./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS --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 9f23cfa62b71a2e5a51fffc3a30328961f014d6aa87a85f8537d47b2cd2ac62e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:10:49,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:10:49,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:10:49,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:10:49,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:10:49,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:10:49,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:10:49,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:10:49,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:10:49,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:10:49,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:10:49,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:10:49,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:10:50,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:10:50,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:10:50,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:10:50,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:10:50,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:10:50,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:10:50,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:10:50,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:10:50,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:10:50,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:10:50,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:10:50,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:10:50,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:10:50,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:10:50,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:10:50,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:10:50,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:10:50,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:10:50,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:10:50,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:10:50,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:10:50,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:10:50,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:10:50,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:10:50,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:10:50,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:10:50,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:10:50,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:10:50,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:10:50,077 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:10:50,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:10:50,078 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:10:50,078 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:10:50,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:10:50,079 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:10:50,079 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:10:50,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:10:50,080 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:10:50,080 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:10:50,081 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:10:50,081 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:10:50,081 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:10:50,082 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:10:50,082 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:10:50,082 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:10:50,082 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:10:50,083 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:10:50,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:10:50,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:10:50,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:10:50,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:10:50,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:10:50,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:10:50,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:10:50,086 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:10:50,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:10:50,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:10:50,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:10:50,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:10:50,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:10:50,088 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:10:50,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:10:50,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:10:50,089 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:10:50,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:10:50,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:10:50,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:10:50,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f23cfa62b71a2e5a51fffc3a30328961f014d6aa87a85f8537d47b2cd2ac62e [2022-11-19 07:10:50,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:10:50,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:10:50,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:10:50,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:10:50,400 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:10:50,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i [2022-11-19 07:10:50,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/data/430260d06/3a7a5a4ada0849e4a6fbd4b7dc4b2aca/FLAGbe24a7762 [2022-11-19 07:10:51,895 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:10:51,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i [2022-11-19 07:10:52,017 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/data/430260d06/3a7a5a4ada0849e4a6fbd4b7dc4b2aca/FLAGbe24a7762 [2022-11-19 07:10:52,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/data/430260d06/3a7a5a4ada0849e4a6fbd4b7dc4b2aca [2022-11-19 07:10:52,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:10:52,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:10:52,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:10:52,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:10:52,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:10:52,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:52" (1/1) ... [2022-11-19 07:10:52,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cad39eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:10:52, skipping insertion in model container [2022-11-19 07:10:52,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:10:52" (1/1) ... [2022-11-19 07:10:52,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:10:52,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:11:01,583 WARN L234 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_aad1e874-8dc4-4135-8102-0786548e0c85/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i[766015,766028] [2022-11-19 07:11:02,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:02,343 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:11:03,173 WARN L234 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_aad1e874-8dc4-4135-8102-0786548e0c85/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i[766015,766028] [2022-11-19 07:11:03,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:11:03,606 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:11:03,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03 WrapperNode [2022-11-19 07:11:03,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:11:03,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:11:03,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:11:03,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:11:03,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:03,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:04,413 INFO L138 Inliner]: procedures = 977, calls = 8210, calls flagged for inlining = 435, calls inlined = 368, statements flattened = 17322 [2022-11-19 07:11:04,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:11:04,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:11:04,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:11:04,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:11:04,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:04,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:04,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:04,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:05,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:05,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:05,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:05,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:05,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:11:05,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:11:05,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:11:05,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:11:05,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (1/1) ... [2022-11-19 07:11:05,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:11:05,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:05,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:11:05,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aad1e874-8dc4-4135-8102-0786548e0c85/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:11:05,851 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 07:11:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 07:11:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-19 07:11:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-19 07:11:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lockdep_current_cpu_online [2022-11-19 07:11:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lockdep_current_cpu_online [2022-11-19 07:11:05,852 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_txskb [2022-11-19 07:11:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_txskb [2022-11-19 07:11:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure s6_to_int [2022-11-19 07:11:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure s6_to_int [2022-11-19 07:11:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_urb_has_error [2022-11-19 07:11:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_urb_has_error [2022-11-19 07:11:05,853 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pad [2022-11-19 07:11:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pad [2022-11-19 07:11:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~VOID [2022-11-19 07:11:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~VOID [2022-11-19 07:11:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mac_set_ampdu_factor [2022-11-19 07:11:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mac_set_ampdu_factor [2022-11-19 07:11:05,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_vendor_req_mutex_of_mt7601u_dev [2022-11-19 07:11:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_vendor_req_mutex_of_mt7601u_dev [2022-11-19 07:11:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:11:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:11:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_clear [2022-11-19 07:11:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_clear [2022-11-19 07:11:05,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mt7601u_mcu [2022-11-19 07:11:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mt7601u_mcu [2022-11-19 07:11:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_hw_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_hw_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_rmw [2022-11-19 07:11:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_rmw [2022-11-19 07:11:05,856 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2022-11-19 07:11:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2022-11-19 07:11:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_rf_rmw [2022-11-19 07:11:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_rf_rmw [2022-11-19 07:11:05,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_reg_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_reg_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~VOID [2022-11-19 07:11:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~VOID [2022-11-19 07:11:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-19 07:11:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-19 07:11:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:11:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:11:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_set_bw_filter [2022-11-19 07:11:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_set_bw_filter [2022-11-19 07:11:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_rmc [2022-11-19 07:11:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_rmc [2022-11-19 07:11:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 07:11:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 07:11:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_rmw [2022-11-19 07:11:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_rmw [2022-11-19 07:11:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock_sched_notrace___1 [2022-11-19 07:11:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock_sched_notrace___1 [2022-11-19 07:11:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_queue_delayed_work [2022-11-19 07:11:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_queue_delayed_work [2022-11-19 07:11:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock_sched_notrace___2 [2022-11-19 07:11:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock_sched_notrace___2 [2022-11-19 07:11:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_sta_add [2022-11-19 07:11:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_sta_add [2022-11-19 07:11:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-19 07:11:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-19 07:11:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_vendor_single_wr [2022-11-19 07:11:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_vendor_single_wr [2022-11-19 07:11:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure trace_event_raw_init [2022-11-19 07:11:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_event_raw_init [2022-11-19 07:11:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_set_rts_threshold [2022-11-19 07:11:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_set_rts_threshold [2022-11-19 07:11:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:11:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-11-19 07:11:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-11-19 07:11:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_vendor_req_mutex_of_mt7601u_dev [2022-11-19 07:11:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_vendor_req_mutex_of_mt7601u_dev [2022-11-19 07:11:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure ether_addr_copy [2022-11-19 07:11:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ether_addr_copy [2022-11-19 07:11:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_config [2022-11-19 07:11:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_config [2022-11-19 07:11:05,867 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_rr [2022-11-19 07:11:05,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_rr [2022-11-19 07:11:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_rr [2022-11-19 07:11:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_rr [2022-11-19 07:11:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure s6_validate [2022-11-19 07:11:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure s6_validate [2022-11-19 07:11:05,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:11:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:11:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_usb_free_buf [2022-11-19 07:11:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_usb_free_buf [2022-11-19 07:11:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:11:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:11:05,870 INFO L130 BoogieDeclarations]: Found specification of procedure field_valid [2022-11-19 07:11:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure field_valid [2022-11-19 07:11:05,871 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:11:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:11:05,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:11:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:11:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure q2hwq [2022-11-19 07:11:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure q2hwq [2022-11-19 07:11:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-19 07:11:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-19 07:11:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work___0 [2022-11-19 07:11:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work___0 [2022-11-19 07:11:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 07:11:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 07:11:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-19 07:11:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-19 07:11:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:11:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:11:05,877 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_u32 [2022-11-19 07:11:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_u32 [2022-11-19 07:11:05,878 INFO L130 BoogieDeclarations]: Found specification of procedure int_to_s6 [2022-11-19 07:11:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure int_to_s6 [2022-11-19 07:11:05,879 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_agc_default [2022-11-19 07:11:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_agc_default [2022-11-19 07:11:05,882 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_dma_cleanup [2022-11-19 07:11:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_dma_cleanup [2022-11-19 07:11:05,883 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-11-19 07:11:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-11-19 07:11:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_wr [2022-11-19 07:11:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_wr [2022-11-19 07:11:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_mt7601u_dev [2022-11-19 07:11:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_mt7601u_dev [2022-11-19 07:11:05,889 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:11:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:11:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_wr [2022-11-19 07:11:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_wr [2022-11-19 07:11:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-19 07:11:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-19 07:11:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:11:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:11:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:11:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:11:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:11:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure trace_event_reg [2022-11-19 07:11:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_event_reg [2022-11-19 07:11:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-19 07:11:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-19 07:11:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_hw_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_hw_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-11-19 07:11:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-11-19 07:11:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-11-19 07:11:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-11-19 07:11:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:11:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_usb_alloc_buf [2022-11-19 07:11:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_usb_alloc_buf [2022-11-19 07:11:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2022-11-19 07:11:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2022-11-19 07:11:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:11:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:11:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-19 07:11:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-19 07:11:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:11:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:11:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-19 07:11:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-19 07:11:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:11:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:11:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_init_hardware [2022-11-19 07:11:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_init_hardware [2022-11-19 07:11:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:11:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:11:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_submit_rx_buf [2022-11-19 07:11:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_submit_rx_buf [2022-11-19 07:11:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-11-19 07:11:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-11-19 07:11:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u32~0~X~~u32~0~TO~VOID [2022-11-19 07:11:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u32~0~X~~u32~0~TO~VOID [2022-11-19 07:11:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:11:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:11:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:11:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-19 07:11:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2022-11-19 07:11:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:11:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure simple_attr_write [2022-11-19 07:11:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_attr_write [2022-11-19 07:11:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_remove_interface [2022-11-19 07:11:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_remove_interface [2022-11-19 07:11:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_2 [2022-11-19 07:11:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_2 [2022-11-19 07:11:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_2 [2022-11-19 07:11:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_2 [2022-11-19 07:11:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure trace_read_temp [2022-11-19 07:11:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_read_temp [2022-11-19 07:11:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mcu_cmd_deinit [2022-11-19 07:11:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mcu_cmd_deinit [2022-11-19 07:11:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-19 07:11:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-19 07:11:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-19 07:11:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-19 07:11:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure _ieee80211_hw_set [2022-11-19 07:11:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure _ieee80211_hw_set [2022-11-19 07:11:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:11:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:11:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mcu_msg_alloc [2022-11-19 07:11:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mcu_msg_alloc [2022-11-19 07:11:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 07:11:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 07:11:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:11:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:11:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_vco_cal [2022-11-19 07:11:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_vco_cal [2022-11-19 07:11:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mt7601u_mcu [2022-11-19 07:11:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mt7601u_mcu [2022-11-19 07:11:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 07:11:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 07:11:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held___3 [2022-11-19 07:11:05,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held___3 [2022-11-19 07:11:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held___2 [2022-11-19 07:11:05,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held___2 [2022-11-19 07:11:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held___1 [2022-11-19 07:11:05,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held___1 [2022-11-19 07:11:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held___0 [2022-11-19 07:11:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held___0 [2022-11-19 07:11:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~TO~VOID [2022-11-19 07:11:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~TO~VOID [2022-11-19 07:11:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held___4 [2022-11-19 07:11:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held___4 [2022-11-19 07:11:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-19 07:11:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-19 07:11:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2022-11-19 07:11:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2022-11-19 07:11:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_rr [2022-11-19 07:11:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_rr [2022-11-19 07:11:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:11:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:11:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-19 07:11:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-19 07:11:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mac_set_ctrlch [2022-11-19 07:11:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mac_set_ctrlch [2022-11-19 07:11:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-19 07:11:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-19 07:11:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:11:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_vendor_request [2022-11-19 07:11:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_vendor_request [2022-11-19 07:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_set [2022-11-19 07:11:05,911 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_set [2022-11-19 07:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_mt7601u_dev [2022-11-19 07:11:05,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_mt7601u_dev [2022-11-19 07:11:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:11:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:11:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_tx [2022-11-19 07:11:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_tx [2022-11-19 07:11:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_configure_filter [2022-11-19 07:11:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_configure_filter [2022-11-19 07:11:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_wr [2022-11-19 07:11:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_wr [2022-11-19 07:11:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure static_key_false [2022-11-19 07:11:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure static_key_false [2022-11-19 07:11:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2022-11-19 07:11:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2022-11-19 07:11:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mac_config_tsf [2022-11-19 07:11:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mac_config_tsf [2022-11-19 07:11:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2022-11-19 07:11:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2022-11-19 07:11:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_temp_comp [2022-11-19 07:11:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_temp_comp [2022-11-19 07:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_rxdc_cal [2022-11-19 07:11:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_rxdc_cal [2022-11-19 07:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure field_validate [2022-11-19 07:11:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure field_validate [2022-11-19 07:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_2 [2022-11-19 07:11:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_2 [2022-11-19 07:11:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_reg_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_reg_atomic_mutex_of_mt7601u_dev [2022-11-19 07:11:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_resume [2022-11-19 07:11:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_resume [2022-11-19 07:11:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 07:11:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 07:11:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2022-11-19 07:11:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2022-11-19 07:11:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 07:11:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 07:11:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:11:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:11:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-11-19 07:11:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-11-19 07:11:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 07:11:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 07:11:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 07:11:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 07:11:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:11:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:11:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_ampdu_action [2022-11-19 07:11:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_ampdu_action [2022-11-19 07:11:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-19 07:11:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-19 07:11:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_addr_wr [2022-11-19 07:11:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_addr_wr [2022-11-19 07:11:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_temp [2022-11-19 07:11:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_temp [2022-11-19 07:11:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mcu_function_select [2022-11-19 07:11:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mcu_function_select [2022-11-19 07:11:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-19 07:11:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-19 07:11:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_sta_rate_tbl_update [2022-11-19 07:11:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_sta_rate_tbl_update [2022-11-19 07:11:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_disconnect [2022-11-19 07:11:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_disconnect [2022-11-19 07:11:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure fls [2022-11-19 07:11:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure fls [2022-11-19 07:11:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_chip_onoff [2022-11-19 07:11:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_chip_onoff [2022-11-19 07:11:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_set_key [2022-11-19 07:11:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_set_key [2022-11-19 07:11:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:11:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:11:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock___0 [2022-11-19 07:11:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock___0 [2022-11-19 07:11:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace___2 [2022-11-19 07:11:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace___2 [2022-11-19 07:11:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace___1 [2022-11-19 07:11:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace___1 [2022-11-19 07:11:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-11-19 07:11:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-11-19 07:11:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_set_bw [2022-11-19 07:11:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_set_bw [2022-11-19 07:11:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_mac_wcid_set_key [2022-11-19 07:11:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_mac_wcid_set_key [2022-11-19 07:11:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:11:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_set_ctrlch [2022-11-19 07:11:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_set_ctrlch [2022-11-19 07:11:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:11:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_rf_wr [2022-11-19 07:11:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_rf_wr [2022-11-19 07:11:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure trace_raw_output_prep [2022-11-19 07:11:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_raw_output_prep [2022-11-19 07:11:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:11:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:11:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:11:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_efuse_read [2022-11-19 07:11:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_efuse_read [2022-11-19 07:11:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_cleanup [2022-11-19 07:11:05,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_cleanup [2022-11-19 07:11:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_rf_rr [2022-11-19 07:11:05,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_rf_rr [2022-11-19 07:11:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure skb_get_queue_mapping [2022-11-19 07:11:05,930 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_get_queue_mapping [2022-11-19 07:11:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:11:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:11:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_mac_tx_rate_val [2022-11-19 07:11:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_mac_tx_rate_val [2022-11-19 07:11:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_pages [2022-11-19 07:11:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_pages [2022-11-19 07:11:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 07:11:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 07:11:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-19 07:11:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-19 07:11:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_sw_scan_complete [2022-11-19 07:11:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_sw_scan_complete [2022-11-19 07:11:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure trace_define_field [2022-11-19 07:11:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_define_field [2022-11-19 07:11:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put_le32 [2022-11-19 07:11:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put_le32 [2022-11-19 07:11:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-11-19 07:11:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-11-19 07:11:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_wr_copy [2022-11-19 07:11:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_wr_copy [2022-11-19 07:11:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_add_interface [2022-11-19 07:11:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_add_interface [2022-11-19 07:11:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-19 07:11:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-19 07:11:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_usb_submit_buf [2022-11-19 07:11:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_usb_submit_buf [2022-11-19 07:11:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2022-11-19 07:11:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2022-11-19 07:11:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_dma_fw [2022-11-19 07:11:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_dma_fw [2022-11-19 07:11:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:11:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:11:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:11:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:11:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 07:11:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 07:11:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-19 07:11:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-19 07:11:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 07:11:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 07:11:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure lin2dBd [2022-11-19 07:11:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure lin2dBd [2022-11-19 07:11:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:11:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:11:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:11:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-19 07:11:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-19 07:11:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2022-11-19 07:11:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2022-11-19 07:11:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_to_usb_dev [2022-11-19 07:11:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_to_usb_dev [2022-11-19 07:11:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bbp_r47_get [2022-11-19 07:11:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bbp_r47_get [2022-11-19 07:11:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_tx_stat [2022-11-19 07:11:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_tx_stat [2022-11-19 07:11:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_sta_notify [2022-11-19 07:11:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_sta_notify [2022-11-19 07:11:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 07:11:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 07:11:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-19 07:11:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-19 07:11:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_conf_tx [2022-11-19 07:11:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_conf_tx [2022-11-19 07:11:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 07:11:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 07:11:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:11:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:11:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure trace_handle_return [2022-11-19 07:11:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_handle_return [2022-11-19 07:11:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_hdrlen_from_skb [2022-11-19 07:11:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_hdrlen_from_skb [2022-11-19 07:11:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mac_wcid_setup [2022-11-19 07:11:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mac_wcid_setup [2022-11-19 07:11:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-19 07:11:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-19 07:11:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:11:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:11:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_burst_write_regs [2022-11-19 07:11:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_burst_write_regs [2022-11-19 07:11:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock_sched_notrace [2022-11-19 07:11:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock_sched_notrace [2022-11-19 07:11:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock___0 [2022-11-19 07:11:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock___0 [2022-11-19 07:11:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-11-19 07:11:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-11-19 07:11:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-19 07:11:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-19 07:11:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 07:11:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 07:11:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:11:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count___1 [2022-11-19 07:11:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count___1 [2022-11-19 07:11:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_write_reg_pairs [2022-11-19 07:11:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_write_reg_pairs [2022-11-19 07:11:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-19 07:11:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-19 07:11:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_mac_get_key_info [2022-11-19 07:11:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_mac_get_key_info [2022-11-19 07:11:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-19 07:11:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-19 07:11:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-19 07:11:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-19 07:11:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_sta_remove [2022-11-19 07:11:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_sta_remove [2022-11-19 07:11:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 07:11:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 07:11:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_bss_info_changed [2022-11-19 07:11:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_bss_info_changed [2022-11-19 07:11:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cow [2022-11-19 07:11:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cow [2022-11-19 07:11:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:11:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:11:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-19 07:11:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-19 07:11:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_wait_asic_ready [2022-11-19 07:11:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_wait_asic_ready [2022-11-19 07:11:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-19 07:11:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-19 07:11:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_sw_scan [2022-11-19 07:11:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_sw_scan [2022-11-19 07:11:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:11:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:11:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-19 07:11:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-19 07:11:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mcu_calibrate [2022-11-19 07:11:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mcu_calibrate [2022-11-19 07:11:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_mcu_msg_send [2022-11-19 07:11:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_mcu_msg_send [2022-11-19 07:11:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure firmware_running [2022-11-19 07:11:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure firmware_running [2022-11-19 07:11:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_rmw [2022-11-19 07:11:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_rmw [2022-11-19 07:11:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_poll [2022-11-19 07:11:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_poll [2022-11-19 07:11:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 07:11:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 07:11:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_set_power_rate [2022-11-19 07:11:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_set_power_rate [2022-11-19 07:11:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-19 07:11:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-19 07:11:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure mt7601u_has_tssi [2022-11-19 07:11:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mt7601u_has_tssi [2022-11-19 07:11:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:11:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure mt76_poll_msec [2022-11-19 07:11:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure mt76_poll_msec [2022-11-19 07:11:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-19 07:11:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-19 07:11:07,972 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:11:07,977 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:11:08,152 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:11:42,301 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:11:52,775 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:11:52,775 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:11:52,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:11:52 BoogieIcfgContainer [2022-11-19 07:11:52,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:11:52,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:11:52,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:11:52,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:11:52,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:10:52" (1/3) ... [2022-11-19 07:11:52,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc9967a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:11:52, skipping insertion in model container [2022-11-19 07:11:52,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:11:03" (2/3) ... [2022-11-19 07:11:52,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc9967a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:11:52, skipping insertion in model container [2022-11-19 07:11:52,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:11:52" (3/3) ... [2022-11-19 07:11:52,793 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--mediatek--mt7601u--mt7601u.ko-entry_point.cil.out.i [2022-11-19 07:11:52,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:11:52,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:11:52,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:11:52,935 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e504f90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:11:52,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:11:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 4432 states, 2659 states have (on average 1.3471229785633696) internal successors, (3582), 2823 states have internal predecessors, (3582), 1540 states have call successors, (1540), 232 states have call predecessors, (1540), 231 states have return successors, (1501), 1497 states have call predecessors, (1501), 1501 states have call successors, (1501) [2022-11-19 07:11:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:11:52,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:52,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:52,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:52,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash 437956949, now seen corresponding path program 1 times [2022-11-19 07:11:52,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:52,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102543043] [2022-11-19 07:11:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:52,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:11:54,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:54,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102543043] [2022-11-19 07:11:54,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102543043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:54,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:11:54,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:11:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100741896] [2022-11-19 07:11:54,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:54,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:11:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:54,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:11:54,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:11:54,877 INFO L87 Difference]: Start difference. First operand has 4432 states, 2659 states have (on average 1.3471229785633696) internal successors, (3582), 2823 states have internal predecessors, (3582), 1540 states have call successors, (1540), 232 states have call predecessors, (1540), 231 states have return successors, (1501), 1497 states have call predecessors, (1501), 1501 states have call successors, (1501) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:11:56,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:59,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:02,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:04,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:08,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:15,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:17,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:18,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:18,073 INFO L93 Difference]: Finished difference Result 13184 states and 20475 transitions. [2022-11-19 07:12:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-11-19 07:12:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:18,169 INFO L225 Difference]: With dead ends: 13184 [2022-11-19 07:12:18,170 INFO L226 Difference]: Without dead ends: 8659 [2022-11-19 07:12:18,254 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:12:18,262 INFO L413 NwaCegarLoop]: 7763 mSDtfsCounter, 6415 mSDsluCounter, 6042 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6421 SdHoareTripleChecker+Valid, 13805 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:18,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6421 Valid, 13805 Invalid, 1149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1143 Invalid, 3 Unknown, 0 Unchecked, 22.2s Time] [2022-11-19 07:12:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8659 states. [2022-11-19 07:12:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8659 to 8647. [2022-11-19 07:12:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8647 states, 5237 states have (on average 1.3293870536566736) internal successors, (6962), 5464 states have internal predecessors, (6962), 2949 states have call successors, (2949), 461 states have call predecessors, (2949), 460 states have return successors, (2937), 2923 states have call predecessors, (2937), 2931 states have call successors, (2937) [2022-11-19 07:12:19,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8647 states to 8647 states and 12848 transitions. [2022-11-19 07:12:19,185 INFO L78 Accepts]: Start accepts. Automaton has 8647 states and 12848 transitions. Word has length 54 [2022-11-19 07:12:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:19,188 INFO L495 AbstractCegarLoop]: Abstraction has 8647 states and 12848 transitions. [2022-11-19 07:12:19,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 07:12:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8647 states and 12848 transitions. [2022-11-19 07:12:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:12:19,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:19,205 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:12:19,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:19,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash 787837954, now seen corresponding path program 1 times [2022-11-19 07:12:19,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:19,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829289682] [2022-11-19 07:12:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:19,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:12:20,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:20,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829289682] [2022-11-19 07:12:20,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829289682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:20,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:20,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611154918] [2022-11-19 07:12:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:20,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:20,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:20,573 INFO L87 Difference]: Start difference. First operand 8647 states and 12848 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:12:21,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:24,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:26,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:28,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:29,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:32,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:38,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:38,636 INFO L93 Difference]: Finished difference Result 11244 states and 16522 transitions. [2022-11-19 07:12:38,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:38,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-11-19 07:12:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:38,703 INFO L225 Difference]: With dead ends: 11244 [2022-11-19 07:12:38,703 INFO L226 Difference]: Without dead ends: 11240 [2022-11-19 07:12:38,708 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:12:38,709 INFO L413 NwaCegarLoop]: 7177 mSDtfsCounter, 6250 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6256 SdHoareTripleChecker+Valid, 9111 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:38,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6256 Valid, 9111 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 872 Invalid, 2 Unknown, 0 Unchecked, 17.6s Time] [2022-11-19 07:12:38,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2022-11-19 07:12:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 11231. [2022-11-19 07:12:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11231 states, 6740 states have (on average 1.3204747774480712) internal successors, (8900), 7079 states have internal predecessors, (8900), 3806 states have call successors, (3806), 683 states have call predecessors, (3806), 684 states have return successors, (3802), 3778 states have call predecessors, (3802), 3790 states have call successors, (3802) [2022-11-19 07:12:39,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11231 states to 11231 states and 16508 transitions. [2022-11-19 07:12:39,347 INFO L78 Accepts]: Start accepts. Automaton has 11231 states and 16508 transitions. Word has length 68 [2022-11-19 07:12:39,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:39,348 INFO L495 AbstractCegarLoop]: Abstraction has 11231 states and 16508 transitions. [2022-11-19 07:12:39,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:12:39,348 INFO L276 IsEmpty]: Start isEmpty. Operand 11231 states and 16508 transitions. [2022-11-19 07:12:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-19 07:12:39,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:39,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:12:39,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:39,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1349313782, now seen corresponding path program 1 times [2022-11-19 07:12:39,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:39,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242507428] [2022-11-19 07:12:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:39,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:12:40,276 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:40,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242507428] [2022-11-19 07:12:40,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242507428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:40,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:40,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:40,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091035310] [2022-11-19 07:12:40,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:40,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:40,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:40,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:40,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:40,279 INFO L87 Difference]: Start difference. First operand 11231 states and 16508 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:12:43,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:45,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:47,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:51,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:55,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:56,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:56,789 INFO L93 Difference]: Finished difference Result 15819 states and 23024 transitions. [2022-11-19 07:12:56,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:56,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 69 [2022-11-19 07:12:56,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:56,882 INFO L225 Difference]: With dead ends: 15819 [2022-11-19 07:12:56,882 INFO L226 Difference]: Without dead ends: 15816 [2022-11-19 07:12:56,896 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:12:56,897 INFO L413 NwaCegarLoop]: 6886 mSDtfsCounter, 6315 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6323 SdHoareTripleChecker+Valid, 9337 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:56,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6323 Valid, 9337 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 4 Unknown, 0 Unchecked, 15.9s Time] [2022-11-19 07:12:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15816 states. [2022-11-19 07:12:57,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15816 to 15798. [2022-11-19 07:12:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15798 states, 9352 states have (on average 1.310414884516681) internal successors, (12255), 9868 states have internal predecessors, (12255), 5375 states have call successors, (5375), 1069 states have call predecessors, (5375), 1070 states have return successors, (5372), 5338 states have call predecessors, (5372), 5360 states have call successors, (5372) [2022-11-19 07:12:57,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15798 states to 15798 states and 23002 transitions. [2022-11-19 07:12:57,873 INFO L78 Accepts]: Start accepts. Automaton has 15798 states and 23002 transitions. Word has length 69 [2022-11-19 07:12:57,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:57,874 INFO L495 AbstractCegarLoop]: Abstraction has 15798 states and 23002 transitions. [2022-11-19 07:12:57,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:12:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 15798 states and 23002 transitions. [2022-11-19 07:12:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 07:12:57,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:57,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:57,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:12:57,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:57,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1118464005, now seen corresponding path program 1 times [2022-11-19 07:12:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:57,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567240480] [2022-11-19 07:12:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:57,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:12:58,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567240480] [2022-11-19 07:12:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567240480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:58,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:58,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:58,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305409772] [2022-11-19 07:12:58,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:58,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:58,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:58,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:58,826 INFO L87 Difference]: Start difference. First operand 15798 states and 23002 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:13:01,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:03,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:05,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:09,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:13,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:14,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:14,624 INFO L93 Difference]: Finished difference Result 15818 states and 23022 transitions. [2022-11-19 07:13:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:13:14,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2022-11-19 07:13:14,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:14,704 INFO L225 Difference]: With dead ends: 15818 [2022-11-19 07:13:14,705 INFO L226 Difference]: Without dead ends: 15815 [2022-11-19 07:13:14,718 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:13:14,719 INFO L413 NwaCegarLoop]: 6884 mSDtfsCounter, 6312 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6320 SdHoareTripleChecker+Valid, 9335 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:14,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6320 Valid, 9335 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 4 Unknown, 0 Unchecked, 15.1s Time] [2022-11-19 07:13:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15815 states. [2022-11-19 07:13:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15815 to 15797. [2022-11-19 07:13:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15797 states, 9352 states have (on average 1.3103079555175363) internal successors, (12254), 9867 states have internal predecessors, (12254), 5374 states have call successors, (5374), 1069 states have call predecessors, (5374), 1070 states have return successors, (5372), 5338 states have call predecessors, (5372), 5360 states have call successors, (5372) [2022-11-19 07:13:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15797 states to 15797 states and 23000 transitions. [2022-11-19 07:13:15,722 INFO L78 Accepts]: Start accepts. Automaton has 15797 states and 23000 transitions. Word has length 70 [2022-11-19 07:13:15,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:15,724 INFO L495 AbstractCegarLoop]: Abstraction has 15797 states and 23000 transitions. [2022-11-19 07:13:15,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:13:15,724 INFO L276 IsEmpty]: Start isEmpty. Operand 15797 states and 23000 transitions. [2022-11-19 07:13:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:13:15,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:15,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:15,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:13:15,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:15,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:15,729 INFO L85 PathProgramCache]: Analyzing trace with hash 310168941, now seen corresponding path program 1 times [2022-11-19 07:13:15,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:15,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447441642] [2022-11-19 07:13:15,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:13:16,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:16,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447441642] [2022-11-19 07:13:16,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447441642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:16,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:13:16,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:13:16,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6230395] [2022-11-19 07:13:16,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:16,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:13:16,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:13:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:13:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:13:16,522 INFO L87 Difference]: Start difference. First operand 15797 states and 23000 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:13:17,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:20,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:22,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:24,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:28,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:32,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:34,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:34,519 INFO L93 Difference]: Finished difference Result 16066 states and 23356 transitions. [2022-11-19 07:13:34,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:13:34,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2022-11-19 07:13:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:34,608 INFO L225 Difference]: With dead ends: 16066 [2022-11-19 07:13:34,608 INFO L226 Difference]: Without dead ends: 16063 [2022-11-19 07:13:34,624 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:13:34,625 INFO L413 NwaCegarLoop]: 6622 mSDtfsCounter, 6397 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6405 SdHoareTripleChecker+Valid, 8105 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:34,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6405 Valid, 8105 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 4 Unknown, 0 Unchecked, 17.4s Time] [2022-11-19 07:13:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16063 states. [2022-11-19 07:13:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16063 to 16046. [2022-11-19 07:13:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16046 states, 9498 states have (on average 1.3099599915771742) internal successors, (12442), 10022 states have internal predecessors, (12442), 5446 states have call successors, (5446), 1100 states have call predecessors, (5446), 1101 states have return successors, (5445), 5411 states have call predecessors, (5445), 5433 states have call successors, (5445) [2022-11-19 07:13:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16046 states to 16046 states and 23333 transitions. [2022-11-19 07:13:35,784 INFO L78 Accepts]: Start accepts. Automaton has 16046 states and 23333 transitions. Word has length 71 [2022-11-19 07:13:35,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:35,784 INFO L495 AbstractCegarLoop]: Abstraction has 16046 states and 23333 transitions. [2022-11-19 07:13:35,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:13:35,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16046 states and 23333 transitions. [2022-11-19 07:13:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:13:35,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:35,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:35,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:13:35,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1022830600, now seen corresponding path program 1 times [2022-11-19 07:13:35,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:35,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025028115] [2022-11-19 07:13:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:35,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:13:36,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:36,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025028115] [2022-11-19 07:13:36,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025028115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:36,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:13:36,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:13:36,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195873759] [2022-11-19 07:13:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:36,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:13:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:13:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:13:36,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:13:36,818 INFO L87 Difference]: Start difference. First operand 16046 states and 23333 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:13:38,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:40,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:42,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:45,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:48,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:53,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:55,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:13:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:13:55,772 INFO L93 Difference]: Finished difference Result 18831 states and 27181 transitions. [2022-11-19 07:13:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:13:55,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-11-19 07:13:55,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:13:55,868 INFO L225 Difference]: With dead ends: 18831 [2022-11-19 07:13:55,868 INFO L226 Difference]: Without dead ends: 18827 [2022-11-19 07:13:55,884 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:13:55,885 INFO L413 NwaCegarLoop]: 6916 mSDtfsCounter, 5894 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5900 SdHoareTripleChecker+Valid, 9127 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:13:55,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5900 Valid, 9127 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 868 Invalid, 4 Unknown, 0 Unchecked, 18.2s Time] [2022-11-19 07:13:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18827 states. [2022-11-19 07:13:57,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18827 to 18810. [2022-11-19 07:13:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18810 states, 11113 states have (on average 1.3063979123548997) internal successors, (14518), 11743 states have internal predecessors, (14518), 6314 states have call successors, (6314), 1381 states have call predecessors, (6314), 1382 states have return successors, (6323), 6277 states have call predecessors, (6323), 6303 states have call successors, (6323) [2022-11-19 07:13:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18810 states to 18810 states and 27155 transitions. [2022-11-19 07:13:57,217 INFO L78 Accepts]: Start accepts. Automaton has 18810 states and 27155 transitions. Word has length 72 [2022-11-19 07:13:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:57,218 INFO L495 AbstractCegarLoop]: Abstraction has 18810 states and 27155 transitions. [2022-11-19 07:13:57,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:13:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18810 states and 27155 transitions. [2022-11-19 07:13:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:13:57,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:57,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:57,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:13:57,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:57,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1640510416, now seen corresponding path program 1 times [2022-11-19 07:13:57,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:57,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996479940] [2022-11-19 07:13:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:57,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:13:58,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:58,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996479940] [2022-11-19 07:13:58,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996479940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:13:58,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:13:58,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:13:58,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133393922] [2022-11-19 07:13:58,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:13:58,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:13:58,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:13:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:13:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:13:58,043 INFO L87 Difference]: Start difference. First operand 18810 states and 27155 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:14:01,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:03,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:07,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:15,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:16,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:17,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:17,131 INFO L93 Difference]: Finished difference Result 33682 states and 48853 transitions. [2022-11-19 07:14:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:17,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2022-11-19 07:14:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:17,330 INFO L225 Difference]: With dead ends: 33682 [2022-11-19 07:14:17,330 INFO L226 Difference]: Without dead ends: 33678 [2022-11-19 07:14:17,353 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:14:17,354 INFO L413 NwaCegarLoop]: 7512 mSDtfsCounter, 6130 mSDsluCounter, 5927 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6134 SdHoareTripleChecker+Valid, 13439 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:17,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6134 Valid, 13439 Invalid, 1132 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1124 Invalid, 4 Unknown, 0 Unchecked, 17.4s Time] [2022-11-19 07:14:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33678 states. [2022-11-19 07:14:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33678 to 33662. [2022-11-19 07:14:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33662 states, 19893 states have (on average 1.3067410646961242) internal successors, (25995), 20965 states have internal predecessors, (25995), 11280 states have call successors, (11280), 2494 states have call predecessors, (11280), 2488 states have return successors, (11550), 11224 states have call predecessors, (11550), 11269 states have call successors, (11550) [2022-11-19 07:14:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33662 states to 33662 states and 48825 transitions. [2022-11-19 07:14:19,563 INFO L78 Accepts]: Start accepts. Automaton has 33662 states and 48825 transitions. Word has length 73 [2022-11-19 07:14:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:19,564 INFO L495 AbstractCegarLoop]: Abstraction has 33662 states and 48825 transitions. [2022-11-19 07:14:19,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:14:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 33662 states and 48825 transitions. [2022-11-19 07:14:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:14:19,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:19,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:19,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:14:19,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:19,569 INFO L85 PathProgramCache]: Analyzing trace with hash -686246901, now seen corresponding path program 1 times [2022-11-19 07:14:19,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:19,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550353951] [2022-11-19 07:14:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:19,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:14:20,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:20,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550353951] [2022-11-19 07:14:20,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550353951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:20,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:20,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091522521] [2022-11-19 07:14:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:20,353 INFO L87 Difference]: Start difference. First operand 33662 states and 48825 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:14:23,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:25,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:28,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:31,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:39,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:42,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:44,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:14:44,000 INFO L93 Difference]: Finished difference Result 63898 states and 93490 transitions. [2022-11-19 07:14:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:14:44,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2022-11-19 07:14:44,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:14:44,332 INFO L225 Difference]: With dead ends: 63898 [2022-11-19 07:14:44,332 INFO L226 Difference]: Without dead ends: 63894 [2022-11-19 07:14:44,361 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:14:44,362 INFO L413 NwaCegarLoop]: 7580 mSDtfsCounter, 6245 mSDsluCounter, 5923 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6249 SdHoareTripleChecker+Valid, 13503 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:14:44,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6249 Valid, 13503 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1122 Invalid, 3 Unknown, 0 Unchecked, 20.6s Time] [2022-11-19 07:14:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63894 states. [2022-11-19 07:14:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63894 to 63885. [2022-11-19 07:14:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63885 states, 37825 states have (on average 1.3046133509583608) internal successors, (49347), 39808 states have internal predecessors, (49347), 21194 states have call successors, (21194), 4894 states have call predecessors, (21194), 4865 states have return successors, (22919), 21034 states have call predecessors, (22919), 21183 states have call successors, (22919) [2022-11-19 07:14:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63885 states to 63885 states and 93460 transitions. [2022-11-19 07:14:48,373 INFO L78 Accepts]: Start accepts. Automaton has 63885 states and 93460 transitions. Word has length 74 [2022-11-19 07:14:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:14:48,374 INFO L495 AbstractCegarLoop]: Abstraction has 63885 states and 93460 transitions. [2022-11-19 07:14:48,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:14:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 63885 states and 93460 transitions. [2022-11-19 07:14:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 07:14:48,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:14:48,378 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:14:48,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:14:48,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:14:48,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:14:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash 198725171, now seen corresponding path program 1 times [2022-11-19 07:14:48,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:14:48,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41827947] [2022-11-19 07:14:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:14:48,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:14:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:14:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:14:49,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:14:49,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41827947] [2022-11-19 07:14:49,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41827947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:49,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:14:49,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:14:49,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170736817] [2022-11-19 07:14:49,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:49,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:14:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:14:49,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:14:49,767 INFO L87 Difference]: Start difference. First operand 63885 states and 93460 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:14:53,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:14:55,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:00,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:06,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:08,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:08,762 INFO L93 Difference]: Finished difference Result 95117 states and 138386 transitions. [2022-11-19 07:15:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:08,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 75 [2022-11-19 07:15:08,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:09,232 INFO L225 Difference]: With dead ends: 95117 [2022-11-19 07:15:09,232 INFO L226 Difference]: Without dead ends: 95104 [2022-11-19 07:15:09,274 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:15:09,277 INFO L413 NwaCegarLoop]: 6997 mSDtfsCounter, 6393 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6393 SdHoareTripleChecker+Valid, 10762 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:09,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6393 Valid, 10762 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 935 Invalid, 4 Unknown, 0 Unchecked, 14.8s Time] [2022-11-19 07:15:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95104 states. [2022-11-19 07:15:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95104 to 95094. [2022-11-19 07:15:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95094 states, 57191 states have (on average 1.3093668584217797) internal successors, (74884), 60016 states have internal predecessors, (74884), 30332 states have call successors, (30332), 7951 states have call predecessors, (30332), 7570 states have return successors, (33093), 29529 states have call predecessors, (33093), 30321 states have call successors, (33093) [2022-11-19 07:15:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95094 states to 95094 states and 138309 transitions. [2022-11-19 07:15:15,610 INFO L78 Accepts]: Start accepts. Automaton has 95094 states and 138309 transitions. Word has length 75 [2022-11-19 07:15:15,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:15,610 INFO L495 AbstractCegarLoop]: Abstraction has 95094 states and 138309 transitions. [2022-11-19 07:15:15,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 07:15:15,610 INFO L276 IsEmpty]: Start isEmpty. Operand 95094 states and 138309 transitions. [2022-11-19 07:15:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 07:15:15,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:15,617 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:15:15,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:15:15,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1021954753, now seen corresponding path program 1 times [2022-11-19 07:15:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714157833] [2022-11-19 07:15:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:15:16,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:16,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714157833] [2022-11-19 07:15:16,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714157833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:16,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:16,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117108873] [2022-11-19 07:15:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:16,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:16,707 INFO L87 Difference]: Start difference. First operand 95094 states and 138309 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:15:18,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:21,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:23,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:15:28,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []