./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.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_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/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_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/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_a31451b6-2b59-4129-8750-51a2393607b3/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 2c36a9df364179ddc8d27c6acbee2fb959ee84241a663b80989702c8a045d9c9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:21:56,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:21:56,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:21:56,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:21:56,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:21:56,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:21:56,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:21:56,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:21:56,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:21:56,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:21:56,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:21:56,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:21:56,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:21:56,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:21:56,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:21:56,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:21:56,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:21:56,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:21:56,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:21:56,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:21:56,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:21:56,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:21:56,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:21:56,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:21:56,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:21:56,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:21:56,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:21:56,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:21:56,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:21:56,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:21:56,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:21:56,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:21:56,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:21:56,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:21:56,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:21:56,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:21:56,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:21:56,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:21:56,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:21:56,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:21:56,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:21:56,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:21:56,569 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:21:56,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:21:56,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:21:56,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:21:56,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:21:56,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:21:56,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:21:56,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:21:56,576 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:21:56,576 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:21:56,576 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:21:56,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:21:56,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:21:56,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:21:56,577 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:21:56,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:21:56,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:21:56,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:21:56,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:21:56,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:21:56,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:21:56,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:21:56,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:21:56,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:21:56,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:21:56,580 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:21:56,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:21:56,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:21:56,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:21:56,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:56,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:21:56,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:21:56,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:21:56,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:21:56,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:21:56,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:21:56,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:21:56,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:21:56,583 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_a31451b6-2b59-4129-8750-51a2393607b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c36a9df364179ddc8d27c6acbee2fb959ee84241a663b80989702c8a045d9c9 [2021-11-25 20:21:56,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:21:56,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:21:56,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:21:56,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:21:56,920 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:21:56,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-25 20:21:57,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/data/358e512c6/7e152466a478467abd56486c4c64fd9a/FLAG74541bf6a [2021-11-25 20:21:58,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:21:58,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-25 20:21:58,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/data/358e512c6/7e152466a478467abd56486c4c64fd9a/FLAG74541bf6a [2021-11-25 20:21:58,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/data/358e512c6/7e152466a478467abd56486c4c64fd9a [2021-11-25 20:21:58,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:21:58,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:21:58,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:58,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:21:58,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:21:58,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:58" (1/1) ... [2021-11-25 20:21:58,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c282395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:58, skipping insertion in model container [2021-11-25 20:21:58,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:58" (1/1) ... [2021-11-25 20:21:58,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:21:58,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:22:00,949 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_a31451b6-2b59-4129-8750-51a2393607b3/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i[222866,222879] [2021-11-25 20:22:04,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:22:04,316 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:22:04,469 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_a31451b6-2b59-4129-8750-51a2393607b3/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i[222866,222879] [2021-11-25 20:22:04,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:22:05,402 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:22:05,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05 WrapperNode [2021-11-25 20:22:05,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:22:05,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:22:05,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:22:05,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:22:05,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:05,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,124 INFO L137 Inliner]: procedures = 597, calls = 7256, calls flagged for inlining = 272, calls inlined = 259, statements flattened = 14780 [2021-11-25 20:22:06,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:22:06,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:22:06,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:22:06,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:22:06,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:22:06,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:22:06,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:22:06,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:22:06,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (1/1) ... [2021-11-25 20:22:06,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:22:06,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:22:06,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:22:06,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:22:06,923 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 20:22:06,923 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 20:22:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-25 20:22:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-25 20:22:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-25 20:22:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_irq [2021-11-25 20:22:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_irq [2021-11-25 20:22:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-25 20:22:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-25 20:22:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-25 20:22:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-25 20:22:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure ql_enable_completion_interrupt [2021-11-25 20:22:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_enable_completion_interrupt [2021-11-25 20:22:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:22:06,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:22:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_both_serdes [2021-11-25 20:22:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_both_serdes [2021-11-25 20:22:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg [2021-11-25 20:22:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg [2021-11-25 20:22:06,926 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_reset [2021-11-25 20:22:06,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_reset [2021-11-25 20:22:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2021-11-25 20:22:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2021-11-25 20:22:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-25 20:22:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-25 20:22:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:22:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:22:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-25 20:22:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-25 20:22:06,928 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_send [2021-11-25 20:22:06,928 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_send [2021-11-25 20:22:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-25 20:22:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-25 20:22:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-25 20:22:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-25 20:22:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-25 20:22:06,929 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-25 20:22:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:22:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:22:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 20:22:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 20:22:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 20:22:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 20:22:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_regs_len [2021-11-25 20:22:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_regs_len [2021-11-25 20:22:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_vlan_rx_kill_vid [2021-11-25 20:22:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_vlan_rx_kill_vid [2021-11-25 20:22:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:22:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:22:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-25 20:22:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-25 20:22:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_shutdown [2021-11-25 20:22:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_shutdown [2021-11-25 20:22:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_all [2021-11-25 20:22:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_all [2021-11-25 20:22:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_mac_hdr_len [2021-11-25 20:22:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_mac_hdr_len [2021-11-25 20:22:06,934 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mailbox_command [2021-11-25 20:22:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mailbox_command [2021-11-25 20:22:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-25 20:22:06,935 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-25 20:22:06,935 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:22:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:22:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_irq_mask [2021-11-25 20:22:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_irq_mask [2021-11-25 20:22:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:22:06,936 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:22:06,936 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:22:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:22:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_14 [2021-11-25 20:22:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_14 [2021-11-25 20:22:06,937 INFO L130 BoogieDeclarations]: Found specification of procedure ql_dump_risc_ram_area [2021-11-25 20:22:06,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_dump_risc_ram_area [2021-11-25 20:22:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:22:06,938 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:22:06,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-25 20:22:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_other_func_reg [2021-11-25 20:22:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_other_func_reg [2021-11-25 20:22:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure __qlge_vlan_rx_add_vid [2021-11-25 20:22:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __qlge_vlan_rx_add_vid [2021-11-25 20:22:06,939 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:22:06,939 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:22:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-25 20:22:06,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-25 20:22:06,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:22:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-25 20:22:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-25 20:22:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_xgmac_regs [2021-11-25 20:22:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_xgmac_regs [2021-11-25 20:22:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_asic_error [2021-11-25 20:22:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_asic_error [2021-11-25 20:22:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_buffer_queues [2021-11-25 20:22:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_buffer_queues [2021-11-25 20:22:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_cam_entries [2021-11-25 20:22:06,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_cam_entries [2021-11-25 20:22:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_mem_resources [2021-11-25 20:22:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_mem_resources [2021-11-25 20:22:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_xgmac_reg [2021-11-25 20:22:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_xgmac_reg [2021-11-25 20:22:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 20:22:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 20:22:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_up [2021-11-25 20:22:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_up [2021-11-25 20:22:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure ql_eeh_close [2021-11-25 20:22:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_eeh_close [2021-11-25 20:22:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-25 20:22:06,945 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_receive_skb [2021-11-25 20:22:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:22:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:22:06,946 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr_reg [2021-11-25 20:22:06,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr_reg [2021-11-25 20:22:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:22:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:22:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure skb_record_rx_queue [2021-11-25 20:22:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_record_rx_queue [2021-11-25 20:22:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-25 20:22:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-25 20:22:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:22:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_serdes_reg [2021-11-25 20:22:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_serdes_reg [2021-11-25 20:22:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 20:22:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 20:22:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:22:06,959 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:22:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:22:06,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:22:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure ql_build_coredump_seg_header [2021-11-25 20:22:06,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_build_coredump_seg_header [2021-11-25 20:22:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_close [2021-11-25 20:22:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_close [2021-11-25 20:22:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mb_sts [2021-11-25 20:22:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mb_sts [2021-11-25 20:22:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:22:06,960 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_open [2021-11-25 20:22:06,960 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_open [2021-11-25 20:22:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:22:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:22:06,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:22:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-25 20:22:06,961 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-25 20:22:06,961 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2021-11-25 20:22:06,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2021-11-25 20:22:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:22:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:22:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-25 20:22:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-25 20:22:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_probe [2021-11-25 20:22:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_probe [2021-11-25 20:22:06,962 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-25 20:22:06,962 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-25 20:22:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_buffers [2021-11-25 20:22:06,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_buffers [2021-11-25 20:22:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2021-11-25 20:22:06,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2021-11-25 20:22:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-25 20:22:06,963 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-25 20:22:06,963 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write32 [2021-11-25 20:22:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write32 [2021-11-25 20:22:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cam_route_initialize [2021-11-25 20:22:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cam_route_initialize [2021-11-25 20:22:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:22:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:22:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:22:06,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:22:06,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-25 20:22:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_other_func_reg_rdy [2021-11-25 20:22:06,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_other_func_reg_rdy [2021-11-25 20:22:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_trylock [2021-11-25 20:22:06,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_trylock [2021-11-25 20:22:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_port_cfg [2021-11-25 20:22:06,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_port_cfg [2021-11-25 20:22:06,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:22:06,966 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_mpi_reg [2021-11-25 20:22:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_mpi_reg [2021-11-25 20:22:06,966 INFO L130 BoogieDeclarations]: Found specification of procedure __get_order [2021-11-25 20:22:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_order [2021-11-25 20:22:06,966 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_spinlock [2021-11-25 20:22:06,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_spinlock [2021-11-25 20:22:06,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:22:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-25 20:22:06,967 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-25 20:22:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_get_stats [2021-11-25 20:22:06,967 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_get_stats [2021-11-25 20:22:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:22:06,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:22:06,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:22:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:22:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure ql_sem_unlock [2021-11-25 20:22:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_sem_unlock [2021-11-25 20:22:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8012_flash_params [2021-11-25 20:22:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8012_flash_params [2021-11-25 20:22:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:22:06,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:22:06,968 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_slot_reset [2021-11-25 20:22:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_slot_reset [2021-11-25 20:22:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:22:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:22:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_serdes_reg [2021-11-25 20:22:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_serdes_reg [2021-11-25 20:22:06,969 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:22:06,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:22:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_completion_interrupt [2021-11-25 20:22:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_completion_interrupt [2021-11-25 20:22:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_fill_page_desc [2021-11-25 20:22:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_fill_page_desc [2021-11-25 20:22:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 20:22:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 20:22:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clear_routing_entries [2021-11-25 20:22:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clear_routing_entries [2021-11-25 20:22:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-25 20:22:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-25 20:22:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_off [2021-11-25 20:22:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_off [2021-11-25 20:22:06,971 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:22:06,971 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:22:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:22:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:22:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size [2021-11-25 20:22:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size [2021-11-25 20:22:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_tx_timeout [2021-11-25 20:22:06,972 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_tx_timeout [2021-11-25 20:22:06,972 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8000_port_initialize [2021-11-25 20:22:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8000_port_initialize [2021-11-25 20:22:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 20:22:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 20:22:07,115 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mpi_regs [2021-11-25 20:22:07,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mpi_regs [2021-11-25 20:22:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 20:22:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 20:22:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 20:22:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 20:22:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_mac_address [2021-11-25 20:22:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_mac_address [2021-11-25 20:22:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:22:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:22:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure ql_8012_port_initialize [2021-11-25 20:22:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_8012_port_initialize [2021-11-25 20:22:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-25 20:22:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_flash_word [2021-11-25 20:22:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_flash_word [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_subqueue [2021-11-25 20:22:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_subqueue [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 20:22:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ql_release_adapter_resources [2021-11-25 20:22:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_release_adapter_resources [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:22:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:22:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:22:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2021-11-25 20:22:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2021-11-25 20:22:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 20:22:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 20:22:07,118 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 20:22:07,118 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 20:22:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure ql_free_rx_resources [2021-11-25 20:22:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_free_rx_resources [2021-11-25 20:22:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-25 20:22:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-25 20:22:07,118 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-25 20:22:07,118 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:22:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure ql_disable_interrupts [2021-11-25 20:22:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_disable_interrupts [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure ql_soft_reset_mpi_risc [2021-11-25 20:22:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_soft_reset_mpi_risc [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-25 20:22:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_remove [2021-11-25 20:22:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_remove [2021-11-25 20:22:07,119 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cq_idx [2021-11-25 20:22:07,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cq_idx [2021-11-25 20:22:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure ql_link_on [2021-11-25 20:22:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_link_on [2021-11-25 20:22:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure napi_gro_receive [2021-11-25 20:22:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_gro_receive [2021-11-25 20:22:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_multicast_list [2021-11-25 20:22:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_multicast_list [2021-11-25 20:22:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 20:22:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 20:22:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-25 20:22:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-25 20:22:07,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2021-11-25 20:22:07,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2021-11-25 20:22:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-25 20:22:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-25 20:22:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:22:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:22:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-25 20:22:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-25 20:22:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure ql_tx_ring_clean [2021-11-25 20:22:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_tx_ring_clean [2021-11-25 20:22:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 20:22:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 20:22:07,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 20:22:07,121 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 20:22:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2021-11-25 20:22:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2021-11-25 20:22:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure skb_fill_page_desc [2021-11-25 20:22:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_fill_page_desc [2021-11-25 20:22:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:22:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:22:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_mpi_reg [2021-11-25 20:22:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_mpi_reg [2021-11-25 20:22:07,122 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:22:07,122 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:22:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure ql_clean_inbound_rx_ring [2021-11-25 20:22:07,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_clean_inbound_rx_ring [2021-11-25 20:22:07,124 INFO L130 BoogieDeclarations]: Found specification of procedure ql_update_cq [2021-11-25 20:22:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_update_cq [2021-11-25 20:22:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-25 20:22:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-25 20:22:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_subqueue [2021-11-25 20:22:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_subqueue [2021-11-25 20:22:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 20:22:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 20:22:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_set_features [2021-11-25 20:22:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_set_features [2021-11-25 20:22:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:22:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 20:22:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 20:22:07,126 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_sbuf [2021-11-25 20:22:07,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_sbuf [2021-11-25 20:22:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-25 20:22:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-25 20:22:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure ql_realign_skb [2021-11-25 20:22:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_realign_skb [2021-11-25 20:22:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:22:07,127 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:22:07,127 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_io_error_detected [2021-11-25 20:22:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_io_error_detected [2021-11-25 20:22:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_routing_entries [2021-11-25 20:22:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_routing_entries [2021-11-25 20:22:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:22:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-11-25 20:22:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-11-25 20:22:07,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-25 20:22:07,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-25 20:22:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure ql_process_mac_split_rx_intr [2021-11-25 20:22:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_process_mac_split_rx_intr [2021-11-25 20:22:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_suspend [2021-11-25 20:22:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_suspend [2021-11-25 20:22:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure __pskb_pull_tail [2021-11-25 20:22:07,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __pskb_pull_tail [2021-11-25 20:22:07,129 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2021-11-25 20:22:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure __vlan_hwaccel_put_tag [2021-11-25 20:22:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __vlan_hwaccel_put_tag [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure ql_validate_flash [2021-11-25 20:22:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_validate_flash [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-25 20:22:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure ql_cancel_all_work_sync [2021-11-25 20:22:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_cancel_all_work_sync [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 20:22:07,130 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 20:22:07,130 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:22:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:22:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 20:22:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 20:22:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_8000_flash_params [2021-11-25 20:22:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_8000_flash_params [2021-11-25 20:22:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 20:22:07,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 20:22:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure ql_check_lb_frame [2021-11-25 20:22:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_check_lb_frame [2021-11-25 20:22:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-25 20:22:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-25 20:22:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 20:22:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 20:22:07,132 INFO L130 BoogieDeclarations]: Found specification of procedure ql_categorize_rx_err [2021-11-25 20:22:07,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_categorize_rx_err [2021-11-25 20:22:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 20:22:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 20:22:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:22:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:22:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 20:22:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 20:22:07,133 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_initialize [2021-11-25 20:22:07,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_initialize [2021-11-25 20:22:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-25 20:22:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-25 20:22:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-25 20:22:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-25 20:22:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_sh_reg [2021-11-25 20:22:07,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_sh_reg [2021-11-25 20:22:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_offset [2021-11-25 20:22:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_offset [2021-11-25 20:22:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:22:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:22:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-25 20:22:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-25 20:22:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_db_reg [2021-11-25 20:22:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_db_reg [2021-11-25 20:22:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:22:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:22:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_get_port_cfg [2021-11-25 20:22:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_get_port_cfg [2021-11-25 20:22:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_vlan_rx_add_vid [2021-11-25 20:22:07,136 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_vlan_rx_add_vid [2021-11-25 20:22:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:22:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-25 20:22:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-25 20:22:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-25 20:22:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-25 20:22:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:22:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:22:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_change_mtu [2021-11-25 20:22:07,137 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_change_mtu [2021-11-25 20:22:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_fix_features [2021-11-25 20:22:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_fix_features [2021-11-25 20:22:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure ql_adapter_down [2021-11-25 20:22:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_adapter_down [2021-11-25 20:22:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 20:22:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 20:22:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-25 20:22:07,138 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-25 20:22:07,138 INFO L130 BoogieDeclarations]: Found specification of procedure ql_queue_fw_error [2021-11-25 20:22:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_queue_fw_error [2021-11-25 20:22:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ql_unmap_send [2021-11-25 20:22:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_unmap_send [2021-11-25 20:22:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-25 20:22:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-25 20:22:07,139 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mpi_handler [2021-11-25 20:22:07,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mpi_handler [2021-11-25 20:22:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_xgmac_reg64 [2021-11-25 20:22:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_xgmac_reg64 [2021-11-25 20:22:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:22:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:22:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 20:22:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_mgmnt_traffic_ctl [2021-11-25 20:22:07,140 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read_other_func_reg [2021-11-25 20:22:07,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read_other_func_reg [2021-11-25 20:22:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-25 20:22:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-25 20:22:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_reg_rdy [2021-11-25 20:22:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_reg_rdy [2021-11-25 20:22:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_routing_reg [2021-11-25 20:22:07,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_routing_reg [2021-11-25 20:22:07,141 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-25 20:22:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-25 20:22:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-25 20:22:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-25 20:22:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_mb_set_led_cfg [2021-11-25 20:22:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_mb_set_led_cfg [2021-11-25 20:22:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_write_cfg [2021-11-25 20:22:07,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_write_cfg [2021-11-25 20:22:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_mac_addr_reg [2021-11-25 20:22:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_mac_addr_reg [2021-11-25 20:22:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure ql_lbq_block_size [2021-11-25 20:22:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_lbq_block_size [2021-11-25 20:22:07,143 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 20:22:07,143 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 20:22:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure ql_own_firmware [2021-11-25 20:22:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_own_firmware [2021-11-25 20:22:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:22:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:22:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure netif_get_num_default_rss_queues [2021-11-25 20:22:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_get_num_default_rss_queues [2021-11-25 20:22:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_curr_lchunk [2021-11-25 20:22:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_curr_lchunk [2021-11-25 20:22:07,144 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_ets_regs [2021-11-25 20:22:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_ets_regs [2021-11-25 20:22:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure ql_wait_cfg [2021-11-25 20:22:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_wait_cfg [2021-11-25 20:22:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:22:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:22:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:22:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:22:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:22:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ql_read32 [2021-11-25 20:22:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_read32 [2021-11-25 20:22:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ql_set_mac_addr [2021-11-25 20:22:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_set_mac_addr [2021-11-25 20:22:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ql_get_intr_states [2021-11-25 20:22:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_get_intr_states [2021-11-25 20:22:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-25 20:22:07,146 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-25 20:22:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure qlge_resume [2021-11-25 20:22:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure qlge_resume [2021-11-25 20:22:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ql_core_dump [2021-11-25 20:22:07,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ql_core_dump [2021-11-25 20:22:08,681 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:22:08,688 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:22:08,819 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:22:33,602 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:22:39,497 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:22:39,497 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:22:39,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:22:39 BoogieIcfgContainer [2021-11-25 20:22:39,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:22:39,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:22:39,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:22:39,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:22:39,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:21:58" (1/3) ... [2021-11-25 20:22:39,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226c0985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:22:39, skipping insertion in model container [2021-11-25 20:22:39,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:22:05" (2/3) ... [2021-11-25 20:22:39,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226c0985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:22:39, skipping insertion in model container [2021-11-25 20:22:39,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:22:39" (3/3) ... [2021-11-25 20:22:39,514 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--qlogic--qlge--qlge.ko-entry_point.cil.out.i [2021-11-25 20:22:39,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:22:39,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:22:39,603 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:22:39,610 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 20:22:39,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:22:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 3690 states, 2260 states have (on average 1.3349557522123894) internal successors, (3017), 2333 states have internal predecessors, (3017), 1196 states have call successors, (1196), 233 states have call predecessors, (1196), 232 states have return successors, (1186), 1171 states have call predecessors, (1186), 1186 states have call successors, (1186) [2021-11-25 20:22:39,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-25 20:22:39,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:39,733 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:39,733 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:22:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:39,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1164215961, now seen corresponding path program 1 times [2021-11-25 20:22:39,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123390604] [2021-11-25 20:22:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:39,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-25 20:22:40,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:40,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123390604] [2021-11-25 20:22:40,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123390604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:40,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:40,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:22:40,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188170498] [2021-11-25 20:22:40,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:40,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:22:40,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:22:40,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:22:40,955 INFO L87 Difference]: Start difference. First operand has 3690 states, 2260 states have (on average 1.3349557522123894) internal successors, (3017), 2333 states have internal predecessors, (3017), 1196 states have call successors, (1196), 233 states have call predecessors, (1196), 232 states have return successors, (1186), 1171 states have call predecessors, (1186), 1186 states have call successors, (1186) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-25 20:22:43,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:45,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:47,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:22:52,177 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:54,231 WARN L534 Checker$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 20:22:55,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:22:57,062 WARN L534 Checker$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 20:23:00,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:05,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:05,034 INFO L93 Difference]: Finished difference Result 10993 states and 16191 transitions. [2021-11-25 20:23:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 64 [2021-11-25 20:23:05,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:05,142 INFO L225 Difference]: With dead ends: 10993 [2021-11-25 20:23:05,142 INFO L226 Difference]: Without dead ends: 7280 [2021-11-25 20:23:05,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:23:05,196 INFO L933 BasicCegarLoop]: 6215 mSDtfsCounter, 5298 mSDsluCounter, 5381 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 8 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5302 SdHoareTripleChecker+Valid, 10983 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:05,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5302 Valid, 10983 Invalid, 1310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 1298 Invalid, 4 Unknown, 0 Unchecked, 23.5s Time] [2021-11-25 20:23:05,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2021-11-25 20:23:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 7279. [2021-11-25 20:23:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7279 states, 4464 states have (on average 1.3263888888888888) internal successors, (5921), 4587 states have internal predecessors, (5921), 2352 states have call successors, (2352), 463 states have call predecessors, (2352), 462 states have return successors, (2355), 2320 states have call predecessors, (2355), 2351 states have call successors, (2355) [2021-11-25 20:23:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7279 states to 7279 states and 10628 transitions. [2021-11-25 20:23:05,802 INFO L78 Accepts]: Start accepts. Automaton has 7279 states and 10628 transitions. Word has length 64 [2021-11-25 20:23:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:05,804 INFO L470 AbstractCegarLoop]: Abstraction has 7279 states and 10628 transitions. [2021-11-25 20:23:05,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-11-25 20:23:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7279 states and 10628 transitions. [2021-11-25 20:23:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 20:23:05,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:05,815 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:23:05,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:23:05,816 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:05,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:05,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2052436526, now seen corresponding path program 1 times [2021-11-25 20:23:05,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:05,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178075890] [2021-11-25 20:23:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:05,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-25 20:23:06,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:06,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178075890] [2021-11-25 20:23:06,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178075890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:06,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:06,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:23:06,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552253585] [2021-11-25 20:23:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:06,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:23:06,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:23:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:23:06,701 INFO L87 Difference]: Start difference. First operand 7279 states and 10628 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:23:08,866 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 20:23:11,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:13,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:20,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:21,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:22,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:28,765 WARN L534 Checker$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 20:23:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:33,005 INFO L93 Difference]: Finished difference Result 14520 states and 21298 transitions. [2021-11-25 20:23:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:23:33,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2021-11-25 20:23:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:33,138 INFO L225 Difference]: With dead ends: 14520 [2021-11-25 20:23:33,138 INFO L226 Difference]: Without dead ends: 14515 [2021-11-25 20:23:33,150 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 20:23:33,152 INFO L933 BasicCegarLoop]: 6424 mSDtfsCounter, 5284 mSDsluCounter, 12515 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5284 SdHoareTripleChecker+Valid, 17612 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:33,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5284 Valid, 17612 Invalid, 2081 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2077 Invalid, 4 Unknown, 0 Unchecked, 25.8s Time] [2021-11-25 20:23:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14515 states. [2021-11-25 20:23:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14515 to 14504. [2021-11-25 20:23:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14504 states, 8889 states have (on average 1.3264709191135111) internal successors, (11791), 9138 states have internal predecessors, (11791), 4690 states have call successors, (4690), 925 states have call predecessors, (4690), 924 states have return successors, (4797), 4624 states have call predecessors, (4797), 4689 states have call successors, (4797) [2021-11-25 20:23:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14504 states to 14504 states and 21278 transitions. [2021-11-25 20:23:34,294 INFO L78 Accepts]: Start accepts. Automaton has 14504 states and 21278 transitions. Word has length 67 [2021-11-25 20:23:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:34,294 INFO L470 AbstractCegarLoop]: Abstraction has 14504 states and 21278 transitions. [2021-11-25 20:23:34,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 20:23:34,296 INFO L276 IsEmpty]: Start isEmpty. Operand 14504 states and 21278 transitions. [2021-11-25 20:23:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 20:23:34,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:34,324 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 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] [2021-11-25 20:23:34,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:23:34,325 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1808302172, now seen corresponding path program 1 times [2021-11-25 20:23:34,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337551041] [2021-11-25 20:23:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:34,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:23:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:34,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:23:34,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337551041] [2021-11-25 20:23:34,965 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:23:34,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302705593] [2021-11-25 20:23:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:34,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:34,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:23:34,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:23:34,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:23:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:23:37,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 8768 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:23:37,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:23:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-25 20:23:37,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:23:37,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302705593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:23:37,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:23:37,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:23:37,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887941068] [2021-11-25 20:23:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:23:37,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:23:37,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:23:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:23:37,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:23:37,967 INFO L87 Difference]: Start difference. First operand 14504 states and 21278 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:23:40,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:42,320 WARN L534 Checker$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 20:23:45,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:23:50,477 WARN L534 Checker$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 20:23:51,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:23:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:23:57,435 INFO L93 Difference]: Finished difference Result 42615 states and 62538 transitions. [2021-11-25 20:23:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:23:57,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 153 [2021-11-25 20:23:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:23:57,633 INFO L225 Difference]: With dead ends: 42615 [2021-11-25 20:23:57,633 INFO L226 Difference]: Without dead ends: 28130 [2021-11-25 20:23:57,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 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 20:23:57,904 INFO L933 BasicCegarLoop]: 6556 mSDtfsCounter, 4954 mSDsluCounter, 5230 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 40 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4959 SdHoareTripleChecker+Valid, 11182 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:23:57,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4959 Valid, 11182 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1528 Invalid, 4 Unknown, 0 Unchecked, 18.7s Time] [2021-11-25 20:23:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28130 states. [2021-11-25 20:23:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28130 to 28110. [2021-11-25 20:23:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28110 states, 17255 states have (on average 1.3239061141698059) internal successors, (22844), 17772 states have internal predecessors, (22844), 9046 states have call successors, (9046), 1813 states have call predecessors, (9046), 1808 states have return successors, (9251), 8892 states have call predecessors, (9251), 9045 states have call successors, (9251) [2021-11-25 20:23:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28110 states to 28110 states and 41141 transitions. [2021-11-25 20:23:59,480 INFO L78 Accepts]: Start accepts. Automaton has 28110 states and 41141 transitions. Word has length 153 [2021-11-25 20:23:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:23:59,481 INFO L470 AbstractCegarLoop]: Abstraction has 28110 states and 41141 transitions. [2021-11-25 20:23:59,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 20:23:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 28110 states and 41141 transitions. [2021-11-25 20:23:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-25 20:23:59,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:23:59,507 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 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] [2021-11-25 20:23:59,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:23:59,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:23:59,727 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:23:59,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:23:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 85302885, now seen corresponding path program 1 times [2021-11-25 20:23:59,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:23:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005319565] [2021-11-25 20:23:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:23:59,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-25 20:24:00,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005319565] [2021-11-25 20:24:00,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005319565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:00,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:00,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:00,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550542377] [2021-11-25 20:24:00,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:00,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:00,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:00,408 INFO L87 Difference]: Start difference. First operand 28110 states and 41141 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:24:02,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:04,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:07,760 WARN L534 Checker$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 20:24:11,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:12,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:16,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:23,004 INFO L93 Difference]: Finished difference Result 82291 states and 120413 transitions. [2021-11-25 20:24:23,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 152 [2021-11-25 20:24:23,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:23,370 INFO L225 Difference]: With dead ends: 82291 [2021-11-25 20:24:23,371 INFO L226 Difference]: Without dead ends: 54200 [2021-11-25 20:24:23,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:23,489 INFO L933 BasicCegarLoop]: 6421 mSDtfsCounter, 4907 mSDsluCounter, 5321 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4911 SdHoareTripleChecker+Valid, 11134 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:23,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4911 Valid, 11134 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1353 Invalid, 4 Unknown, 0 Unchecked, 20.8s Time] [2021-11-25 20:24:23,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54200 states. [2021-11-25 20:24:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54200 to 54190. [2021-11-25 20:24:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54190 states, 33347 states have (on average 1.3254565628092483) internal successors, (44200), 34344 states have internal predecessors, (44200), 17350 states have call successors, (17350), 3497 states have call predecessors, (17350), 3492 states have return successors, (17733), 17068 states have call predecessors, (17733), 17349 states have call successors, (17733) [2021-11-25 20:24:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54190 states to 54190 states and 79283 transitions. [2021-11-25 20:24:26,917 INFO L78 Accepts]: Start accepts. Automaton has 54190 states and 79283 transitions. Word has length 152 [2021-11-25 20:24:26,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:26,917 INFO L470 AbstractCegarLoop]: Abstraction has 54190 states and 79283 transitions. [2021-11-25 20:24:26,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-25 20:24:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 54190 states and 79283 transitions. [2021-11-25 20:24:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-25 20:24:26,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:26,934 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 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] [2021-11-25 20:24:26,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:24:26,935 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:26,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:26,935 INFO L85 PathProgramCache]: Analyzing trace with hash -681825528, now seen corresponding path program 1 times [2021-11-25 20:24:26,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:26,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206319025] [2021-11-25 20:24:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:26,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:27,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:24:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206319025] [2021-11-25 20:24:27,594 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:24:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714233499] [2021-11-25 20:24:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:27,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:24:27,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:24:27,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:24:27,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:24:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:24:29,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 8870 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:24:30,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:24:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-25 20:24:30,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:24:30,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714233499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:24:30,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:24:30,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:24:30,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485665862] [2021-11-25 20:24:30,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:24:30,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:24:30,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:24:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:24:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:24:30,330 INFO L87 Difference]: Start difference. First operand 54190 states and 79283 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:24:32,447 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:34,961 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:37,325 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:24:44,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:45,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:24:47,704 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 20:24:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:24:52,943 INFO L93 Difference]: Finished difference Result 158195 states and 231397 transitions. [2021-11-25 20:24:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:24:52,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 164 [2021-11-25 20:24:52,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:24:53,945 INFO L225 Difference]: With dead ends: 158195 [2021-11-25 20:24:53,945 INFO L226 Difference]: Without dead ends: 104024 [2021-11-25 20:24:54,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 20:24:54,207 INFO L933 BasicCegarLoop]: 7198 mSDtfsCounter, 5126 mSDsluCounter, 5316 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 11 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5131 SdHoareTripleChecker+Valid, 11905 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:24:54,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5131 Valid, 11905 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1516 Invalid, 4 Unknown, 0 Unchecked, 20.1s Time] [2021-11-25 20:24:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104024 states. [2021-11-25 20:24:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104024 to 104012. [2021-11-25 20:24:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104012 states, 64097 states have (on average 1.3253038363729972) internal successors, (84948), 65982 states have internal predecessors, (84948), 33186 states have call successors, (33186), 6737 states have call predecessors, (33186), 6728 states have return successors, (33853), 32640 states have call predecessors, (33853), 33185 states have call successors, (33853) [2021-11-25 20:24:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104012 states to 104012 states and 151987 transitions. [2021-11-25 20:24:59,254 INFO L78 Accepts]: Start accepts. Automaton has 104012 states and 151987 transitions. Word has length 164 [2021-11-25 20:24:59,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:24:59,254 INFO L470 AbstractCegarLoop]: Abstraction has 104012 states and 151987 transitions. [2021-11-25 20:24:59,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:24:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 104012 states and 151987 transitions. [2021-11-25 20:24:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-25 20:24:59,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:24:59,321 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 3, 3, 3, 3, 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] [2021-11-25 20:24:59,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:24:59,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:24:59,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:24:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:24:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash 927326494, now seen corresponding path program 1 times [2021-11-25 20:24:59,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:24:59,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504459008] [2021-11-25 20:24:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:24:59,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:24:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2021-11-25 20:25:00,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:00,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504459008] [2021-11-25 20:25:00,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504459008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 20:25:00,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557877885] [2021-11-25 20:25:00,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:00,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:25:00,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:25:00,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:25:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 9541 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:25:03,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:25:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-25 20:25:03,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:25:03,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557877885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:03,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 20:25:03,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-25 20:25:03,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512905748] [2021-11-25 20:25:03,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:03,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:25:03,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:03,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:25:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:25:03,723 INFO L87 Difference]: Start difference. First operand 104012 states and 151987 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 20:25:05,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:08,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:10,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:16,913 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 20:25:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:25:24,285 INFO L93 Difference]: Finished difference Result 259803 states and 379627 transitions. [2021-11-25 20:25:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:25:24,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 219 [2021-11-25 20:25:24,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:25:25,628 INFO L225 Difference]: With dead ends: 259803 [2021-11-25 20:25:25,628 INFO L226 Difference]: Without dead ends: 155810 [2021-11-25 20:25:25,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:25:25,998 INFO L933 BasicCegarLoop]: 6385 mSDtfsCounter, 5164 mSDsluCounter, 5085 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 10892 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:25:25,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5168 Valid, 10892 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1323 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2021-11-25 20:25:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155810 states. [2021-11-25 20:25:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155810 to 155796. [2021-11-25 20:25:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155796 states, 96209 states have (on average 1.3259050608570924) internal successors, (127564), 99038 states have internal predecessors, (127564), 49498 states have call successors, (49498), 10097 states have call predecessors, (49498), 10088 states have return successors, (50481), 48696 states have call predecessors, (50481), 49497 states have call successors, (50481) [2021-11-25 20:25:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155796 states to 155796 states and 227543 transitions. [2021-11-25 20:25:33,717 INFO L78 Accepts]: Start accepts. Automaton has 155796 states and 227543 transitions. Word has length 219 [2021-11-25 20:25:33,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:25:33,719 INFO L470 AbstractCegarLoop]: Abstraction has 155796 states and 227543 transitions. [2021-11-25 20:25:33,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 20:25:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 155796 states and 227543 transitions. [2021-11-25 20:25:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-25 20:25:33,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:25:33,814 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 20:25:33,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:25:34,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 20:25:34,036 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:25:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:25:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1034017848, now seen corresponding path program 1 times [2021-11-25 20:25:34,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:25:34,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931640933] [2021-11-25 20:25:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:34,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:25:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:34,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:25:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931640933] [2021-11-25 20:25:34,521 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-25 20:25:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587069678] [2021-11-25 20:25:34,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:25:34,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:25:34,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:25:34,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:25:34,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a31451b6-2b59-4129-8750-51a2393607b3/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:25:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:25:37,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 9177 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 20:25:37,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:25:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-25 20:25:37,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:25:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587069678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:25:37,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:25:37,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:25:37,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268578798] [2021-11-25 20:25:37,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:25:37,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:25:37,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:25:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:25:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:25:37,830 INFO L87 Difference]: Start difference. First operand 155796 states and 227543 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 20:25:39,953 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 20:25:42,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:45,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 20:25:53,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:25:55,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []