./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.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_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/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_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/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_03cd0429-9d82-47df-af8a-5f09cf0e3308/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 32a406239684e899577576103e146c0b88a65f19a1f620e7a11415e96a39c63a --- 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 08:12:46,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:12:46,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:12:46,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:12:46,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:12:46,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:12:46,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:12:46,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:12:46,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:12:46,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:12:46,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:12:46,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:12:46,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:12:46,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:12:46,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:12:46,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:12:46,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:12:46,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:12:46,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:12:46,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:12:46,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:12:46,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:12:46,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:12:46,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:12:46,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:12:46,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:12:46,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:12:46,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:12:46,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:12:46,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:12:46,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:12:46,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:12:46,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:12:46,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:12:46,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:12:46,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:12:46,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:12:46,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:12:46,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:12:46,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:12:46,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:12:46,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:12:46,224 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:12:46,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:12:46,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:12:46,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:12:46,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:12:46,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:12:46,226 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:12:46,226 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:12:46,226 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:12:46,227 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:12:46,228 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:12:46,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:12:46,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:12:46,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:12:46,228 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:12:46,229 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:12:46,229 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:12:46,229 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:12:46,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:12:46,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:12:46,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:12:46,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:12:46,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:12:46,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:12:46,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:12:46,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:12:46,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:12:46,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:12:46,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:12:46,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:46,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:12:46,233 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:12:46,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:12:46,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:12:46,234 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:12:46,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:12:46,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:12:46,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:12:46,235 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a406239684e899577576103e146c0b88a65f19a1f620e7a11415e96a39c63a [2022-11-19 08:12:46,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:12:46,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:12:46,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:12:46,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:12:46,560 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:12:46,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2022-11-19 08:12:46,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/data/140df7347/1681b9907d7c4579a9fda62c9a1d790a/FLAGdf1ba2dd0 [2022-11-19 08:12:47,810 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:12:47,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2022-11-19 08:12:47,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/data/140df7347/1681b9907d7c4579a9fda62c9a1d790a/FLAGdf1ba2dd0 [2022-11-19 08:12:48,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/data/140df7347/1681b9907d7c4579a9fda62c9a1d790a [2022-11-19 08:12:48,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:12:48,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:12:48,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:48,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:12:48,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:12:48,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:48" (1/1) ... [2022-11-19 08:12:48,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44400e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:48, skipping insertion in model container [2022-11-19 08:12:48,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:12:48" (1/1) ... [2022-11-19 08:12:48,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:12:48,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:12:53,001 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512219,512232] [2022-11-19 08:12:53,005 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512366,512379] [2022-11-19 08:12:53,006 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512505,512518] [2022-11-19 08:12:53,006 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512663,512676] [2022-11-19 08:12:53,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:53,116 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:12:53,685 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512219,512232] [2022-11-19 08:12:53,685 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512366,512379] [2022-11-19 08:12:53,686 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512505,512518] [2022-11-19 08:12:53,686 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_03cd0429-9d82-47df-af8a-5f09cf0e3308/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i[512663,512676] [2022-11-19 08:12:53,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:12:54,084 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:12:54,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54 WrapperNode [2022-11-19 08:12:54,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:12:54,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:54,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:12:54,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:12:54,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:54,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:54,662 INFO L138 Inliner]: procedures = 578, calls = 6341, calls flagged for inlining = 344, calls inlined = 320, statements flattened = 11555 [2022-11-19 08:12:54,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:12:54,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:12:54,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:12:54,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:12:54,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:54,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:54,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:54,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:54,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:55,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:55,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:55,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:55,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:12:55,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:12:55,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:12:55,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:12:55,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (1/1) ... [2022-11-19 08:12:55,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:12:55,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:12:55,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:12:55,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03cd0429-9d82-47df-af8a-5f09cf0e3308/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:12:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 08:12:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 08:12:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_disable [2022-11-19 08:12:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_disable [2022-11-19 08:12:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:12:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:12:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 08:12:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 08:12:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_intr [2022-11-19 08:12:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_intr [2022-11-19 08:12:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 08:12:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 08:12:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:12:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:12:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_minnow_platform_init [2022-11-19 08:12:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_minnow_platform_init [2022-11-19 08:12:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_open [2022-11-19 08:12:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_open [2022-11-19 08:12:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-19 08:12:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-19 08:12:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-19 08:12:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-19 08:12:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reinit_locked [2022-11-19 08:12:55,330 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reinit_locked [2022-11-19 08:12:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_up_phy [2022-11-19 08:12:55,331 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_up_phy [2022-11-19 08:12:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_tx_resources [2022-11-19 08:12:55,331 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_tx_resources [2022-11-19 08:12:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 08:12:55,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 08:12:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 08:12:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 08:12:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 08:12:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 08:12:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_netpoll [2022-11-19 08:12:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_netpoll [2022-11-19 08:12:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_init_hw [2022-11-19 08:12:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_init_hw [2022-11-19 08:12:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_rx_resources [2022-11-19 08:12:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_rx_resources [2022-11-19 08:12:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_tx_resources [2022-11-19 08:12:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_tx_resources [2022-11-19 08:12:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 08:12:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 08:12:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2022-11-19 08:12:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pch_gbe_exit_module_17_2 [2022-11-19 08:12:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 08:12:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 08:12:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 08:12:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 08:12:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-19 08:12:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-19 08:12:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure pch_set_station_address [2022-11-19 08:12:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_set_station_address [2022-11-19 08:12:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_26 [2022-11-19 08:12:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_26 [2022-11-19 08:12:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 08:12:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 08:12:55,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:12:55,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:12:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_write [2022-11-19 08:12:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_write [2022-11-19 08:12:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:12:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:12:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 08:12:55,339 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 08:12:55,339 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 08:12:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 08:12:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:12:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:12:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2022-11-19 08:12:55,340 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2022-11-19 08:12:55,340 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 08:12:55,341 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 08:12:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 08:12:55,341 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 08:12:55,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:12:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_up [2022-11-19 08:12:55,342 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_up [2022-11-19 08:12:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 08:12:55,342 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 08:12:55,342 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_resume [2022-11-19 08:12:55,343 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_resume [2022-11-19 08:12:55,343 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 08:12:55,344 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 08:12:55,344 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_write [2022-11-19 08:12:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_write [2022-11-19 08:12:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-19 08:12:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-19 08:12:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:12:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 08:12:55,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 08:12:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 08:12:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 08:12:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 08:12:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 08:12:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 08:12:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 08:12:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_enable_dma_rx [2022-11-19 08:12:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_enable_dma_rx [2022-11-19 08:12:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_configure_rx [2022-11-19 08:12:55,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_configure_rx [2022-11-19 08:12:55,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:12:55,348 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_wait_clr_bit [2022-11-19 08:12:55,349 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_wait_clr_bit [2022-11-19 08:12:55,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:12:55,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:12:55,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:12:55,353 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 08:12:55,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 08:12:55,354 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-19 08:12:55,355 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-19 08:12:55,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:12:55,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:12:55,360 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_remove [2022-11-19 08:12:55,361 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_remove [2022-11-19 08:12:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 08:12:55,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 08:12:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 08:12:55,361 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 08:12:55,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 08:12:55,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 08:12:55,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:12:55,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:12:55,362 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-19 08:12:55,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-19 08:12:55,362 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_force_mac_fc [2022-11-19 08:12:55,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_force_mac_fc [2022-11-19 08:12:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_suspend [2022-11-19 08:12:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_suspend [2022-11-19 08:12:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 08:12:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 08:12:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 08:12:55,363 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 08:12:55,363 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 08:12:55,364 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 08:12:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_set_value [2022-11-19 08:12:55,364 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_set_value [2022-11-19 08:12:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:12:55,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:12:55,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:12:55,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:12:55,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:12:55,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 08:12:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 08:12:55,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_5 [2022-11-19 08:12:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_5 [2022-11-19 08:12:55,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-19 08:12:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-19 08:12:55,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 08:12:55,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 08:12:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 08:12:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 08:12:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:12:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 08:12:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 08:12:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:12:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:12:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:12:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:12:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:12:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:12:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 08:12:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-19 08:12:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-19 08:12:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:12:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:12:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 08:12:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 08:12:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-19 08:12:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-19 08:12:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_set_wol_event [2022-11-19 08:12:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_set_wol_event [2022-11-19 08:12:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 08:12:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 08:12:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_ctrl_miim [2022-11-19 08:12:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_ctrl_miim [2022-11-19 08:12:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 08:12:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 08:12:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_get_regs_len [2022-11-19 08:12:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_get_regs_len [2022-11-19 08:12:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 08:12:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 08:12:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2022-11-19 08:12:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2022-11-19 08:12:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:12:55,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:12:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_alloc_rx_buffers [2022-11-19 08:12:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_alloc_rx_buffers [2022-11-19 08:12:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure __pch_gbe_suspend [2022-11-19 08:12:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __pch_gbe_suspend [2022-11-19 08:12:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 08:12:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 08:12:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_plat_get_bus_info [2022-11-19 08:12:55,372 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_plat_get_bus_info [2022-11-19 08:12:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 08:12:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 08:12:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_power_down [2022-11-19 08:12:55,373 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_power_down [2022-11-19 08:12:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:12:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:12:55,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:12:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:12:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure csum_tcpudp_magic [2022-11-19 08:12:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_tcpudp_magic [2022-11-19 08:12:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_update_stats [2022-11-19 08:12:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_update_stats [2022-11-19 08:12:55,374 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 08:12:55,374 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 08:12:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 08:12:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 08:12:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum [2022-11-19 08:12:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum [2022-11-19 08:12:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mdio_read [2022-11-19 08:12:55,375 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mdio_read [2022-11-19 08:12:55,375 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_rx_ring [2022-11-19 08:12:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_rx_ring [2022-11-19 08:12:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 08:12:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 08:12:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_up [2022-11-19 08:12:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_up [2022-11-19 08:12:55,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:12:55,376 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:12:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 08:12:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 08:12:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2022-11-19 08:12:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2022-11-19 08:12:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-19 08:12:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-19 08:12:55,377 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_clean_tx_ring [2022-11-19 08:12:55,377 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_clean_tx_ring [2022-11-19 08:12:55,379 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_reset [2022-11-19 08:12:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_reset [2022-11-19 08:12:55,382 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 08:12:55,382 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 08:12:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2022-11-19 08:12:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2022-11-19 08:12:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_stop_14_2 [2022-11-19 08:12:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_stop_14_2 [2022-11-19 08:12:55,383 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_stop [2022-11-19 08:12:55,383 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_stop [2022-11-19 08:12:55,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:12:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2022-11-19 08:12:55,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2022-11-19 08:12:55,385 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-19 08:12:55,386 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-19 08:12:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 08:12:55,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 08:12:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:12:55,386 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:12:55,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2022-11-19 08:12:55,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2022-11-19 08:12:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:12:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_io_resume [2022-11-19 08:12:55,387 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_io_resume [2022-11-19 08:12:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-19 08:12:55,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-19 08:12:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_event_read [2022-11-19 08:12:55,387 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_event_read [2022-11-19 08:12:55,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:12:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 08:12:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 08:12:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 08:12:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2022-11-19 08:12:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2022-11-19 08:12:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2022-11-19 08:12:55,388 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_nway_reset [2022-11-19 08:12:55,388 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_nway_reset [2022-11-19 08:12:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:12:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:12:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 08:12:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 08:12:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_irq_enable [2022-11-19 08:12:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_irq_enable [2022-11-19 08:12:55,389 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 08:12:55,389 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 08:12:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:12:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:12:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_hw_reset [2022-11-19 08:12:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_hw_reset [2022-11-19 08:12:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_tx_timeout [2022-11-19 08:12:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_tx_timeout [2022-11-19 08:12:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure mii_link_ok [2022-11-19 08:12:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_link_ok [2022-11-19 08:12:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:12:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:12:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:12:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:12:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_sset [2022-11-19 08:12:55,391 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_sset [2022-11-19 08:12:55,391 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_power_down_phy [2022-11-19 08:12:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_power_down_phy [2022-11-19 08:12:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-19 08:12:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-19 08:12:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_mode [2022-11-19 08:12:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_mode [2022-11-19 08:12:55,392 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 08:12:55,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 08:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 08:12:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 08:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rx_resources [2022-11-19 08:12:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rx_resources [2022-11-19 08:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:12:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:12:55,393 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:12:55,393 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_validate_option [2022-11-19 08:12:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_validate_option [2022-11-19 08:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_reset_hw [2022-11-19 08:12:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_reset_hw [2022-11-19 08:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure udp_hdr [2022-11-19 08:12:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure udp_hdr [2022-11-19 08:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:12:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_setup_rctl [2022-11-19 08:12:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_setup_rctl [2022-11-19 08:12:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_sw_reset [2022-11-19 08:12:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_sw_reset [2022-11-19 08:12:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:12:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:12:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_hal_phy_hw_reset [2022-11-19 08:12:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_hal_phy_hw_reset [2022-11-19 08:12:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_write_reg_miic [2022-11-19 08:12:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_write_reg_miic [2022-11-19 08:12:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 08:12:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 08:12:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 08:12:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 08:12:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure pch_ch_control_write [2022-11-19 08:12:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_ch_control_write [2022-11-19 08:12:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_multi [2022-11-19 08:12:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_multi [2022-11-19 08:12:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_shutdown [2022-11-19 08:12:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_shutdown [2022-11-19 08:12:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 08:12:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 08:12:55,397 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 08:12:55,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 08:12:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_phy_read_reg_miic [2022-11-19 08:12:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_phy_read_reg_miic [2022-11-19 08:12:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:12:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:12:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_read_mac_addr [2022-11-19 08:12:55,398 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_read_mac_addr [2022-11-19 08:12:55,398 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_set_rgmii_ctrl [2022-11-19 08:12:55,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_set_rgmii_ctrl [2022-11-19 08:12:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-19 08:12:55,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-19 08:12:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_down [2022-11-19 08:12:55,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_down [2022-11-19 08:12:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_free_irq [2022-11-19 08:12:55,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_free_irq [2022-11-19 08:12:55,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:12:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure pch_gbe_mac_mar_set [2022-11-19 08:12:55,400 INFO L138 BoogieDeclarations]: Found implementation of procedure pch_gbe_mac_mar_set [2022-11-19 08:12:55,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:12:55,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:12:56,969 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:12:56,973 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:12:57,516 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:13:14,870 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:13:15,255 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:13:18,591 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:13:18,592 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 08:13:18,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:18 BoogieIcfgContainer [2022-11-19 08:13:18,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:13:18,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:13:18,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:13:18,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:13:18,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:12:48" (1/3) ... [2022-11-19 08:13:18,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd40341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:18, skipping insertion in model container [2022-11-19 08:13:18,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:12:54" (2/3) ... [2022-11-19 08:13:18,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd40341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:13:18, skipping insertion in model container [2022-11-19 08:13:18,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:13:18" (3/3) ... [2022-11-19 08:13:18,614 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-oki-semi-pch_gbe-pch_gbe.cil.i [2022-11-19 08:13:18,633 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:13:18,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 08:13:18,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:13:18,761 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;@79de4b3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:13:18,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 08:13:18,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 2532 states, 1510 states have (on average 1.290728476821192) internal successors, (1949), 1554 states have internal predecessors, (1949), 852 states have call successors, (852), 170 states have call predecessors, (852), 169 states have return successors, (842), 825 states have call predecessors, (842), 842 states have call successors, (842) [2022-11-19 08:13:18,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-19 08:13:18,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:18,801 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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] [2022-11-19 08:13:18,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1632470456, now seen corresponding path program 1 times [2022-11-19 08:13:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:18,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022893594] [2022-11-19 08:13:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2022-11-19 08:13:20,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:20,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022893594] [2022-11-19 08:13:20,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022893594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:20,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:20,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:13:20,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154989980] [2022-11-19 08:13:20,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:20,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:20,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:20,626 INFO L87 Difference]: Start difference. First operand has 2532 states, 1510 states have (on average 1.290728476821192) internal successors, (1949), 1554 states have internal predecessors, (1949), 852 states have call successors, (852), 170 states have call predecessors, (852), 169 states have return successors, (842), 825 states have call predecessors, (842), 842 states have call successors, (842) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 08:13:26,177 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 08:13:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:32,026 INFO L93 Difference]: Finished difference Result 7295 states and 10616 transitions. [2022-11-19 08:13:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 234 [2022-11-19 08:13:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:32,085 INFO L225 Difference]: With dead ends: 7295 [2022-11-19 08:13:32,085 INFO L226 Difference]: Without dead ends: 4792 [2022-11-19 08:13:32,106 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 08:13:32,109 INFO L413 NwaCegarLoop]: 3820 mSDtfsCounter, 3291 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 6847 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:32,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 6847 Invalid, 1150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 1140 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2022-11-19 08:13:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2022-11-19 08:13:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4789. [2022-11-19 08:13:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 2861 states have (on average 1.283117790982174) internal successors, (3671), 2945 states have internal predecessors, (3671), 1592 states have call successors, (1592), 335 states have call predecessors, (1592), 334 states have return successors, (1589), 1555 states have call predecessors, (1589), 1589 states have call successors, (1589) [2022-11-19 08:13:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6852 transitions. [2022-11-19 08:13:32,579 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6852 transitions. Word has length 234 [2022-11-19 08:13:32,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:32,583 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 6852 transitions. [2022-11-19 08:13:32,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-19 08:13:32,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6852 transitions. [2022-11-19 08:13:32,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-19 08:13:32,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:32,602 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:13:32,603 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:32,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash -173140519, now seen corresponding path program 1 times [2022-11-19 08:13:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:32,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954214274] [2022-11-19 08:13:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:32,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1722 trivial. 0 not checked. [2022-11-19 08:13:33,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:33,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954214274] [2022-11-19 08:13:33,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954214274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:33,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:33,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:13:33,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773658653] [2022-11-19 08:13:33,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:33,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:33,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:33,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:33,807 INFO L87 Difference]: Start difference. First operand 4789 states and 6852 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:13:40,127 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 08:13:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:45,245 INFO L93 Difference]: Finished difference Result 11378 states and 16229 transitions. [2022-11-19 08:13:45,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 248 [2022-11-19 08:13:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:45,304 INFO L225 Difference]: With dead ends: 11378 [2022-11-19 08:13:45,304 INFO L226 Difference]: Without dead ends: 6632 [2022-11-19 08:13:45,332 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 08:13:45,333 INFO L413 NwaCegarLoop]: 3750 mSDtfsCounter, 2920 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 6743 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:45,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2920 Valid, 6743 Invalid, 1200 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1180 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2022-11-19 08:13:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6632 states. [2022-11-19 08:13:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 6623. [2022-11-19 08:13:45,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 3967 states have (on average 1.2772876228888328) internal successors, (5067), 4087 states have internal predecessors, (5067), 2169 states have call successors, (2169), 487 states have call predecessors, (2169), 485 states have return successors, (2166), 2114 states have call predecessors, (2166), 2166 states have call successors, (2166) [2022-11-19 08:13:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 9402 transitions. [2022-11-19 08:13:45,875 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 9402 transitions. Word has length 248 [2022-11-19 08:13:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:45,877 INFO L495 AbstractCegarLoop]: Abstraction has 6623 states and 9402 transitions. [2022-11-19 08:13:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-19 08:13:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 9402 transitions. [2022-11-19 08:13:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-19 08:13:45,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:45,888 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 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] [2022-11-19 08:13:45,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:13:45,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:45,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash 40516629, now seen corresponding path program 1 times [2022-11-19 08:13:45,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:45,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100499735] [2022-11-19 08:13:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:45,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:13:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1725 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2022-11-19 08:13:46,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:13:46,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100499735] [2022-11-19 08:13:46,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100499735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:13:46,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:13:46,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:13:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354576673] [2022-11-19 08:13:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:13:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:13:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:13:46,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:13:46,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:13:46,649 INFO L87 Difference]: Start difference. First operand 6623 states and 9402 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 08:13:51,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:13:54,269 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 08:13:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:58,901 INFO L93 Difference]: Finished difference Result 17586 states and 24974 transitions. [2022-11-19 08:13:58,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:13:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 261 [2022-11-19 08:13:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:58,989 INFO L225 Difference]: With dead ends: 17586 [2022-11-19 08:13:58,990 INFO L226 Difference]: Without dead ends: 11006 [2022-11-19 08:13:59,030 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 08:13:59,034 INFO L413 NwaCegarLoop]: 3840 mSDtfsCounter, 3433 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 6855 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:59,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3433 Valid, 6855 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1149 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-11-19 08:13:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11006 states. [2022-11-19 08:13:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11006 to 10993. [2022-11-19 08:13:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10993 states, 6587 states have (on average 1.2755427356915137) internal successors, (8402), 6795 states have internal predecessors, (8402), 3598 states have call successors, (3598), 809 states have call predecessors, (3598), 806 states have return successors, (3595), 3499 states have call predecessors, (3595), 3595 states have call successors, (3595) [2022-11-19 08:13:59,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10993 states to 10993 states and 15595 transitions. [2022-11-19 08:13:59,848 INFO L78 Accepts]: Start accepts. Automaton has 10993 states and 15595 transitions. Word has length 261 [2022-11-19 08:13:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:59,849 INFO L495 AbstractCegarLoop]: Abstraction has 10993 states and 15595 transitions. [2022-11-19 08:13:59,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-19 08:13:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 10993 states and 15595 transitions. [2022-11-19 08:13:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-11-19 08:13:59,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:59,865 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:13:59,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:13:59,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:13:59,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1414935372, now seen corresponding path program 1 times [2022-11-19 08:13:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:59,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530302246] [2022-11-19 08:13:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:59,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:14:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:14:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1894 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1894 trivial. 0 not checked. [2022-11-19 08:14:01,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:14:01,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530302246] [2022-11-19 08:14:01,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530302246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:14:01,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:14:01,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:14:01,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529009534] [2022-11-19 08:14:01,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:14:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:14:01,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:14:01,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:14:01,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:14:01,402 INFO L87 Difference]: Start difference. First operand 10993 states and 15595 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:14:06,475 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 08:14:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:14,207 INFO L93 Difference]: Finished difference Result 19708 states and 27946 transitions. [2022-11-19 08:14:14,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:14:14,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 277 [2022-11-19 08:14:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:14,336 INFO L225 Difference]: With dead ends: 19708 [2022-11-19 08:14:14,336 INFO L226 Difference]: Without dead ends: 19669 [2022-11-19 08:14:14,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:14:14,357 INFO L413 NwaCegarLoop]: 3808 mSDtfsCounter, 3316 mSDsluCounter, 6783 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 10591 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:14,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3316 Valid, 10591 Invalid, 1677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1676 Invalid, 1 Unknown, 0 Unchecked, 12.1s Time] [2022-11-19 08:14:14,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19669 states. [2022-11-19 08:14:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19669 to 19665. [2022-11-19 08:14:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19665 states, 11783 states have (on average 1.275566494101672) internal successors, (15030), 12149 states have internal predecessors, (15030), 6422 states have call successors, (6422), 1461 states have call predecessors, (6422), 1458 states have return successors, (6419), 6253 states have call predecessors, (6419), 6419 states have call successors, (6419) [2022-11-19 08:14:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19665 states to 19665 states and 27871 transitions. [2022-11-19 08:14:15,869 INFO L78 Accepts]: Start accepts. Automaton has 19665 states and 27871 transitions. Word has length 277 [2022-11-19 08:14:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:15,870 INFO L495 AbstractCegarLoop]: Abstraction has 19665 states and 27871 transitions. [2022-11-19 08:14:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 08:14:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 19665 states and 27871 transitions. [2022-11-19 08:14:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-11-19 08:14:15,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:15,896 INFO L195 NwaCegarLoop]: trace histogram [25, 21, 21, 21, 21, 21, 21, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:14:15,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:14:15,896 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:14:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1661130348, now seen corresponding path program 1 times [2022-11-19 08:14:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:14:15,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789410457] [2022-11-19 08:14:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:14:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:14:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:14:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1893 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2022-11-19 08:14:16,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:14:16,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789410457] [2022-11-19 08:14:16,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789410457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:14:16,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:14:16,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:14:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616326706] [2022-11-19 08:14:16,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:14:16,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:14:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:14:16,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:14:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:14:16,714 INFO L87 Difference]: Start difference. First operand 19665 states and 27871 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-19 08:14:22,904 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 08:14:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:27,080 INFO L93 Difference]: Finished difference Result 45499 states and 64491 transitions. [2022-11-19 08:14:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:14:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 297 [2022-11-19 08:14:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:27,251 INFO L225 Difference]: With dead ends: 45499 [2022-11-19 08:14:27,252 INFO L226 Difference]: Without dead ends: 27846 [2022-11-19 08:14:27,497 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 08:14:27,498 INFO L413 NwaCegarLoop]: 5436 mSDtfsCounter, 2914 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 8427 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:27,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2914 Valid, 8427 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1601 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-19 08:14:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27846 states. [2022-11-19 08:14:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27846 to 27833. [2022-11-19 08:14:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27833 states, 16681 states have (on average 1.2743840297344284) internal successors, (21258), 17205 states have internal predecessors, (21258), 9062 states have call successors, (9062), 2093 states have call predecessors, (9062), 2088 states have return successors, (9059), 8817 states have call predecessors, (9059), 9059 states have call successors, (9059) [2022-11-19 08:14:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27833 states to 27833 states and 39379 transitions. [2022-11-19 08:14:29,243 INFO L78 Accepts]: Start accepts. Automaton has 27833 states and 39379 transitions. Word has length 297 [2022-11-19 08:14:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:29,244 INFO L495 AbstractCegarLoop]: Abstraction has 27833 states and 39379 transitions. [2022-11-19 08:14:29,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-19 08:14:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 27833 states and 39379 transitions. [2022-11-19 08:14:29,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-19 08:14:29,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:29,285 INFO L195 NwaCegarLoop]: trace histogram [26, 21, 21, 21, 21, 21, 21, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:14:29,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:14:29,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:14:29,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:29,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1119763911, now seen corresponding path program 1 times [2022-11-19 08:14:29,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:14:29,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158649345] [2022-11-19 08:14:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:14:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:14:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:14:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1964 trivial. 0 not checked. [2022-11-19 08:14:30,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:14:30,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158649345] [2022-11-19 08:14:30,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158649345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:14:30,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:14:30,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:14:30,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307367349] [2022-11-19 08:14:30,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:14:30,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:14:30,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:14:30,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:14:30,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:14:30,278 INFO L87 Difference]: Start difference. First operand 27833 states and 39379 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:14:36,752 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 08:14:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:40,454 INFO L93 Difference]: Finished difference Result 66257 states and 93769 transitions. [2022-11-19 08:14:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:14:40,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 322 [2022-11-19 08:14:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:40,836 INFO L225 Difference]: With dead ends: 66257 [2022-11-19 08:14:40,836 INFO L226 Difference]: Without dead ends: 40436 [2022-11-19 08:14:40,927 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 08:14:40,929 INFO L413 NwaCegarLoop]: 5784 mSDtfsCounter, 3225 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3225 SdHoareTripleChecker+Valid, 8797 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:40,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3225 Valid, 8797 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1635 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 08:14:40,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40436 states. [2022-11-19 08:14:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40436 to 40414. [2022-11-19 08:14:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40414 states, 24213 states have (on average 1.2737372485854705) internal successors, (30841), 24986 states have internal predecessors, (30841), 13154 states have call successors, (13154), 3052 states have call predecessors, (13154), 3045 states have return successors, (13151), 12788 states have call predecessors, (13151), 13151 states have call successors, (13151) [2022-11-19 08:14:43,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40414 states to 40414 states and 57146 transitions. [2022-11-19 08:14:43,554 INFO L78 Accepts]: Start accepts. Automaton has 40414 states and 57146 transitions. Word has length 322 [2022-11-19 08:14:43,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:14:43,556 INFO L495 AbstractCegarLoop]: Abstraction has 40414 states and 57146 transitions. [2022-11-19 08:14:43,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-19 08:14:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 40414 states and 57146 transitions. [2022-11-19 08:14:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-11-19 08:14:43,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:14:43,622 INFO L195 NwaCegarLoop]: trace histogram [28, 21, 21, 21, 21, 21, 21, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:14:43,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:14:43,622 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:14:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:14:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 385269013, now seen corresponding path program 1 times [2022-11-19 08:14:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:14:43,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242362526] [2022-11-19 08:14:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:14:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:14:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:14:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2100 trivial. 0 not checked. [2022-11-19 08:14:45,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:14:45,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242362526] [2022-11-19 08:14:45,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242362526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:14:45,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:14:45,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:14:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244830123] [2022-11-19 08:14:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:14:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:14:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:14:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:14:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:14:45,613 INFO L87 Difference]: Start difference. First operand 40414 states and 57146 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-19 08:14:51,018 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 08:14:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:14:58,257 INFO L93 Difference]: Finished difference Result 40438 states and 57171 transitions. [2022-11-19 08:14:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:14:58,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 346 [2022-11-19 08:14:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:14:58,461 INFO L225 Difference]: With dead ends: 40438 [2022-11-19 08:14:58,462 INFO L226 Difference]: Without dead ends: 40436 [2022-11-19 08:14:58,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:14:58,623 INFO L413 NwaCegarLoop]: 3807 mSDtfsCounter, 3269 mSDsluCounter, 6783 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 10590 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:14:58,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3269 Valid, 10590 Invalid, 1677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1675 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2022-11-19 08:14:58,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40436 states. [2022-11-19 08:15:00,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40436 to 40414. [2022-11-19 08:15:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40414 states, 24213 states have (on average 1.2735307479453186) internal successors, (30836), 24986 states have internal predecessors, (30836), 13154 states have call successors, (13154), 3052 states have call predecessors, (13154), 3045 states have return successors, (13151), 12788 states have call predecessors, (13151), 13151 states have call successors, (13151) [2022-11-19 08:15:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40414 states to 40414 states and 57141 transitions. [2022-11-19 08:15:01,155 INFO L78 Accepts]: Start accepts. Automaton has 40414 states and 57141 transitions. Word has length 346 [2022-11-19 08:15:01,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:01,156 INFO L495 AbstractCegarLoop]: Abstraction has 40414 states and 57141 transitions. [2022-11-19 08:15:01,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-11-19 08:15:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 40414 states and 57141 transitions. [2022-11-19 08:15:01,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2022-11-19 08:15:01,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:01,315 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 19, 17, 12, 12, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:01,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:15:01,316 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:15:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1595776517, now seen corresponding path program 1 times [2022-11-19 08:15:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:01,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343682652] [2022-11-19 08:15:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:01,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3933 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3933 trivial. 0 not checked. [2022-11-19 08:15:04,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:04,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343682652] [2022-11-19 08:15:04,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343682652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:04,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:15:04,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:15:04,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322758894] [2022-11-19 08:15:04,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:15:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:15:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:15:04,010 INFO L87 Difference]: Start difference. First operand 40414 states and 57141 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-19 08:15:13,875 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 08:15:21,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:21,776 INFO L93 Difference]: Finished difference Result 120126 states and 177356 transitions. [2022-11-19 08:15:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:15:21,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 816 [2022-11-19 08:15:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:22,224 INFO L225 Difference]: With dead ends: 120126 [2022-11-19 08:15:22,225 INFO L226 Difference]: Without dead ends: 81724 [2022-11-19 08:15:22,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:15:22,409 INFO L413 NwaCegarLoop]: 5778 mSDtfsCounter, 2287 mSDsluCounter, 9117 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 634 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 14895 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:22,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2933 Valid, 14895 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 2525 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-11-19 08:15:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81724 states. [2022-11-19 08:15:25,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81724 to 40426. [2022-11-19 08:15:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40426 states, 24225 states have (on average 1.2733952528379773) internal successors, (30848), 24998 states have internal predecessors, (30848), 13154 states have call successors, (13154), 3052 states have call predecessors, (13154), 3045 states have return successors, (13151), 12788 states have call predecessors, (13151), 13151 states have call successors, (13151) [2022-11-19 08:15:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40426 states to 40426 states and 57153 transitions. [2022-11-19 08:15:25,946 INFO L78 Accepts]: Start accepts. Automaton has 40426 states and 57153 transitions. Word has length 816 [2022-11-19 08:15:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:25,948 INFO L495 AbstractCegarLoop]: Abstraction has 40426 states and 57153 transitions. [2022-11-19 08:15:25,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2022-11-19 08:15:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 40426 states and 57153 transitions. [2022-11-19 08:15:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2022-11-19 08:15:26,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:26,120 INFO L195 NwaCegarLoop]: trace histogram [33, 25, 25, 25, 25, 25, 25, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:26,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:15:26,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:15:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1051038590, now seen corresponding path program 1 times [2022-11-19 08:15:26,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:26,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83661016] [2022-11-19 08:15:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:26,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4259 trivial. 0 not checked. [2022-11-19 08:15:28,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:28,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83661016] [2022-11-19 08:15:28,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83661016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:28,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:15:28,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:15:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892677854] [2022-11-19 08:15:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:28,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:15:28,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:28,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:15:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:15:28,630 INFO L87 Difference]: Start difference. First operand 40426 states and 57153 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-19 08:15:36,955 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 08:15:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:15:45,141 INFO L93 Difference]: Finished difference Result 106782 states and 156038 transitions. [2022-11-19 08:15:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:15:45,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) Word has length 888 [2022-11-19 08:15:45,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:15:45,543 INFO L225 Difference]: With dead ends: 106782 [2022-11-19 08:15:45,544 INFO L226 Difference]: Without dead ends: 68368 [2022-11-19 08:15:45,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:15:45,659 INFO L413 NwaCegarLoop]: 4621 mSDtfsCounter, 2373 mSDsluCounter, 7660 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 664 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 12281 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:15:45,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 12281 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2095 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-11-19 08:15:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68368 states. [2022-11-19 08:15:48,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68368 to 40438. [2022-11-19 08:15:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40438 states, 24237 states have (on average 1.273259891900813) internal successors, (30860), 25010 states have internal predecessors, (30860), 13154 states have call successors, (13154), 3052 states have call predecessors, (13154), 3045 states have return successors, (13151), 12788 states have call predecessors, (13151), 13151 states have call successors, (13151) [2022-11-19 08:15:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40438 states to 40438 states and 57165 transitions. [2022-11-19 08:15:48,623 INFO L78 Accepts]: Start accepts. Automaton has 40438 states and 57165 transitions. Word has length 888 [2022-11-19 08:15:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:15:48,624 INFO L495 AbstractCegarLoop]: Abstraction has 40438 states and 57165 transitions. [2022-11-19 08:15:48,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (114), 2 states have call predecessors, (114), 2 states have call successors, (114) [2022-11-19 08:15:48,625 INFO L276 IsEmpty]: Start isEmpty. Operand 40438 states and 57165 transitions. [2022-11-19 08:15:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-11-19 08:15:48,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:48,704 INFO L195 NwaCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:15:48,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:15:48,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:15:48,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:48,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1540916725, now seen corresponding path program 1 times [2022-11-19 08:15:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:48,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040698978] [2022-11-19 08:15:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:48,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:15:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2022-11-19 08:15:51,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:15:51,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040698978] [2022-11-19 08:15:51,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040698978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:15:51,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:15:51,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:15:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136664330] [2022-11-19 08:15:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:15:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:15:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:15:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:15:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:15:51,102 INFO L87 Difference]: Start difference. First operand 40438 states and 57165 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-19 08:15:59,611 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 08:16:11,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:11,936 INFO L93 Difference]: Finished difference Result 120384 states and 177728 transitions. [2022-11-19 08:16:11,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:16:11,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 902 [2022-11-19 08:16:11,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:12,290 INFO L225 Difference]: With dead ends: 120384 [2022-11-19 08:16:12,290 INFO L226 Difference]: Without dead ends: 81958 [2022-11-19 08:16:12,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:12,421 INFO L413 NwaCegarLoop]: 5819 mSDtfsCounter, 2307 mSDsluCounter, 9167 mSDsCounter, 0 mSdLazyCounter, 2536 mSolverCounterSat, 635 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 14986 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:12,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2967 Valid, 14986 Invalid, 3172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [635 Valid, 2536 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-11-19 08:16:12,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81958 states. [2022-11-19 08:16:16,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81958 to 40450. [2022-11-19 08:16:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40450 states, 24249 states have (on average 1.2731246649346364) internal successors, (30872), 25022 states have internal predecessors, (30872), 13154 states have call successors, (13154), 3052 states have call predecessors, (13154), 3045 states have return successors, (13151), 12788 states have call predecessors, (13151), 13151 states have call successors, (13151) [2022-11-19 08:16:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40450 states to 40450 states and 57177 transitions. [2022-11-19 08:16:16,937 INFO L78 Accepts]: Start accepts. Automaton has 40450 states and 57177 transitions. Word has length 902 [2022-11-19 08:16:16,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:16,939 INFO L495 AbstractCegarLoop]: Abstraction has 40450 states and 57177 transitions. [2022-11-19 08:16:16,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-19 08:16:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 40450 states and 57177 transitions. [2022-11-19 08:16:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2022-11-19 08:16:17,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:17,087 INFO L195 NwaCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 26, 20, 18, 12, 12, 10, 9, 9, 9, 9, 9, 9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:16:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 08:16:17,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:17,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1564311791, now seen corresponding path program 1 times [2022-11-19 08:16:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:16:17,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144243232] [2022-11-19 08:16:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:17,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:16:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2022-11-19 08:16:19,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:16:19,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144243232] [2022-11-19 08:16:19,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144243232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:19,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:19,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:16:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689407608] [2022-11-19 08:16:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:16:19,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:16:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:16:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:16:19,508 INFO L87 Difference]: Start difference. First operand 40450 states and 57177 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-19 08:16:26,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:16:28,187 WARN L539 Checker$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 08:16:30,197 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 08:16:43,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:43,967 INFO L93 Difference]: Finished difference Result 87871 states and 129329 transitions. [2022-11-19 08:16:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:16:43,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 903 [2022-11-19 08:16:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:44,301 INFO L225 Difference]: With dead ends: 87871 [2022-11-19 08:16:44,301 INFO L226 Difference]: Without dead ends: 68452 [2022-11-19 08:16:44,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:16:44,381 INFO L413 NwaCegarLoop]: 4678 mSDtfsCounter, 2331 mSDsluCounter, 7715 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 634 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 12393 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-19 08:16:44,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2684 Valid, 12393 Invalid, 2786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [634 Valid, 2150 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2022-11-19 08:16:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68452 states.