./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-dec-tulip-tulip.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/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_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/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-dec-tulip-tulip.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/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_ac625872-639a-4524-ba55-d221d74b4ae7/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 b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 --- 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 06:50:58,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:50:58,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:50:58,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:50:58,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:50:58,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:50:58,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:50:58,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:50:58,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:50:58,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:50:58,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:50:58,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:50:58,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:50:58,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:50:58,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:50:58,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:50:58,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:50:58,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:50:58,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:50:58,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:50:58,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:50:58,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:50:58,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:50:58,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:50:58,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:50:58,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:50:58,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:50:58,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:50:58,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:50:58,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:50:58,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:50:58,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:50:58,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:50:58,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:50:58,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:50:58,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:50:58,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:50:58,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:50:58,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:50:58,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:50:58,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:50:58,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:50:58,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:50:58,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:50:58,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:50:58,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:50:58,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:50:58,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:50:58,216 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:50:58,217 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:50:58,217 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:50:58,217 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:50:58,219 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:50:58,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:50:58,219 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:50:58,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:50:58,220 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:50:58,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:50:58,220 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:50:58,221 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:50:58,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:50:58,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:50:58,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:50:58,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:50:58,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:50:58,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:50:58,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:50:58,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:50:58,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:50:58,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:50:58,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:50:58,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:50:58,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:50:58,226 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:50:58,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:50:58,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:50:58,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:50:58,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:50:58,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:50:58,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:50:58,229 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_ac625872-639a-4524-ba55-d221d74b4ae7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d2eeaaae10ee4c57bd86d22cba165fc727430aa2a7f660f053fb73e5712838 [2022-11-19 06:50:58,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:50:58,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:50:58,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:50:58,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:50:58,632 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:50:58,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-19 06:50:58,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/data/112fd300a/07ccc0a2326046308d84d939590f927e/FLAG43bf72c9f [2022-11-19 06:51:00,120 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:51:00,121 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-19 06:51:00,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/data/112fd300a/07ccc0a2326046308d84d939590f927e/FLAG43bf72c9f [2022-11-19 06:51:00,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/data/112fd300a/07ccc0a2326046308d84d939590f927e [2022-11-19 06:51:00,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:51:00,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:51:00,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:00,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:51:00,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:51:00,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:00" (1/1) ... [2022-11-19 06:51:00,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4394bb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:00, skipping insertion in model container [2022-11-19 06:51:00,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:00" (1/1) ... [2022-11-19 06:51:00,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:51:01,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:51:06,088 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2022-11-19 06:51:06,097 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2022-11-19 06:51:06,098 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2022-11-19 06:51:06,099 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2022-11-19 06:51:06,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:06,241 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:51:06,886 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454757,454770] [2022-11-19 06:51:06,887 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[454904,454917] [2022-11-19 06:51:06,887 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455043,455056] [2022-11-19 06:51:06,888 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_ac625872-639a-4524-ba55-d221d74b4ae7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i[455201,455214] [2022-11-19 06:51:06,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:07,212 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:51:07,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07 WrapperNode [2022-11-19 06:51:07,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:07,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:07,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:51:07,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:51:07,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:07,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:07,960 INFO L138 Inliner]: procedures = 460, calls = 5123, calls flagged for inlining = 268, calls inlined = 251, statements flattened = 11415 [2022-11-19 06:51:07,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:07,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:51:07,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:51:07,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:51:07,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:07,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,606 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:51:08,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:51:08,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:51:08,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:51:08,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (1/1) ... [2022-11-19 06:51:08,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:08,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:08,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:51:08,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:51:08,815 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_up [2022-11-19 06:51:08,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_up [2022-11-19 06:51:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_media_task [2022-11-19 06:51:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_media_task [2022-11-19 06:51:08,816 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 06:51:08,816 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 06:51:08,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:51:08,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:51:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 06:51:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 06:51:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 06:51:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 06:51:08,905 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_select_media [2022-11-19 06:51:08,905 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_select_media [2022-11-19 06:51:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit_le [2022-11-19 06:51:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit_le [2022-11-19 06:51:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:51:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:51:08,906 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 06:51:08,906 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 06:51:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 06:51:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 06:51:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-19 06:51:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-19 06:51:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:51:08,907 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:51:08,907 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-19 06:51:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-19 06:51:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 06:51:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 06:51:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 06:51:08,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 06:51:08,908 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-19 06:51:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-19 06:51:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:51:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:51:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 06:51:08,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 06:51:08,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:51:08,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:51:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_do_nway [2022-11-19 06:51:08,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_do_nway [2022-11-19 06:51:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 06:51:08,910 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 06:51:08,910 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 06:51:08,910 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 06:51:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 06:51:08,911 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 06:51:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:51:08,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:51:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:51:08,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:51:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-19 06:51:08,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-19 06:51:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:51:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_wolopts [2022-11-19 06:51:08,912 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_wolopts [2022-11-19 06:51:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_resume [2022-11-19 06:51:08,912 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_resume [2022-11-19 06:51:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-19 06:51:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-19 06:51:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_interrupt [2022-11-19 06:51:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_interrupt [2022-11-19 06:51:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 06:51:08,915 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 06:51:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:51:08,916 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:51:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___3 [2022-11-19 06:51:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___3 [2022-11-19 06:51:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___1 [2022-11-19 06:51:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___1 [2022-11-19 06:51:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_media_task [2022-11-19 06:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_media_task [2022-11-19 06:51:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:51:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx___4 [2022-11-19 06:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx___4 [2022-11-19 06:51:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 06:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 06:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 06:51:08,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 06:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:51:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:51:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:51:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:51:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-19 06:51:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-19 06:51:08,922 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 06:51:08,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 06:51:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:51:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:51:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 06:51:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 06:51:08,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:51:08,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:51:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:51:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:51:08,924 INFO L130 BoogieDeclarations]: Found specification of procedure pnic_timer [2022-11-19 06:51:08,924 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic_timer [2022-11-19 06:51:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 06:51:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 06:51:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 06:51:08,925 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 06:51:08,925 INFO L130 BoogieDeclarations]: Found specification of procedure poll_tulip [2022-11-19 06:51:08,926 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_tulip [2022-11-19 06:51:08,927 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_write [2022-11-19 06:51:08,931 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_write [2022-11-19 06:51:08,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:51:08,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 06:51:08,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 06:51:08,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 06:51:08,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 06:51:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 06:51:08,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 06:51:08,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 06:51:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 06:51:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:51:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:51:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:51:08,941 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 06:51:08,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 06:51:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:51:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure t21142_start_nway [2022-11-19 06:51:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure t21142_start_nway [2022-11-19 06:51:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-19 06:51:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-19 06:51:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-19 06:51:08,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-19 06:51:08,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:51:08,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:51:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 06:51:08,944 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 06:51:08,944 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:51:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:51:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 06:51:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 06:51:08,945 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:51:08,945 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:51:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:51:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:51:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_close [2022-11-19 06:51:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_close [2022-11-19 06:51:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:51:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:51:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:51:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:51:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-19 06:51:08,947 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-19 06:51:08,947 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 06:51:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 06:51:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_set_power_state [2022-11-19 06:51:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_set_power_state [2022-11-19 06:51:08,948 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 06:51:08,948 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 06:51:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-19 06:51:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_tulip_cleanup_19_2 [2022-11-19 06:51:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-19 06:51:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-19 06:51:08,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 06:51:08,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 06:51:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_tx_timeout [2022-11-19 06:51:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_tx_timeout [2022-11-19 06:51:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_check_duplex [2022-11-19 06:51:08,950 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_check_duplex [2022-11-19 06:51:08,950 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 06:51:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 06:51:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-19 06:51:08,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-19 06:51:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le16 [2022-11-19 06:51:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le16 [2022-11-19 06:51:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:51:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:51:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 06:51:08,953 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 06:51:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure comet_timer [2022-11-19 06:51:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure comet_timer [2022-11-19 06:51:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-19 06:51:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-19 06:51:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 06:51:08,954 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 06:51:08,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:51:08,955 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_mdio_read [2022-11-19 06:51:08,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_mdio_read [2022-11-19 06:51:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 06:51:08,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 06:51:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:51:08,956 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 06:51:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 06:51:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-19 06:51:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-19 06:51:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure pci_clear_mwi [2022-11-19 06:51:08,957 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_clear_mwi [2022-11-19 06:51:08,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:51:08,959 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_down [2022-11-19 06:51:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_down [2022-11-19 06:51:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_stop_rxtx___2 [2022-11-19 06:51:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_stop_rxtx___2 [2022-11-19 06:51:08,960 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 06:51:08,960 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 06:51:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_remove_one [2022-11-19 06:51:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_remove_one [2022-11-19 06:51:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 06:51:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 06:51:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-19 06:51:08,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-19 06:51:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure mxic_timer [2022-11-19 06:51:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure mxic_timer [2022-11-19 06:51:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:51:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:51:08,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 06:51:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 06:51:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_free_ring [2022-11-19 06:51:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_free_ring [2022-11-19 06:51:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 06:51:08,963 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 06:51:08,963 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_refill_rx [2022-11-19 06:51:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_refill_rx [2022-11-19 06:51:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_timer [2022-11-19 06:51:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_timer [2022-11-19 06:51:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 06:51:08,964 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 06:51:08,964 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 06:51:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 06:51:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 06:51:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 06:51:08,965 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 06:51:08,965 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 06:51:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:51:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:51:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:51:08,966 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_restart_rxtx [2022-11-19 06:51:08,966 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_restart_rxtx [2022-11-19 06:51:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:51:08,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:51:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-19 06:51:08,973 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-19 06:51:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_start_rxtx [2022-11-19 06:51:08,973 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_start_rxtx [2022-11-19 06:51:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:51:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:51:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_open [2022-11-19 06:51:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_open [2022-11-19 06:51:08,974 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-19 06:51:08,976 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-19 06:51:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:51:08,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:51:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 06:51:08,977 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 06:51:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-19 06:51:08,977 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-19 06:51:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 06:51:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 06:51:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure pnic2_start_nway [2022-11-19 06:51:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure pnic2_start_nway [2022-11-19 06:51:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 06:51:08,978 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 06:51:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_read_eeprom [2022-11-19 06:51:08,979 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_read_eeprom [2022-11-19 06:51:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 06:51:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 06:51:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:51:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_timer [2022-11-19 06:51:08,980 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_timer [2022-11-19 06:51:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:51:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:51:10,530 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:51:10,539 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:51:12,334 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:51:24,720 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 06:51:25,005 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:51:31,411 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:51:31,411 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-11-19 06:51:31,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:31 BoogieIcfgContainer [2022-11-19 06:51:31,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:51:31,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:51:31,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:51:31,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:51:31,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:51:00" (1/3) ... [2022-11-19 06:51:31,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37528875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:31, skipping insertion in model container [2022-11-19 06:51:31,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:07" (2/3) ... [2022-11-19 06:51:31,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37528875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:31, skipping insertion in model container [2022-11-19 06:51:31,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:31" (3/3) ... [2022-11-19 06:51:31,431 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-dec-tulip-tulip.cil.i [2022-11-19 06:51:31,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:51:31,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:51:31,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:51:31,648 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;@2845fad8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:51:31,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:51:31,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 2560 states, 1522 states have (on average 1.354796320630749) internal successors, (2062), 1622 states have internal predecessors, (2062), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 862 states have call predecessors, (907), 907 states have call successors, (907) [2022-11-19 06:51:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-19 06:51:31,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:31,691 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:31,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1206286381, now seen corresponding path program 1 times [2022-11-19 06:51:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:31,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013051549] [2022-11-19 06:51:31,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 06:51:33,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:33,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013051549] [2022-11-19 06:51:33,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013051549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:33,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:33,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031298427] [2022-11-19 06:51:33,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:33,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:33,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:33,465 INFO L87 Difference]: Start difference. First operand has 2560 states, 1522 states have (on average 1.354796320630749) internal successors, (2062), 1622 states have internal predecessors, (2062), 914 states have call successors, (914), 124 states have call predecessors, (914), 123 states have return successors, (907), 862 states have call predecessors, (907), 907 states have call successors, (907) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:51:41,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:43,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:43,522 INFO L93 Difference]: Finished difference Result 7400 states and 11257 transitions. [2022-11-19 06:51:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:43,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2022-11-19 06:51:43,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:43,626 INFO L225 Difference]: With dead ends: 7400 [2022-11-19 06:51:43,626 INFO L226 Difference]: Without dead ends: 4856 [2022-11-19 06:51:43,660 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 06:51:43,665 INFO L413 NwaCegarLoop]: 4262 mSDtfsCounter, 3514 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3514 SdHoareTripleChecker+Valid, 7656 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:43,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3514 Valid, 7656 Invalid, 908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 900 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-19 06:51:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4856 states. [2022-11-19 06:51:44,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4856 to 4843. [2022-11-19 06:51:44,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4843 states, 2877 states have (on average 1.3461939520333681) internal successors, (3873), 3064 states have internal predecessors, (3873), 1724 states have call successors, (1724), 241 states have call predecessors, (1724), 240 states have return successors, (1721), 1636 states have call predecessors, (1721), 1721 states have call successors, (1721) [2022-11-19 06:51:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4843 states to 4843 states and 7318 transitions. [2022-11-19 06:51:44,714 INFO L78 Accepts]: Start accepts. Automaton has 4843 states and 7318 transitions. Word has length 150 [2022-11-19 06:51:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:44,718 INFO L495 AbstractCegarLoop]: Abstraction has 4843 states and 7318 transitions. [2022-11-19 06:51:44,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:51:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4843 states and 7318 transitions. [2022-11-19 06:51:44,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 06:51:44,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:44,742 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:51:44,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:51:44,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:44,744 INFO L85 PathProgramCache]: Analyzing trace with hash 792814648, now seen corresponding path program 1 times [2022-11-19 06:51:44,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:44,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862031759] [2022-11-19 06:51:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:44,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 06:51:45,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:45,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862031759] [2022-11-19 06:51:45,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862031759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:45,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:45,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769390377] [2022-11-19 06:51:45,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:45,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:45,850 INFO L87 Difference]: Start difference. First operand 4843 states and 7318 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:51:54,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:55,126 INFO L93 Difference]: Finished difference Result 10690 states and 16175 transitions. [2022-11-19 06:51:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:55,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 163 [2022-11-19 06:51:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:55,178 INFO L225 Difference]: With dead ends: 10690 [2022-11-19 06:51:55,179 INFO L226 Difference]: Without dead ends: 5874 [2022-11-19 06:51:55,207 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 06:51:55,208 INFO L413 NwaCegarLoop]: 3986 mSDtfsCounter, 2521 mSDsluCounter, 3371 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 7357 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:55,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2521 Valid, 7357 Invalid, 947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 929 Invalid, 1 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 06:51:55,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2022-11-19 06:51:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5867. [2022-11-19 06:51:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 3536 states have (on average 1.3523755656108598) internal successors, (4782), 3752 states have internal predecessors, (4782), 2041 states have call successors, (2041), 290 states have call predecessors, (2041), 288 states have return successors, (2038), 1938 states have call predecessors, (2038), 2038 states have call successors, (2038) [2022-11-19 06:51:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 8861 transitions. [2022-11-19 06:51:55,755 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 8861 transitions. Word has length 163 [2022-11-19 06:51:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:55,756 INFO L495 AbstractCegarLoop]: Abstraction has 5867 states and 8861 transitions. [2022-11-19 06:51:55,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:51:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 8861 transitions. [2022-11-19 06:51:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-19 06:51:55,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:55,772 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 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] [2022-11-19 06:51:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:51:55,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:55,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:55,773 INFO L85 PathProgramCache]: Analyzing trace with hash -680150138, now seen corresponding path program 1 times [2022-11-19 06:51:55,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:55,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698283750] [2022-11-19 06:51:55,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:55,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-19 06:51:57,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:57,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698283750] [2022-11-19 06:51:57,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698283750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:57,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:57,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:51:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781736060] [2022-11-19 06:51:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:57,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:51:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:51:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:57,261 INFO L87 Difference]: Start difference. First operand 5867 states and 8861 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:52:04,504 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 06:52:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:08,774 INFO L93 Difference]: Finished difference Result 9913 states and 14955 transitions. [2022-11-19 06:52:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 192 [2022-11-19 06:52:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:08,940 INFO L225 Difference]: With dead ends: 9913 [2022-11-19 06:52:08,940 INFO L226 Difference]: Without dead ends: 9890 [2022-11-19 06:52:08,948 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 06:52:08,952 INFO L413 NwaCegarLoop]: 4252 mSDtfsCounter, 3536 mSDsluCounter, 7620 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 11872 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:08,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 11872 Invalid, 1327 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1326 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 06:52:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2022-11-19 06:52:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 9877. [2022-11-19 06:52:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9877 states, 5941 states have (on average 1.349436121865006) internal successors, (8017), 6301 states have internal predecessors, (8017), 3441 states have call successors, (3441), 495 states have call predecessors, (3441), 493 states have return successors, (3438), 3272 states have call predecessors, (3438), 3438 states have call successors, (3438) [2022-11-19 06:52:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9877 states to 9877 states and 14896 transitions. [2022-11-19 06:52:09,874 INFO L78 Accepts]: Start accepts. Automaton has 9877 states and 14896 transitions. Word has length 192 [2022-11-19 06:52:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:09,876 INFO L495 AbstractCegarLoop]: Abstraction has 9877 states and 14896 transitions. [2022-11-19 06:52:09,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 06:52:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 9877 states and 14896 transitions. [2022-11-19 06:52:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-19 06:52:09,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:09,902 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 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] [2022-11-19 06:52:09,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:52:09,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:09,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:09,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1064475940, now seen corresponding path program 1 times [2022-11-19 06:52:09,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:09,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498856585] [2022-11-19 06:52:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:09,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2022-11-19 06:52:10,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:10,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498856585] [2022-11-19 06:52:10,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498856585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:10,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:10,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:10,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185756501] [2022-11-19 06:52:10,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:10,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:10,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:10,868 INFO L87 Difference]: Start difference. First operand 9877 states and 14896 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-19 06:52:19,780 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 06:52:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:20,880 INFO L93 Difference]: Finished difference Result 21465 states and 32389 transitions. [2022-11-19 06:52:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 210 [2022-11-19 06:52:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:21,006 INFO L225 Difference]: With dead ends: 21465 [2022-11-19 06:52:21,006 INFO L226 Difference]: Without dead ends: 13252 [2022-11-19 06:52:21,073 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 06:52:21,074 INFO L413 NwaCegarLoop]: 5648 mSDtfsCounter, 2525 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 9017 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:21,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 9017 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1198 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2022-11-19 06:52:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13252 states. [2022-11-19 06:52:22,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13252 to 13244. [2022-11-19 06:52:22,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 7986 states have (on average 1.350237916353619) internal successors, (10783), 8463 states have internal predecessors, (10783), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4368 states have call predecessors, (4590), 4590 states have call successors, (4590) [2022-11-19 06:52:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 19966 transitions. [2022-11-19 06:52:22,669 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 19966 transitions. Word has length 210 [2022-11-19 06:52:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:22,670 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 19966 transitions. [2022-11-19 06:52:22,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-19 06:52:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 19966 transitions. [2022-11-19 06:52:22,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-11-19 06:52:22,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:22,724 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:52:22,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:52:22,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:22,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash 226165354, now seen corresponding path program 1 times [2022-11-19 06:52:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:22,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114510561] [2022-11-19 06:52:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 953 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 953 trivial. 0 not checked. [2022-11-19 06:52:24,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:24,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114510561] [2022-11-19 06:52:24,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114510561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:24,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:24,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:24,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658197862] [2022-11-19 06:52:24,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:24,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:24,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:24,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:24,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:24,336 INFO L87 Difference]: Start difference. First operand 13244 states and 19966 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 06:52:32,232 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 06:52:36,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:36,842 INFO L93 Difference]: Finished difference Result 15439 states and 23530 transitions. [2022-11-19 06:52:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:52:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 272 [2022-11-19 06:52:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:36,950 INFO L225 Difference]: With dead ends: 15439 [2022-11-19 06:52:36,950 INFO L226 Difference]: Without dead ends: 15437 [2022-11-19 06:52:36,961 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 06:52:36,962 INFO L413 NwaCegarLoop]: 4942 mSDtfsCounter, 4578 mSDsluCounter, 8368 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 13310 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:36,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4747 Valid, 13310 Invalid, 1844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [167 Valid, 1676 Invalid, 1 Unknown, 0 Unchecked, 11.9s Time] [2022-11-19 06:52:36,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15437 states. [2022-11-19 06:52:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15437 to 13244. [2022-11-19 06:52:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 7986 states have (on average 1.3501126972201352) internal successors, (10782), 8463 states have internal predecessors, (10782), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4368 states have call predecessors, (4590), 4590 states have call successors, (4590) [2022-11-19 06:52:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 19965 transitions. [2022-11-19 06:52:38,260 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 19965 transitions. Word has length 272 [2022-11-19 06:52:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:38,261 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 19965 transitions. [2022-11-19 06:52:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 06:52:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 19965 transitions. [2022-11-19 06:52:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2022-11-19 06:52:38,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:38,334 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:38,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:52:38,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:38,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash -789160811, now seen corresponding path program 1 times [2022-11-19 06:52:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:38,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145524580] [2022-11-19 06:52:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1379 trivial. 0 not checked. [2022-11-19 06:52:39,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145524580] [2022-11-19 06:52:39,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145524580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:39,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:39,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:39,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305596478] [2022-11-19 06:52:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:39,761 INFO L87 Difference]: Start difference. First operand 13244 states and 19965 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 06:52:46,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:47,081 INFO L93 Difference]: Finished difference Result 21240 states and 32289 transitions. [2022-11-19 06:52:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 413 [2022-11-19 06:52:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:47,175 INFO L225 Difference]: With dead ends: 21240 [2022-11-19 06:52:47,175 INFO L226 Difference]: Without dead ends: 15350 [2022-11-19 06:52:47,206 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 06:52:47,207 INFO L413 NwaCegarLoop]: 4099 mSDtfsCounter, 513 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 7593 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:47,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 7593 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 964 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-19 06:52:47,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15350 states. [2022-11-19 06:52:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15350 to 13252. [2022-11-19 06:52:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13252 states, 7994 states have (on average 1.349762321741306) internal successors, (10790), 8471 states have internal predecessors, (10790), 4593 states have call successors, (4593), 666 states have call predecessors, (4593), 663 states have return successors, (4590), 4368 states have call predecessors, (4590), 4590 states have call successors, (4590) [2022-11-19 06:52:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13252 states to 13252 states and 19973 transitions. [2022-11-19 06:52:48,488 INFO L78 Accepts]: Start accepts. Automaton has 13252 states and 19973 transitions. Word has length 413 [2022-11-19 06:52:48,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:48,490 INFO L495 AbstractCegarLoop]: Abstraction has 13252 states and 19973 transitions. [2022-11-19 06:52:48,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (53), 1 states have call predecessors, (53), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-19 06:52:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 13252 states and 19973 transitions. [2022-11-19 06:52:48,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-11-19 06:52:48,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:48,569 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:48,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:52:48,570 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:48,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash 527451808, now seen corresponding path program 1 times [2022-11-19 06:52:48,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:48,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253044329] [2022-11-19 06:52:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:48,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1384 trivial. 0 not checked. [2022-11-19 06:52:50,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:50,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253044329] [2022-11-19 06:52:50,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253044329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:50,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808604822] [2022-11-19 06:52:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:50,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:50,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:50,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:50,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:52:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:53,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 8251 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:52:53,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1385 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-11-19 06:52:53,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:53,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808604822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:53,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:52:53,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-19 06:52:53,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783824917] [2022-11-19 06:52:53,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:53,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:53,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:53,678 INFO L87 Difference]: Start difference. First operand 13252 states and 19973 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 06:53:00,696 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 06:53:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:02,281 INFO L93 Difference]: Finished difference Result 20378 states and 30869 transitions. [2022-11-19 06:53:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 428 [2022-11-19 06:53:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:02,389 INFO L225 Difference]: With dead ends: 20378 [2022-11-19 06:53:02,389 INFO L226 Difference]: Without dead ends: 14481 [2022-11-19 06:53:02,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:53:02,431 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 547 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 7746 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:02,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 7746 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1035 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-19 06:53:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14481 states. [2022-11-19 06:53:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14481 to 13458. [2022-11-19 06:53:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13458 states, 8139 states have (on average 1.3507801941270425) internal successors, (10994), 8623 states have internal predecessors, (10994), 4654 states have call successors, (4654), 666 states have call predecessors, (4654), 663 states have return successors, (4651), 4428 states have call predecessors, (4651), 4651 states have call successors, (4651) [2022-11-19 06:53:03,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13458 states to 13458 states and 20299 transitions. [2022-11-19 06:53:03,655 INFO L78 Accepts]: Start accepts. Automaton has 13458 states and 20299 transitions. Word has length 428 [2022-11-19 06:53:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:03,658 INFO L495 AbstractCegarLoop]: Abstraction has 13458 states and 20299 transitions. [2022-11-19 06:53:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 06:53:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13458 states and 20299 transitions. [2022-11-19 06:53:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-19 06:53:03,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:03,717 INFO L195 NwaCegarLoop]: trace histogram [23, 15, 15, 15, 15, 15, 15, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:53:03,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 06:53:03,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:03,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1515400309, now seen corresponding path program 1 times [2022-11-19 06:53:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:03,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63492853] [2022-11-19 06:53:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:03,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2022-11-19 06:53:05,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:05,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63492853] [2022-11-19 06:53:05,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63492853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:53:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833449298] [2022-11-19 06:53:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:05,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:05,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:05,370 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:05,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac625872-639a-4524-ba55-d221d74b4ae7/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:53:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:08,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 8269 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:53:08,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 129 proven. 1 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2022-11-19 06:53:08,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1384 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1383 trivial. 0 not checked. [2022-11-19 06:53:09,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833449298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:09,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1039418294] [2022-11-19 06:53:09,256 INFO L159 IcfgInterpreter]: Started Sifa with 224 locations of interest [2022-11-19 06:53:09,256 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:53:09,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:53:09,270 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:53:09,271 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs