./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/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_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7 --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 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:15:22,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:15:22,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:15:22,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:15:22,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:15:22,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:15:22,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:15:22,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:15:22,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:15:22,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:15:22,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:15:22,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:15:22,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:15:22,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:15:22,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:15:22,522 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:15:22,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:15:22,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:15:22,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:15:22,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:15:22,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:15:22,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:15:22,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:15:22,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:15:22,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:15:22,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:15:22,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:15:22,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:15:22,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:15:22,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:15:22,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:15:22,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:15:22,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:15:22,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:15:22,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:15:22,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:15:22,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:15:22,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:15:22,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:15:22,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:15:22,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:15:22,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:15:22,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:15:22,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:15:22,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:15:22,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:15:22,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:15:22,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:15:22,669 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:15:22,669 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:15:22,669 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:15:22,670 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:15:22,671 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:15:22,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:15:22,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:15:22,672 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:15:22,673 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:15:22,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:15:22,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:15:22,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:15:22,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:15:22,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:15:22,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:15:22,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:15:22,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:15:22,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:15:22,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:15:22,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:15:22,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:15:22,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:15:22,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:15:22,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:15:22,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:15:22,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:15:22,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:15:22,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:15:22,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:15:22,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:15:22,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:15:22,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:15:22,686 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_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5840d200f9b01baa7c7c0720decd9e57e03b81f3e57be2769ef74cbe72cbe99 [2021-11-25 20:15:23,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:15:23,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:15:23,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:15:23,061 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:15:23,062 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:15:23,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 20:15:23,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/data/84db749c6/db9b437b28064367bc20c7a86fc99a5c/FLAG1062cbdc2 [2021-11-25 20:15:24,618 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:15:24,619 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 20:15:24,761 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/data/84db749c6/db9b437b28064367bc20c7a86fc99a5c/FLAG1062cbdc2 [2021-11-25 20:15:25,133 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/data/84db749c6/db9b437b28064367bc20c7a86fc99a5c [2021-11-25 20:15:25,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:15:25,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:15:25,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:15:25,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:15:25,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:15:25,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:15:25" (1/1) ... [2021-11-25 20:15:25,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722518ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:25, skipping insertion in model container [2021-11-25 20:15:25,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:15:25" (1/1) ... [2021-11-25 20:15:25,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:15:25,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:15:36,211 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899162,899175] [2021-11-25 20:15:36,215 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899309,899322] [2021-11-25 20:15:36,216 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899448,899461] [2021-11-25 20:15:36,217 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899606,899619] [2021-11-25 20:15:36,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:15:36,383 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:15:37,685 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899162,899175] [2021-11-25 20:15:37,686 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899309,899322] [2021-11-25 20:15:37,687 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899448,899461] [2021-11-25 20:15:37,687 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_adca7386-92b9-4477-a0b0-c722ac7028a9/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i[899606,899619] [2021-11-25 20:15:37,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:15:38,506 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:15:38,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38 WrapperNode [2021-11-25 20:15:38,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:15:38,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:15:38,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:15:38,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:15:38,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:39,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:40,204 INFO L137 Inliner]: procedures = 712, calls = 16177, calls flagged for inlining = 391, calls inlined = 342, statements flattened = 29264 [2021-11-25 20:15:40,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:15:40,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:15:40,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:15:40,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:15:40,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:40,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:40,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:40,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:41,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:41,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:41,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:41,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:15:41,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:15:41,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:15:41,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:15:41,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (1/1) ... [2021-11-25 20:15:41,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:15:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:15:41,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:15:41,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:15:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 20:15:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 20:15:42,005 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_fc_after_link_up [2021-11-25 20:15:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_fc_after_link_up [2021-11-25 20:15:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 20:15:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 20:15:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_collision_dist [2021-11-25 20:15:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_collision_dist [2021-11-25 20:15:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_ee_clk [2021-11-25 20:15:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_ee_clk [2021-11-25 20:15:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-25 20:15:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-25 20:15:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-11-25 20:15:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-11-25 20:15:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:15:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:15:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure reg_pattern_test [2021-11-25 20:15:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_pattern_test [2021-11-25 20:15:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 20:15:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 20:15:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:15:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:15:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-25 20:15:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-25 20:15:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_eeprom [2021-11-25 20:15:42,010 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_eeprom [2021-11-25 20:15:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:15:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:15:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_manageability [2021-11-25 20:15:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_manageability [2021-11-25 20:15:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_in_ee_bits [2021-11-25 20:15:42,012 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_in_ee_bits [2021-11-25 20:15:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down_and_stop [2021-11-25 20:15:42,012 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down_and_stop [2021-11-25 20:15:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:15:42,013 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:15:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-25 20:15:42,013 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-25 20:15:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 20:15:42,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 20:15:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_unmap_and_free_tx_resource [2021-11-25 20:15:42,014 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_unmap_and_free_tx_resource [2021-11-25 20:15:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 20:15:42,016 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 20:15:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_get_info [2021-11-25 20:15:42,017 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_get_info [2021-11-25 20:15:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:15:42,017 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:15:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 20:15:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 20:15:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_do_read_eeprom [2021-11-25 20:15:42,018 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_do_read_eeprom [2021-11-25 20:15:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_rctl [2021-11-25 20:15:42,019 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_rctl [2021-11-25 20:15:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:15:42,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:15:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set [2021-11-25 20:15:42,020 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set [2021-11-25 20:15:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2021-11-25 20:15:42,021 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2021-11-25 20:15:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:15:42,021 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:15:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset [2021-11-25 20:15:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset [2021-11-25 20:15:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-25 20:15:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-25 20:15:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_eeprom_params [2021-11-25 20:15:42,023 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_eeprom_params [2021-11-25 20:15:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-25 20:15:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-25 20:15:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:15:42,024 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:15:42,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:15:42,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:15:42,025 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:15:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:15:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:15:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:15:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:15:42,027 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:15:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:15:42,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:15:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:15:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:15:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 20:15:42,029 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 20:15:42,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:15:42,030 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:15:42,030 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:15:42,030 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg [2021-11-25 20:15:42,030 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg [2021-11-25 20:15:42,030 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_speed_and_duplex [2021-11-25 20:15:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_speed_and_duplex [2021-11-25 20:15:42,031 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_standby_eeprom [2021-11-25 20:15:42,031 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_standby_eeprom [2021-11-25 20:15:42,031 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-25 20:15:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-25 20:15:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 20:15:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 20:15:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure_rx [2021-11-25 20:15:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure_rx [2021-11-25 20:15:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 20:15:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 20:15:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_hw_dev [2021-11-25 20:15:42,034 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_hw_dev [2021-11-25 20:15:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_stats [2021-11-25 20:15:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_stats [2021-11-25 20:15:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_validate_option [2021-11-25 20:15:42,041 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_validate_option [2021-11-25 20:15:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:15:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:15:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:15:42,042 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:15:42,042 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link [2021-11-25 20:15:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link [2021-11-25 20:15:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_irq [2021-11-25 20:15:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_irq [2021-11-25 20:15:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:15:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 20:15:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 20:15:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_link [2021-11-25 20:15:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_link [2021-11-25 20:15:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_vlan_mode [2021-11-25 20:15:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_vlan_mode [2021-11-25 20:15:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset [2021-11-25 20:15:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset [2021-11-25 20:15:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:15:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:15:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_dsp_after_link_change [2021-11-25 20:15:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_dsp_after_link_change [2021-11-25 20:15:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:15:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:15:42,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_maybe_stop_tx [2021-11-25 20:15:42,061 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_maybe_stop_tx [2021-11-25 20:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:15:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:15:42,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:15:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shutdown [2021-11-25 20:15:42,062 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shutdown [2021-11-25 20:15:42,062 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2021-11-25 20:15:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2021-11-25 20:15:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_used [2021-11-25 20:15:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_used [2021-11-25 20:15:42,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:15:42,063 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:15:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_disable_receiver [2021-11-25 20:15:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_disable_receiver [2021-11-25 20:15:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_kill_vid [2021-11-25 20:15:42,064 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_kill_vid [2021-11-25 20:15:42,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:15:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:15:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_force_mac_fc [2021-11-25 20:15:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_force_mac_fc [2021-11-25 20:15:42,065 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 20:15:42,065 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 20:15:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:15:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:15:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2021-11-25 20:15:42,066 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2021-11-25 20:15:42,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:15:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:15:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_leave_82542_rst [2021-11-25 20:15:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_leave_82542_rst [2021-11-25 20:15:42,067 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_has_link [2021-11-25 20:15:42,067 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_has_link [2021-11-25 20:15:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-25 20:15:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-25 20:15:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:15:42,068 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:15:42,068 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-25 20:15:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-25 20:15:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_tx_resources [2021-11-25 20:15:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_tx_resources [2021-11-25 20:15:42,069 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-25 20:15:42,069 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-25 20:15:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure pci_wake_from_d3 [2021-11-25 20:15:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_wake_from_d3 [2021-11-25 20:15:42,070 INFO L130 BoogieDeclarations]: Found specification of procedure reg_set_and_check [2021-11-25 20:15:42,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_set_and_check [2021-11-25 20:15:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:15:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_netpoll [2021-11-25 20:15:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_netpoll [2021-11-25 20:15:42,071 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-25 20:15:42,071 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-25 20:15:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:15:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 20:15:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 20:15:42,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:15:42,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:15:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:15:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:15:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:15:42,073 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_rx_mode [2021-11-25 20:15:42,073 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_rx_mode [2021-11-25 20:15:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:15:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-25 20:15:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-25 20:15:42,074 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:15:42,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:15:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_open [2021-11-25 20:15:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_open [2021-11-25 20:15:42,075 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_gso [2021-11-25 20:15:42,075 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_gso [2021-11-25 20:15:42,076 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_hw_reset [2021-11-25 20:15:42,088 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_hw_reset [2021-11-25 20:15:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_vfta [2021-11-25 20:15:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_vfta [2021-11-25 20:15:42,089 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:15:42,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:15:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_remove [2021-11-25 20:15:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_remove [2021-11-25 20:15:42,090 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_ee_bits [2021-11-25 20:15:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_ee_bits [2021-11-25 20:15:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_configure [2021-11-25 20:15:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_configure [2021-11-25 20:15:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:15:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:15:42,091 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 20:15:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 20:15:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:15:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:15:42,092 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_cable_length [2021-11-25 20:15:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_cable_length [2021-11-25 20:15:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:15:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:15:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_ee_clk [2021-11-25 20:15:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_ee_clk [2021-11-25 20:15:42,093 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_rx_resources [2021-11-25 20:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_rx_resources [2021-11-25 20:15:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:15:42,094 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_rx_add_vid [2021-11-25 20:15:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_rx_add_vid [2021-11-25 20:15:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure device_can_wakeup [2021-11-25 20:15:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure device_can_wakeup [2021-11-25 20:15:42,095 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2021-11-25 20:15:42,095 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2021-11-25 20:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 20:15:42,096 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 20:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_write [2021-11-25 20:15:42,096 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_write [2021-11-25 20:15:42,096 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 20:15:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 20:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_resume [2021-11-25 20:15:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_resume [2021-11-25 20:15:42,097 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:15:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:15:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 20:15:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 20:15:42,098 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom [2021-11-25 20:15:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom [2021-11-25 20:15:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_enter_82542_rst [2021-11-25 20:15:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_enter_82542_rst [2021-11-25 20:15:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_acquire_eeprom [2021-11-25 20:15:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_acquire_eeprom [2021-11-25 20:15:42,099 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-25 20:15:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-25 20:15:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:15:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:15:42,100 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_down_phy [2021-11-25 20:15:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_down_phy [2021-11-25 20:15:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 20:15:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 20:15:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure pci_select_bars [2021-11-25 20:15:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_select_bars [2021-11-25 20:15:42,101 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_spi_eeprom_ready [2021-11-25 20:15:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_spi_eeprom_ready [2021-11-25 20:15:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_clear_mwi [2021-11-25 20:15:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_clear_mwi [2021-11-25 20:15:42,102 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 20:15:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 20:15:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_power_up_phy [2021-11-25 20:15:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_power_up_phy [2021-11-25 20:15:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:15:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:15:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:15:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:15:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 20:15:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 20:15:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:15:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-25 20:15:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 20:15:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 20:15:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_phy_reg_ex [2021-11-25 20:15:42,111 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_phy_reg_ex [2021-11-25 20:15:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:15:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:15:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 20:15:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 20:15:42,112 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 20:15:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:15:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:15:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_io_resume [2021-11-25 20:15:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_io_resume [2021-11-25 20:15:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 20:15:42,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 20:15:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 20:15:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 20:15:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_polarity [2021-11-25 20:15:42,114 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_polarity [2021-11-25 20:15:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 20:15:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 20:15:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:15:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:15:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-25 20:15:42,115 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-25 20:15:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_raise_mdi_clk [2021-11-25 20:15:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_raise_mdi_clk [2021-11-25 20:15:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_config_mac_to_phy [2021-11-25 20:15:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_config_mac_to_phy [2021-11-25 20:15:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_eeprom_len [2021-11-25 20:15:42,116 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_eeprom_len [2021-11-25 20:15:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:15:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:15:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-25 20:15:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-25 20:15:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_setup_all_rx_resources [2021-11-25 20:15:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_setup_all_rx_resources [2021-11-25 20:15:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2021-11-25 20:15:42,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2021-11-25 20:15:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 20:15:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 20:15:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_close [2021-11-25 20:15:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_close [2021-11-25 20:15:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_reset_clk_and_crs [2021-11-25 20:15:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_reset_clk_and_crs [2021-11-25 20:15:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-25 20:15:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-25 20:15:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:15:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:15:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 20:15:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 20:15:42,135 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 20:15:42,135 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 20:15:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:15:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:15:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:15:42,136 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 20:15:42,136 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 20:15:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:15:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:15:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_get_regs_len [2021-11-25 20:15:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_get_regs_len [2021-11-25 20:15:42,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:15:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 20:15:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 20:15:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 20:15:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 20:15:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 20:15:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 20:15:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_tx_resources [2021-11-25 20:15:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_tx_resources [2021-11-25 20:15:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_setup_autoneg [2021-11-25 20:15:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_setup_autoneg [2021-11-25 20:15:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_update_mng_vlan [2021-11-25 20:15:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_update_mng_vlan [2021-11-25 20:15:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:15:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_media_type [2021-11-25 20:15:42,140 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_media_type [2021-11-25 20:15:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_eeprom [2021-11-25 20:15:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_eeprom [2021-11-25 20:15:42,141 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_vlan_filter_on_off [2021-11-25 20:15:42,141 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_vlan_filter_on_off [2021-11-25 20:15:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 20:15:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 20:15:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_nway_reset [2021-11-25 20:15:42,142 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_nway_reset [2021-11-25 20:15:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-25 20:15:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-25 20:15:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_phy_loopback [2021-11-25 20:15:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_phy_loopback [2021-11-25 20:15:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:15:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:15:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-25 20:15:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-25 20:15:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:15:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:15:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:15:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:15:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_all_rx_rings [2021-11-25 20:15:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_all_rx_rings [2021-11-25 20:15:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:15:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:15:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_enable [2021-11-25 20:15:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_enable [2021-11-25 20:15:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_up [2021-11-25 20:15:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_up [2021-11-25 20:15:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_tx_timeout [2021-11-25 20:15:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_tx_timeout [2021-11-25 20:15:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reinit_locked [2021-11-25 20:15:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reinit_locked [2021-11-25 20:15:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2021-11-25 20:15:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2021-11-25 20:15:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_phy_reg [2021-11-25 20:15:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_phy_reg [2021-11-25 20:15:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_all_rx_resources [2021-11-25 20:15:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_all_rx_resources [2021-11-25 20:15:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_lower_mdi_clk [2021-11-25 20:15:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_lower_mdi_clk [2021-11-25 20:15:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-25 20:15:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-25 20:15:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:15:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:15:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:15:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:15:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_copper_link_rtl_setup [2021-11-25 20:15:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_copper_link_rtl_setup [2021-11-25 20:15:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-25 20:15:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-25 20:15:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_eeprom [2021-11-25 20:15:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_eeprom [2021-11-25 20:15:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_desc_rings [2021-11-25 20:15:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_desc_rings [2021-11-25 20:15:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_pci_set_mwi [2021-11-25 20:15:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_pci_set_mwi [2021-11-25 20:15:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 20:15:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 20:15:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:15:42,163 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:15:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_polarity_reversal_workaround [2021-11-25 20:15:42,163 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_polarity_reversal_workaround [2021-11-25 20:15:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 20:15:42,163 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 20:15:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 20:15:42,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-25 20:15:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:15:42,164 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:15:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_link_test [2021-11-25 20:15:42,164 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_link_test [2021-11-25 20:15:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_shift_out_mdi_bits [2021-11-25 20:15:42,165 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_shift_out_mdi_bits [2021-11-25 20:15:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_20 [2021-11-25 20:15:42,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_20 [2021-11-25 20:15:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:15:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_64k_bound [2021-11-25 20:15:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_64k_bound [2021-11-25 20:15:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:15:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:15:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_set_spd_dplx [2021-11-25 20:15:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_set_spd_dplx [2021-11-25 20:15:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-25 20:15:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-25 20:15:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_down [2021-11-25 20:15:42,167 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_down [2021-11-25 20:15:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:15:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:15:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_phy_init_script [2021-11-25 20:15:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_phy_init_script [2021-11-25 20:15:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 20:15:42,168 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 20:15:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-25 20:15:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-25 20:15:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_request_irq [2021-11-25 20:15:42,169 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_request_irq [2021-11-25 20:15:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:15:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:15:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_release_eeprom [2021-11-25 20:15:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_release_eeprom [2021-11-25 20:15:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw [2021-11-25 20:15:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw [2021-11-25 20:15:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_irq_disable [2021-11-25 20:15:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_irq_disable [2021-11-25 20:15:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2021-11-25 20:15:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2021-11-25 20:15:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 20:15:42,171 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 20:15:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_tx_ring [2021-11-25 20:15:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_tx_ring [2021-11-25 20:15:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure __e1000_shutdown [2021-11-25 20:15:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __e1000_shutdown [2021-11-25 20:15:42,172 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_free_tx_resources [2021-11-25 20:15:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_free_tx_resources [2021-11-25 20:15:42,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:15:42,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:15:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-25 20:15:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-25 20:15:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:15:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-25 20:15:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:15:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:15:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_manageability [2021-11-25 20:15:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_manageability [2021-11-25 20:15:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure dql_avail [2021-11-25 20:15:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure dql_avail [2021-11-25 20:15:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:15:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:15:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_wol_exclusion [2021-11-25 20:15:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_wol_exclusion [2021-11-25 20:15:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:15:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:15:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-25 20:15:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-25 20:15:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 20:15:42,192 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 20:15:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 20:15:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:15:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-25 20:15:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-25 20:15:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_clean_rx_ring [2021-11-25 20:15:42,193 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_clean_rx_ring [2021-11-25 20:15:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:15:42,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:15:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-25 20:15:45,119 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:15:45,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:15:46,775 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:16:56,932 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:17:06,852 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:17:06,852 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-25 20:17:06,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:06 BoogieIcfgContainer [2021-11-25 20:17:06,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:17:06,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:17:06,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:17:06,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:17:06,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:15:25" (1/3) ... [2021-11-25 20:17:06,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389c53fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:17:06, skipping insertion in model container [2021-11-25 20:17:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:15:38" (2/3) ... [2021-11-25 20:17:06,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389c53fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:17:06, skipping insertion in model container [2021-11-25 20:17:06,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:17:06" (3/3) ... [2021-11-25 20:17:06,880 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-usb-dev_drivers-net-ethernet-intel-e1000-e1000.cil.i [2021-11-25 20:17:06,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:17:06,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 20:17:07,085 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:17:07,094 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 [2021-11-25 20:17:07,094 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 20:17:07,277 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) [2021-11-25 20:17:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 20:17:07,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:07,286 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] [2021-11-25 20:17:07,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:07,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1382324443, now seen corresponding path program 1 times [2021-11-25 20:17:07,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:07,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339972969] [2021-11-25 20:17:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:07,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 20:17:09,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339972969] [2021-11-25 20:17:09,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339972969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:09,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:09,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:17:09,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21742568] [2021-11-25 20:17:09,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:09,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:17:09,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:17:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:09,126 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) [2021-11-25 20:17:12,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:23,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:25,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:27,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:33,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:42,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:45,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:48,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:50,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:17:50,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:17:50,839 INFO L93 Difference]: Finished difference Result 17301 states and 25972 transitions. [2021-11-25 20:17:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:17:50,841 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 [2021-11-25 20:17:50,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:17:51,014 INFO L225 Difference]: With dead ends: 17301 [2021-11-25 20:17:51,015 INFO L226 Difference]: Without dead ends: 10728 [2021-11-25 20:17:51,092 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 [2021-11-25 20:17:51,096 INFO L933 BasicCegarLoop]: 10867 mSDtfsCounter, 6294 mSDsluCounter, 21477 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6298 SdHoareTripleChecker+Valid, 30704 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:17:51,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6298 Valid, 30704 Invalid, 2496 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2486 Invalid, 9 Unknown, 0 Unchecked, 40.7s Time] [2021-11-25 20:17:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10728 states. [2021-11-25 20:17:52,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10728 to 10720. [2021-11-25 20:17:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 6817 states have (on average 1.3281502127035352) internal successors, (9054), 6976 states have internal predecessors, (9054), 3477 states have call successors, (3477), 425 states have call predecessors, (3477), 424 states have return successors, (3477), 3460 states have call predecessors, (3477), 3475 states have call successors, (3477) [2021-11-25 20:17:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 16008 transitions. [2021-11-25 20:17:52,743 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 16008 transitions. Word has length 34 [2021-11-25 20:17:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:17:52,744 INFO L470 AbstractCegarLoop]: Abstraction has 10720 states and 16008 transitions. [2021-11-25 20:17:52,744 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) [2021-11-25 20:17:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 16008 transitions. [2021-11-25 20:17:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 20:17:52,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:17:52,750 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] [2021-11-25 20:17:52,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:17:52,751 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:17:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:17:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -787865769, now seen corresponding path program 1 times [2021-11-25 20:17:52,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:17:52,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56675917] [2021-11-25 20:17:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:17:52,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:17:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:17:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-25 20:17:54,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:17:54,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56675917] [2021-11-25 20:17:54,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56675917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:17:54,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:17:54,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:17:54,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538231562] [2021-11-25 20:17:54,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:17:54,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:17:54,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:17:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:17:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:17:54,357 INFO L87 Difference]: Start difference. First operand 10720 states and 16008 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 20:17:57,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:09,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:11,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:13,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:17,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:27,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:28,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:18:28,025 INFO L93 Difference]: Finished difference Result 11048 states and 16539 transitions. [2021-11-25 20:18:28,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:18:28,026 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 [2021-11-25 20:18:28,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:18:28,204 INFO L225 Difference]: With dead ends: 11048 [2021-11-25 20:18:28,204 INFO L226 Difference]: Without dead ends: 11046 [2021-11-25 20:18:28,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:18:28,213 INFO L933 BasicCegarLoop]: 10904 mSDtfsCounter, 6612 mSDsluCounter, 21503 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 71 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6673 SdHoareTripleChecker+Valid, 30756 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:18:28,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6673 Valid, 30756 Invalid, 2633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 2556 Invalid, 6 Unknown, 0 Unchecked, 33.1s Time] [2021-11-25 20:18:28,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11046 states. [2021-11-25 20:18:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11046 to 10720. [2021-11-25 20:18:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 6817 states have (on average 1.3280035206102392) internal successors, (9053), 6976 states have internal predecessors, (9053), 3477 states have call successors, (3477), 425 states have call predecessors, (3477), 424 states have return successors, (3477), 3460 states have call predecessors, (3477), 3475 states have call successors, (3477) [2021-11-25 20:18:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 16007 transitions. [2021-11-25 20:18:29,289 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 16007 transitions. Word has length 85 [2021-11-25 20:18:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:18:29,290 INFO L470 AbstractCegarLoop]: Abstraction has 10720 states and 16007 transitions. [2021-11-25 20:18:29,291 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) [2021-11-25 20:18:29,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 16007 transitions. [2021-11-25 20:18:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-25 20:18:29,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:18:29,318 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] [2021-11-25 20:18:29,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:18:29,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:18:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:18:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1392974238, now seen corresponding path program 1 times [2021-11-25 20:18:29,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:18:29,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128843743] [2021-11-25 20:18:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:18:29,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:18:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:18:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-25 20:18:31,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:18:31,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128843743] [2021-11-25 20:18:31,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128843743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:18:31,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:18:31,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:18:31,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381041281] [2021-11-25 20:18:31,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:18:31,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:18:31,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:18:31,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:18:31,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:18:31,102 INFO L87 Difference]: Start difference. First operand 10720 states and 16007 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 20:18:33,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:35,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:38,239 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:41,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:46,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:48,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:50,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:57,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:18:59,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:03,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:07,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:09,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:10,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:10,490 INFO L93 Difference]: Finished difference Result 16343 states and 24488 transitions. [2021-11-25 20:19:10,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:19:10,490 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 [2021-11-25 20:19:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:10,606 INFO L225 Difference]: With dead ends: 16343 [2021-11-25 20:19:10,607 INFO L226 Difference]: Without dead ends: 16341 [2021-11-25 20:19:10,625 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 [2021-11-25 20:19:10,626 INFO L933 BasicCegarLoop]: 11130 mSDtfsCounter, 7859 mSDsluCounter, 21901 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 140 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7977 SdHoareTripleChecker+Valid, 31362 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:10,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7977 Valid, 31362 Invalid, 2799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [140 Valid, 2651 Invalid, 8 Unknown, 0 Unchecked, 38.8s Time] [2021-11-25 20:19:10,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16341 states. [2021-11-25 20:19:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16341 to 15340. [2021-11-25 20:19:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 9768 states have (on average 1.3287264537264538) internal successors, (12979), 9990 states have internal predecessors, (12979), 4954 states have call successors, (4954), 617 states have call predecessors, (4954), 616 states have return successors, (4954), 4932 states have call predecessors, (4954), 4952 states have call successors, (4954) [2021-11-25 20:19:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 22887 transitions. [2021-11-25 20:19:11,913 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 22887 transitions. Word has length 190 [2021-11-25 20:19:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:11,916 INFO L470 AbstractCegarLoop]: Abstraction has 15340 states and 22887 transitions. [2021-11-25 20:19:11,916 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) [2021-11-25 20:19:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 22887 transitions. [2021-11-25 20:19:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-25 20:19:11,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:11,942 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:19:11,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:19:11,942 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1778137633, now seen corresponding path program 1 times [2021-11-25 20:19:11,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:11,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52038566] [2021-11-25 20:19:11,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:11,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-25 20:19:13,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52038566] [2021-11-25 20:19:13,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52038566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:13,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:13,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:19:13,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104875526] [2021-11-25 20:19:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:13,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:19:13,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:19:13,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:19:13,515 INFO L87 Difference]: Start difference. First operand 15340 states and 22887 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:19:16,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:22,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:24,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:27,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:31,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:39,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:43,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:45,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:19:46,135 INFO L93 Difference]: Finished difference Result 15386 states and 22944 transitions. [2021-11-25 20:19:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:19:46,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 243 [2021-11-25 20:19:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:19:46,237 INFO L225 Difference]: With dead ends: 15386 [2021-11-25 20:19:46,237 INFO L226 Difference]: Without dead ends: 15354 [2021-11-25 20:19:46,258 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 [2021-11-25 20:19:46,259 INFO L933 BasicCegarLoop]: 10599 mSDtfsCounter, 6859 mSDsluCounter, 21161 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6861 SdHoareTripleChecker+Valid, 30156 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:19:46,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6861 Valid, 30156 Invalid, 2422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2415 Invalid, 7 Unknown, 0 Unchecked, 32.2s Time] [2021-11-25 20:19:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15354 states. [2021-11-25 20:19:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15354 to 15319. [2021-11-25 20:19:47,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15319 states, 9758 states have (on average 1.328653412584546) internal successors, (12965), 9978 states have internal predecessors, (12965), 4942 states have call successors, (4942), 617 states have call predecessors, (4942), 617 states have return successors, (4944), 4922 states have call predecessors, (4944), 4940 states have call successors, (4944) [2021-11-25 20:19:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 22851 transitions. [2021-11-25 20:19:47,399 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 22851 transitions. Word has length 243 [2021-11-25 20:19:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:19:47,402 INFO L470 AbstractCegarLoop]: Abstraction has 15319 states and 22851 transitions. [2021-11-25 20:19:47,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2021-11-25 20:19:47,402 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 22851 transitions. [2021-11-25 20:19:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-11-25 20:19:47,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:19:47,516 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] [2021-11-25 20:19:47,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:19:47,517 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:19:47,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:19:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2007428456, now seen corresponding path program 1 times [2021-11-25 20:19:47,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:19:47,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51601508] [2021-11-25 20:19:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:47,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:19:48,303 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:19:48,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956205273] [2021-11-25 20:19:48,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:19:48,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:19:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:19:48,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:19:48,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:19:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:19:53,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 21809 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:19:53,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:19:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-11-25 20:19:54,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:19:54,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:19:54,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51601508] [2021-11-25 20:19:54,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:19:54,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956205273] [2021-11-25 20:19:54,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956205273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:19:54,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:19:54,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:19:54,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791310278] [2021-11-25 20:19:54,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:19:54,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:19:54,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:19:54,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:19:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:19:54,722 INFO L87 Difference]: Start difference. First operand 15319 states and 22851 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) [2021-11-25 20:19:57,052 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:19:59,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:03,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:06,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:08,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:10,054 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:12,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:16,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:21,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:23,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:26,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:28,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:30,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:20:31,038 INFO L93 Difference]: Finished difference Result 23167 states and 34744 transitions. [2021-11-25 20:20:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:20:31,039 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 [2021-11-25 20:20:31,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:20:31,166 INFO L225 Difference]: With dead ends: 23167 [2021-11-25 20:20:31,167 INFO L226 Difference]: Without dead ends: 16655 [2021-11-25 20:20:31,239 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 [2021-11-25 20:20:31,240 INFO L933 BasicCegarLoop]: 10209 mSDtfsCounter, 1141 mSDsluCounter, 10038 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 19448 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:20:31,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 19448 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1741 Invalid, 10 Unknown, 0 Unchecked, 35.8s Time] [2021-11-25 20:20:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16655 states. [2021-11-25 20:20:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16655 to 15324. [2021-11-25 20:20:32,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15324 states, 9762 states have (on average 1.328621184183569) internal successors, (12970), 9982 states have internal predecessors, (12970), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 617 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 20:20:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15324 states to 15324 states and 22858 transitions. [2021-11-25 20:20:32,722 INFO L78 Accepts]: Start accepts. Automaton has 15324 states and 22858 transitions. Word has length 548 [2021-11-25 20:20:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:20:32,728 INFO L470 AbstractCegarLoop]: Abstraction has 15324 states and 22858 transitions. [2021-11-25 20:20:32,728 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) [2021-11-25 20:20:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15324 states and 22858 transitions. [2021-11-25 20:20:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2021-11-25 20:20:32,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:20:32,852 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] [2021-11-25 20:20:32,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:20:33,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:33,077 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:20:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:20:33,078 INFO L85 PathProgramCache]: Analyzing trace with hash 868854894, now seen corresponding path program 1 times [2021-11-25 20:20:33,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:20:33,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865276239] [2021-11-25 20:20:33,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:33,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:20:33,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:20:33,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394020458] [2021-11-25 20:20:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:20:33,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:20:33,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:20:33,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:20:33,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:20:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:20:39,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 22279 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:20:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:20:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2021-11-25 20:20:40,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:20:40,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:20:40,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865276239] [2021-11-25 20:20:40,721 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:20:40,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394020458] [2021-11-25 20:20:40,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394020458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:20:40,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:20:40,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:20:40,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623746431] [2021-11-25 20:20:40,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:20:40,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:20:40,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:20:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:20:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:20:40,725 INFO L87 Difference]: Start difference. First operand 15324 states and 22858 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) [2021-11-25 20:20:43,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:51,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:54,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:20:57,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:01,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:07,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:09,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:11,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:12,609 INFO L93 Difference]: Finished difference Result 27288 states and 40806 transitions. [2021-11-25 20:21:12,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:21:12,610 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 [2021-11-25 20:21:12,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:12,701 INFO L225 Difference]: With dead ends: 27288 [2021-11-25 20:21:12,701 INFO L226 Difference]: Without dead ends: 16172 [2021-11-25 20:21:12,760 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 [2021-11-25 20:21:12,761 INFO L933 BasicCegarLoop]: 9439 mSDtfsCounter, 472 mSDsluCounter, 19907 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 113 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 27724 SdHoareTripleChecker+Invalid, 2630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:12,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 27724 Invalid, 2630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2510 Invalid, 7 Unknown, 0 Unchecked, 31.3s Time] [2021-11-25 20:21:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16172 states. [2021-11-25 20:21:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16172 to 15328. [2021-11-25 20:21:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15328 states, 9766 states have (on average 1.3284865861150932) internal successors, (12974), 9986 states have internal predecessors, (12974), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 617 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 20:21:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15328 states to 15328 states and 22862 transitions. [2021-11-25 20:21:13,892 INFO L78 Accepts]: Start accepts. Automaton has 15328 states and 22862 transitions. Word has length 592 [2021-11-25 20:21:13,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:13,893 INFO L470 AbstractCegarLoop]: Abstraction has 15328 states and 22862 transitions. [2021-11-25 20:21:13,893 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) [2021-11-25 20:21:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15328 states and 22862 transitions. [2021-11-25 20:21:14,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2021-11-25 20:21:14,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:14,125 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] [2021-11-25 20:21:14,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:21:14,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:21:14,341 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:21:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1240552840, now seen corresponding path program 1 times [2021-11-25 20:21:14,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:14,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355853703] [2021-11-25 20:21:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:14,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:15,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:15,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355853703] [2021-11-25 20:21:15,722 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:21:15,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419772841] [2021-11-25 20:21:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:15,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:21:15,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:15,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:21:15,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:21:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:21,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 22542 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:21:21,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:21:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2021-11-25 20:21:22,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:21:22,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419772841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:22,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:22,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:21:22,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145261865] [2021-11-25 20:21:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:22,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:21:22,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:21:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:21:22,814 INFO L87 Difference]: Start difference. First operand 15328 states and 22862 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) [2021-11-25 20:21:24,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:27,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:28,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:34,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:35,921 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:39,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:41,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:44,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:53,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:56,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:58,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:21:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:59,055 INFO L93 Difference]: Finished difference Result 26792 states and 40035 transitions. [2021-11-25 20:21:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:21:59,056 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 [2021-11-25 20:21:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:59,132 INFO L225 Difference]: With dead ends: 26792 [2021-11-25 20:21:59,132 INFO L226 Difference]: Without dead ends: 15672 [2021-11-25 20:21:59,187 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 [2021-11-25 20:21:59,188 INFO L933 BasicCegarLoop]: 9238 mSDtfsCounter, 343 mSDsluCounter, 19683 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 123 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 27319 SdHoareTripleChecker+Invalid, 2573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:59,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 27319 Invalid, 2573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2442 Invalid, 8 Unknown, 0 Unchecked, 35.8s Time] [2021-11-25 20:21:59,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15672 states. [2021-11-25 20:22:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15672 to 15332. [2021-11-25 20:22:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 9770 states have (on average 1.3283520982599795) internal successors, (12978), 9990 states have internal predecessors, (12978), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 617 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 20:22:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 22866 transitions. [2021-11-25 20:22:00,384 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 22866 transitions. Word has length 610 [2021-11-25 20:22:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:00,385 INFO L470 AbstractCegarLoop]: Abstraction has 15332 states and 22866 transitions. [2021-11-25 20:22:00,386 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) [2021-11-25 20:22:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 22866 transitions. [2021-11-25 20:22:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2021-11-25 20:22:00,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:00,446 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] [2021-11-25 20:22:00,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:22:00,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:22:00,661 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2039050071, now seen corresponding path program 1 times [2021-11-25 20:22:00,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475506122] [2021-11-25 20:22:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:00,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:01,916 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:22:01,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161867087] [2021-11-25 20:22:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:01,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:22:01,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:22:01,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:22:01,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:22:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:07,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 22588 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:22:07,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:22:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2021-11-25 20:22:08,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:22:08,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475506122] [2021-11-25 20:22:08,758 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:22:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161867087] [2021-11-25 20:22:08,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161867087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:08,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:08,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:22:08,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606892652] [2021-11-25 20:22:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:08,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:22:08,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:22:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:22:08,761 INFO L87 Difference]: Start difference. First operand 15332 states and 22866 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) [2021-11-25 20:22:11,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:19,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:22,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:25,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:29,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:34,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:37,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:39,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:42,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:44,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:44,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:44,578 INFO L93 Difference]: Finished difference Result 27284 states and 40793 transitions. [2021-11-25 20:22:44,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:22:44,579 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 [2021-11-25 20:22:44,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:44,658 INFO L225 Difference]: With dead ends: 27284 [2021-11-25 20:22:44,658 INFO L226 Difference]: Without dead ends: 16160 [2021-11-25 20:22:44,713 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 [2021-11-25 20:22:44,713 INFO L933 BasicCegarLoop]: 9442 mSDtfsCounter, 354 mSDsluCounter, 20070 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 109 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 27872 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:44,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 27872 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2532 Invalid, 9 Unknown, 0 Unchecked, 35.2s Time] [2021-11-25 20:22:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16160 states. [2021-11-25 20:22:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16160 to 15336. [2021-11-25 20:22:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15336 states, 9774 states have (on average 1.3282177204829138) internal successors, (12982), 9994 states have internal predecessors, (12982), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 617 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 20:22:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15336 states to 15336 states and 22870 transitions. [2021-11-25 20:22:45,933 INFO L78 Accepts]: Start accepts. Automaton has 15336 states and 22870 transitions. Word has length 613 [2021-11-25 20:22:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:45,935 INFO L470 AbstractCegarLoop]: Abstraction has 15336 states and 22870 transitions. [2021-11-25 20:22:45,936 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) [2021-11-25 20:22:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 15336 states and 22870 transitions. [2021-11-25 20:22:46,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2021-11-25 20:22:46,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:46,003 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] [2021-11-25 20:22:46,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:22:46,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 20:22:46,229 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:46,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1188824326, now seen corresponding path program 1 times [2021-11-25 20:22:46,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:46,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927703058] [2021-11-25 20:22:46,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:46,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:48,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:22:48,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607159551] [2021-11-25 20:22:48,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:48,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:22:48,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:22:48,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:22:48,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:22:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:54,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 22701 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:22:54,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:22:56,105 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-25 20:22:56,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:22:56,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:56,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927703058] [2021-11-25 20:22:56,106 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:22:56,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607159551] [2021-11-25 20:22:56,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607159551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:56,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:56,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:22:56,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254222113] [2021-11-25 20:22:56,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:56,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:22:56,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:22:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:22:56,110 INFO L87 Difference]: Start difference. First operand 15336 states and 22870 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) [2021-11-25 20:22:59,047 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:05,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:08,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:10,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:13,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:17,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:25,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:26,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:26,131 INFO L93 Difference]: Finished difference Result 26808 states and 40051 transitions. [2021-11-25 20:23:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:23:26,132 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 [2021-11-25 20:23:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:26,231 INFO L225 Difference]: With dead ends: 26808 [2021-11-25 20:23:26,231 INFO L226 Difference]: Without dead ends: 15680 [2021-11-25 20:23:26,293 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 [2021-11-25 20:23:26,294 INFO L933 BasicCegarLoop]: 9243 mSDtfsCounter, 343 mSDsluCounter, 19683 mSDsCounter, 0 mSdLazyCounter, 2442 mSolverCounterSat, 123 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 27323 SdHoareTripleChecker+Invalid, 2571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2442 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:26,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 27323 Invalid, 2571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2442 Invalid, 6 Unknown, 0 Unchecked, 29.5s Time] [2021-11-25 20:23:26,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15680 states. [2021-11-25 20:23:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15680 to 15340. [2021-11-25 20:23:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 9778 states have (on average 1.3280834526488035) internal successors, (12986), 9998 states have internal predecessors, (12986), 4943 states have call successors, (4943), 617 states have call predecessors, (4943), 617 states have return successors, (4945), 4923 states have call predecessors, (4945), 4941 states have call successors, (4945) [2021-11-25 20:23:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 22874 transitions. [2021-11-25 20:23:27,351 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 22874 transitions. Word has length 632 [2021-11-25 20:23:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:27,352 INFO L470 AbstractCegarLoop]: Abstraction has 15340 states and 22874 transitions. [2021-11-25 20:23:27,352 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) [2021-11-25 20:23:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 22874 transitions. [2021-11-25 20:23:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2021-11-25 20:23:27,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:27,415 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] [2021-11-25 20:23:27,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:27,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:27,641 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:27,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash 547377721, now seen corresponding path program 1 times [2021-11-25 20:23:27,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:27,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307799646] [2021-11-25 20:23:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:27,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:28,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:23:28,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050390671] [2021-11-25 20:23:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:28,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:28,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:28,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_adca7386-92b9-4477-a0b0-c722ac7028a9/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:23:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:35,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 22767 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 20:23:35,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 138 proven. 5 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2021-11-25 20:23:36,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:23:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2021-11-25 20:23:37,290 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307799646] [2021-11-25 20:23:37,290 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:23:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050390671] [2021-11-25 20:23:37,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050390671] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:23:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002732187] [2021-11-25 20:23:37,333 INFO L159 IcfgInterpreter]: Started Sifa with 464 locations of interest [2021-11-25 20:23:37,333 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:23:37,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:23:37,346 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:23:37,346 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs