Start difference. First operand 11122 states and 16632 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) [2021-11-21 00:30:14,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:25,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:27,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:29,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:31,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:34,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:39,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:47,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:49,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:53,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:53,743 INFO L93 Difference]: Finished difference Result 15790 states and 23620 transitions. [2021-11-21 00:30:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:53,744 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 [2021-11-21 00:30:53,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:53,893 INFO L225 Difference]: With dead ends: 15790 [2021-11-21 00:30:53,893 INFO L226 Difference]: Without dead ends: 15788 [2021-11-21 00:30:53,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:53,915 INFO L933 BasicCegarLoop]: 11029 mSDtfsCounter, 6578 mSDsluCounter, 21638 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 52 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6639 SdHoareTripleChecker+Valid, 31007 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:53,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6639 Valid, 31007 Invalid, 2639 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 2579 Invalid, 8 Unknown, 0 Unchecked, 42.0s Time] [2021-11-21 00:30:53,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15788 states. [2021-11-21 00:30:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15788 to 15316. [2021-11-21 00:30:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15316 states, 9756 states have (on average 1.3288232882328823) internal successors, (12964), 9975 states have internal predecessors, (12964), 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) [2021-11-21 00:30:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15316 states to 15316 states and 22850 transitions. [2021-11-21 00:30:55,339 INFO L78 Accepts]: Start accepts. Automaton has 15316 states and 22850 transitions. Word has length 85 [2021-11-21 00:30:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:55,340 INFO L470 AbstractCegarLoop]: Abstraction has 15316 states and 22850 transitions. [2021-11-21 00:30:55,341 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) [2021-11-21 00:30:55,341 INFO L276 IsEmpty]: Start isEmpty. Operand 15316 states and 22850 transitions. [2021-11-21 00:30:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-21 00:30:55,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:55,366 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] [2021-11-21 00:30:55,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:30:55,366 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:55,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1392974238, now seen corresponding path program 1 times [2021-11-21 00:30:55,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:55,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471514633] [2021-11-21 00:30:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:55,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-21 00:30:56,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:56,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471514633] [2021-11-21 00:30:56,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471514633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:56,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:56,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:30:56,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604699483] [2021-11-21 00:30:56,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:56,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:30:56,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:56,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:30:56,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:30:56,683 INFO L87 Difference]: Start difference. First operand 15316 states and 22850 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) [2021-11-21 00:30:59,734 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:01,932 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:08,117 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:10,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:12,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:18,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:25,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:28,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:31,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:32,196 INFO L93 Difference]: Finished difference Result 15813 states and 23645 transitions. [2021-11-21 00:31:32,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:31:32,197 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 [2021-11-21 00:31:32,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:32,298 INFO L225 Difference]: With dead ends: 15813 [2021-11-21 00:31:32,298 INFO L226 Difference]: Without dead ends: 15811 [2021-11-21 00:31:32,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:32,314 INFO L933 BasicCegarLoop]: 10788 mSDtfsCounter, 7211 mSDsluCounter, 21468 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 66 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7272 SdHoareTripleChecker+Valid, 30622 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:32,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7272 Valid, 30622 Invalid, 2586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 2511 Invalid, 9 Unknown, 0 Unchecked, 35.0s Time] [2021-11-21 00:31:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15811 states. [2021-11-21 00:31:33,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15811 to 15316. [2021-11-21 00:31:33,634 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) [2021-11-21 00:31:33,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15316 states to 15316 states and 22849 transitions. [2021-11-21 00:31:33,742 INFO L78 Accepts]: Start accepts. Automaton has 15316 states and 22849 transitions. Word has length 190 [2021-11-21 00:31:33,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:33,743 INFO L470 AbstractCegarLoop]: Abstraction has 15316 states and 22849 transitions. [2021-11-21 00:31:33,743 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) [2021-11-21 00:31:33,744 INFO L276 IsEmpty]: Start isEmpty. Operand 15316 states and 22849 transitions. [2021-11-21 00:31:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-11-21 00:31:33,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:33,981 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] [2021-11-21 00:31:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:31:33,982 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:33,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 2007428456, now seen corresponding path program 1 times [2021-11-21 00:31:33,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:33,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013648659] [2021-11-21 00:31:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:33,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:34,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:31:34,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223278913] [2021-11-21 00:31:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:34,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:31:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:34,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:31:34,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:31:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:38,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 17733 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:31:39,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:31:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-21 00:31:40,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:31:40,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:40,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013648659] [2021-11-21 00:31:40,296 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:31:40,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223278913] [2021-11-21 00:31:40,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223278913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:40,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:40,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:40,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091555189] [2021-11-21 00:31:40,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:40,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:40,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:40,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:40,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:40,300 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) [2021-11-21 00:31:43,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:49,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:50,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:52,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:59,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:01,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:04,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:06,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:06,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:06,683 INFO L93 Difference]: Finished difference Result 23163 states and 34740 transitions. [2021-11-21 00:32:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:06,684 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 [2021-11-21 00:32:06,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:06,792 INFO L225 Difference]: With dead ends: 23163 [2021-11-21 00:32:06,792 INFO L226 Difference]: Without dead ends: 16651 [2021-11-21 00:32:06,865 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 [2021-11-21 00:32:06,866 INFO L933 BasicCegarLoop]: 10258 mSDtfsCounter, 1139 mSDsluCounter, 10056 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 19515 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:06,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1625 Valid, 19515 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1765 Invalid, 6 Unknown, 0 Unchecked, 25.9s Time] [2021-11-21 00:32:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16651 states. [2021-11-21 00:32:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16651 to 15321. [2021-11-21 00:32:08,235 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) [2021-11-21 00:32:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15321 states to 15321 states and 22856 transitions. [2021-11-21 00:32:08,350 INFO L78 Accepts]: Start accepts. Automaton has 15321 states and 22856 transitions. Word has length 548 [2021-11-21 00:32:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:08,354 INFO L470 AbstractCegarLoop]: Abstraction has 15321 states and 22856 transitions. [2021-11-21 00:32:08,354 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) [2021-11-21 00:32:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15321 states and 22856 transitions. [2021-11-21 00:32:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2021-11-21 00:32:08,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:08,459 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] [2021-11-21 00:32:08,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:08,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:08,673 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:08,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:08,674 INFO L85 PathProgramCache]: Analyzing trace with hash 868854894, now seen corresponding path program 1 times [2021-11-21 00:32:08,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:08,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955394735] [2021-11-21 00:32:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:08,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:09,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:32:09,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788704238] [2021-11-21 00:32:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:09,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:09,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:09,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:09,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:32:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:13,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 18017 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:32:13,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2021-11-21 00:32:15,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:32:15,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:15,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955394735] [2021-11-21 00:32:15,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:32:15,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788704238] [2021-11-21 00:32:15,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788704238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:15,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:15,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:15,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349336343] [2021-11-21 00:32:15,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:15,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:15,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:15,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:15,514 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) [2021-11-21 00:32:18,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:25,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:29,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:31,397 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:33,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:38,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:44,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:47,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:50,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:51,011 INFO L93 Difference]: Finished difference Result 27282 states and 40802 transitions. [2021-11-21 00:32:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:32:51,012 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 [2021-11-21 00:32:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:51,104 INFO L225 Difference]: With dead ends: 27282 [2021-11-21 00:32:51,104 INFO L226 Difference]: Without dead ends: 16169 [2021-11-21 00:32:51,165 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 [2021-11-21 00:32:51,166 INFO L933 BasicCegarLoop]: 9442 mSDtfsCounter, 594 mSDsluCounter, 19779 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 114 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 27613 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:51,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 27613 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2497 Invalid, 8 Unknown, 0 Unchecked, 34.9s Time] [2021-11-21 00:32:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16169 states. [2021-11-21 00:32:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16169 to 15325. [2021-11-21 00:32:52,342 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) [2021-11-21 00:32:52,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 22860 transitions. [2021-11-21 00:32:52,460 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 22860 transitions. Word has length 592 [2021-11-21 00:32:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:52,466 INFO L470 AbstractCegarLoop]: Abstraction has 15325 states and 22860 transitions. [2021-11-21 00:32:52,466 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) [2021-11-21 00:32:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 22860 transitions. [2021-11-21 00:32:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-21 00:32:52,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:52,539 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] [2021-11-21 00:32:52,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:52,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:52,763 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:52,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1240552840, now seen corresponding path program 1 times [2021-11-21 00:32:52,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:52,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574184705] [2021-11-21 00:32:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:52,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:53,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:53,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574184705] [2021-11-21 00:32:53,955 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-21 00:32:53,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632115810] [2021-11-21 00:32:53,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:53,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:53,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:53,957 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:53,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:32:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:58,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 18115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:32:58,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2021-11-21 00:32:59,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:32:59,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632115810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:59,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:59,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:59,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238665098] [2021-11-21 00:32:59,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:59,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:59,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:59,860 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) [2021-11-21 00:33:02,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:12,812 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:14,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:16,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:21,742 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:28,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:30,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:33,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:34,288 INFO L93 Difference]: Finished difference Result 26786 states and 40031 transitions. [2021-11-21 00:33:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:33:34,288 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 [2021-11-21 00:33:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:34,374 INFO L225 Difference]: With dead ends: 26786 [2021-11-21 00:33:34,374 INFO L226 Difference]: Without dead ends: 15669 [2021-11-21 00:33:34,434 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 [2021-11-21 00:33:34,435 INFO L933 BasicCegarLoop]: 9238 mSDtfsCounter, 343 mSDsluCounter, 19681 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 123 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 27319 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:34,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 27319 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2436 Invalid, 7 Unknown, 0 Unchecked, 33.9s Time] [2021-11-21 00:33:34,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15669 states. [2021-11-21 00:33:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15669 to 15329. [2021-11-21 00:33:35,441 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) [2021-11-21 00:33:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15329 states to 15329 states and 22864 transitions. [2021-11-21 00:33:35,567 INFO L78 Accepts]: Start accepts. Automaton has 15329 states and 22864 transitions. Word has length 610 [2021-11-21 00:33:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:35,568 INFO L470 AbstractCegarLoop]: Abstraction has 15329 states and 22864 transitions. [2021-11-21 00:33:35,569 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) [2021-11-21 00:33:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15329 states and 22864 transitions. [2021-11-21 00:33:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-11-21 00:33:35,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:35,648 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] [2021-11-21 00:33:35,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:35,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:35,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:35,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:35,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2039050071, now seen corresponding path program 1 times [2021-11-21 00:33:35,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:35,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126295977] [2021-11-21 00:33:35,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:35,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:36,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:33:36,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077859033] [2021-11-21 00:33:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:36,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:36,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:36,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:36,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:33:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:40,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 18125 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:33:40,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2021-11-21 00:33:42,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:33:42,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126295977] [2021-11-21 00:33:42,333 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:33:42,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077859033] [2021-11-21 00:33:42,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077859033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:42,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:33:42,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:33:42,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363819464] [2021-11-21 00:33:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:42,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:33:42,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:42,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:33:42,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:33:42,335 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) [2021-11-21 00:33:45,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:47,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:58,142 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:59,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:01,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:03,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:05,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:11,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:14,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:18,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:20,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:20,034 INFO L93 Difference]: Finished difference Result 27278 states and 40789 transitions. [2021-11-21 00:34:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:34:20,035 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 [2021-11-21 00:34:20,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:20,136 INFO L225 Difference]: With dead ends: 27278 [2021-11-21 00:34:20,136 INFO L226 Difference]: Without dead ends: 16157 [2021-11-21 00:34:20,197 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 [2021-11-21 00:34:20,198 INFO L933 BasicCegarLoop]: 9439 mSDtfsCounter, 354 mSDsluCounter, 20070 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 109 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 27865 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:20,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 27865 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2537 Invalid, 8 Unknown, 0 Unchecked, 37.0s Time] [2021-11-21 00:34:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16157 states. [2021-11-21 00:34:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16157 to 15333. [2021-11-21 00:34:21,266 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) [2021-11-21 00:34:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15333 states to 15333 states and 22868 transitions. [2021-11-21 00:34:21,386 INFO L78 Accepts]: Start accepts. Automaton has 15333 states and 22868 transitions. Word has length 613 [2021-11-21 00:34:21,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:21,387 INFO L470 AbstractCegarLoop]: Abstraction has 15333 states and 22868 transitions. [2021-11-21 00:34:21,387 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) [2021-11-21 00:34:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15333 states and 22868 transitions. [2021-11-21 00:34:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2021-11-21 00:34:21,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:21,447 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] [2021-11-21 00:34:21,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:21,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:21,675 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:34:21,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1188824326, now seen corresponding path program 1 times [2021-11-21 00:34:21,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:34:21,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440673094] [2021-11-21 00:34:21,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:21,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:34:22,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:34:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99459214] [2021-11-21 00:34:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:22,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:34:22,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:34:22,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:34:22,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:34:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:26,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 18238 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:26,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-21 00:34:28,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:34:28,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:34:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440673094] [2021-11-21 00:34:28,222 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:34:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99459214] [2021-11-21 00:34:28,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99459214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:28,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:28,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:34:28,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127638368] [2021-11-21 00:34:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:28,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:28,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:34:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:28,226 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) [2021-11-21 00:34:31,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:41,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:43,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:45,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:49,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:34:55,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:00,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:35:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:01,017 INFO L93 Difference]: Finished difference Result 26802 states and 40047 transitions. [2021-11-21 00:35:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:35:01,018 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 [2021-11-21 00:35:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:01,106 INFO L225 Difference]: With dead ends: 26802 [2021-11-21 00:35:01,106 INFO L226 Difference]: Without dead ends: 15677 [2021-11-21 00:35:01,148 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 [2021-11-21 00:35:01,149 INFO L933 BasicCegarLoop]: 9243 mSDtfsCounter, 343 mSDsluCounter, 19681 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 123 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 27323 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:01,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 27323 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2439 Invalid, 7 Unknown, 0 Unchecked, 32.1s Time] [2021-11-21 00:35:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15677 states. [2021-11-21 00:35:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15677 to 15337. [2021-11-21 00:35:02,106 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) [2021-11-21 00:35:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15337 states to 15337 states and 22872 transitions. [2021-11-21 00:35:02,199 INFO L78 Accepts]: Start accepts. Automaton has 15337 states and 22872 transitions. Word has length 632 [2021-11-21 00:35:02,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:02,200 INFO L470 AbstractCegarLoop]: Abstraction has 15337 states and 22872 transitions. [2021-11-21 00:35:02,200 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) [2021-11-21 00:35:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 15337 states and 22872 transitions. [2021-11-21 00:35:02,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2021-11-21 00:35:02,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:02,272 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] [2021-11-21 00:35:02,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:02,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:02,499 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:35:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash 547377721, now seen corresponding path program 1 times [2021-11-21 00:35:02,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:35:02,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86944378] [2021-11-21 00:35:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:02,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:35:02,969 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:35:02,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191591209] [2021-11-21 00:35:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:02,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:02,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:35:02,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:35:02,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97bff7ce-42ed-4693-8cf8-6452d812e8e6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:35:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:07,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 18295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:35:07,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 138 proven. 5 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-11-21 00:35:08,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-21 00:35:09,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:35:09,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86944378] [2021-11-21 00:35:09,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:35:09,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191591209] [2021-11-21 00:35:09,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191591209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1939299945] [2021-11-21 00:35:10,002 INFO L159 IcfgInterpreter]: Started Sifa with 464 locations of interest [2021-11-21 00:35:10,002 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:35:10,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:35:10,014 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:35:10,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs