./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-intel-ixgbevf-ixgbevf.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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/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-intel-ixgbevf-ixgbevf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/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 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:36:43,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:36:43,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:36:43,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:36:43,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:36:43,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:36:43,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:36:43,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:36:43,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:36:43,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:36:43,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:36:43,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:36:43,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:36:43,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:36:43,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:36:43,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:36:43,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:36:43,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:36:43,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:36:43,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:36:43,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:36:43,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:36:43,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:36:43,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:36:43,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:36:43,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:36:43,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:36:43,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:36:43,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:36:43,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:36:43,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:36:43,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:36:43,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:36:43,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:36:43,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:36:43,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:36:43,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:36:43,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:36:43,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:36:43,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:36:43,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:36:43,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:36:43,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:36:43,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:36:43,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:36:43,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:36:43,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:36:43,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:36:43,317 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:36:43,317 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:36:43,317 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:36:43,317 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:36:43,319 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:36:43,319 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:36:43,319 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:36:43,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:36:43,320 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:36:43,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:36:43,321 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:36:43,321 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:36:43,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:36:43,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:36:43,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:36:43,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:36:43,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:36:43,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:36:43,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:36:43,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:36:43,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:36:43,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:36:43,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:36:43,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:36:43,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:36:43,328 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:36:43,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:36:43,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:36:43,329 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:36:43,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:36:43,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:36:43,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:36:43,330 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 [2022-11-19 07:36:43,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:36:43,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:36:43,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:36:43,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:36:43,720 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:36:43,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-19 07:36:43,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/data/1ff996614/7b5a55abf15f41f5a42338b566d3f80e/FLAG750fc0e16 [2022-11-19 07:36:45,124 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:36:45,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-19 07:36:45,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/data/1ff996614/7b5a55abf15f41f5a42338b566d3f80e/FLAG750fc0e16 [2022-11-19 07:36:45,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/data/1ff996614/7b5a55abf15f41f5a42338b566d3f80e [2022-11-19 07:36:45,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:36:45,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:36:45,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:36:45,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:36:45,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:36:45,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:45" (1/1) ... [2022-11-19 07:36:45,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59766cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:45, skipping insertion in model container [2022-11-19 07:36:45,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:36:45" (1/1) ... [2022-11-19 07:36:45,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:36:45,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:36:51,495 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513173,513186] [2022-11-19 07:36:51,500 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513320,513333] [2022-11-19 07:36:51,501 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513459,513472] [2022-11-19 07:36:51,502 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513617,513630] [2022-11-19 07:36:51,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:36:51,674 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:36:52,395 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513173,513186] [2022-11-19 07:36:52,396 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513320,513333] [2022-11-19 07:36:52,396 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513459,513472] [2022-11-19 07:36:52,397 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_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i[513617,513630] [2022-11-19 07:36:52,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:36:52,749 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:36:52,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52 WrapperNode [2022-11-19 07:36:52,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:36:52,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:36:52,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:36:52,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:36:52,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:52,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,373 INFO L138 Inliner]: procedures = 619, calls = 4114, calls flagged for inlining = 350, calls inlined = 330, statements flattened = 10113 [2022-11-19 07:36:53,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:36:53,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:36:53,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:36:53,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:36:53,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:53,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:36:53,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:36:53,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:36:53,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:36:54,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (1/1) ... [2022-11-19 07:36:54,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:36:54,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:54,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:36:54,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:36:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-19 07:36:54,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-19 07:36:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:36:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:36:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:36:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:36:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-19 07:36:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-19 07:36:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_irq [2022-11-19 07:36:54,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_irq [2022-11-19 07:36:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_rx_resources [2022-11-19 07:36:54,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_rx_resources [2022-11-19 07:36:54,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:36:54,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:36:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_ctxtdesc [2022-11-19 07:36:54,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_ctxtdesc [2022-11-19 07:36:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure skb_header_pointer [2022-11-19 07:36:54,097 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_header_pointer [2022-11-19 07:36:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-19 07:36:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-19 07:36:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_eitr [2022-11-19 07:36:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_eitr [2022-11-19 07:36:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-19 07:36:54,098 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-19 07:36:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_uc_addr_vf [2022-11-19 07:36:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_uc_addr_vf [2022-11-19 07:36:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-19 07:36:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-19 07:36:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:36:54,099 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:36:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:36:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:36:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-19 07:36:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-19 07:36:54,100 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:36:54,100 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:36:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_desc_unused [2022-11-19 07:36:54,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_desc_unused [2022-11-19 07:36:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2022-11-19 07:36:54,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2022-11-19 07:36:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_tx_resources [2022-11-19 07:36:54,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_tx_resources [2022-11-19 07:36:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_remove [2022-11-19 07:36:54,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_remove [2022-11-19 07:36:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:36:54,102 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:36:54,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:36:54,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:36:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:36:54,103 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:36:54,103 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:36:54,103 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:36:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:36:54,104 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:36:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:36:54,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:36:54,104 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 07:36:54,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 07:36:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:36:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-19 07:36:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-19 07:36:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_resume [2022-11-19 07:36:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_resume [2022-11-19 07:36:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-19 07:36:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-19 07:36:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-19 07:36:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-19 07:36:54,106 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-19 07:36:54,106 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-19 07:36:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_mbx_vf [2022-11-19 07:36:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_mbx_vf [2022-11-19 07:36:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2022-11-19 07:36:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2022-11-19 07:36:54,107 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_mbx_vf [2022-11-19 07:36:54,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_mbx_vf [2022-11-19 07:36:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:36:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:36:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-19 07:36:54,108 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-19 07:36:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:36:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reinit_locked [2022-11-19 07:36:54,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reinit_locked [2022-11-19 07:36:54,109 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up [2022-11-19 07:36:54,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up [2022-11-19 07:36:54,109 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-19 07:36:54,109 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-19 07:36:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:36:54,110 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:36:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:36:54,110 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:36:54,110 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_irq [2022-11-19 07:36:54,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_irq [2022-11-19 07:36:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rar_vf [2022-11-19 07:36:54,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rar_vf [2022-11-19 07:36:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:36:54,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:36:54,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:36:54,112 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2022-11-19 07:36:54,112 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2022-11-19 07:36:54,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:36:54,112 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:36:54,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:36:54,112 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_vfta_vf [2022-11-19 07:36:54,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_vfta_vf [2022-11-19 07:36:54,113 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-19 07:36:54,113 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-19 07:36:54,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:36:54,113 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:36:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_down [2022-11-19 07:36:54,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_down [2022-11-19 07:36:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:36:54,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:36:54,114 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-19 07:36:54,114 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-19 07:36:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:36:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:36:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_txq [2022-11-19 07:36:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_txq [2022-11-19 07:36:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-19 07:36:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-19 07:36:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_rx_resources [2022-11-19 07:36:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_rx_resources [2022-11-19 07:36:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:36:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:36:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 07:36:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 07:36:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_timeout [2022-11-19 07:36:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_timeout [2022-11-19 07:36:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:36:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:36:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-19 07:36:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-19 07:36:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_negotiate_api [2022-11-19 07:36:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_negotiate_api [2022-11-19 07:36:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:36:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:36:54,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:36:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:36:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:36:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-19 07:36:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-19 07:36:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_alloc_rx_buffers [2022-11-19 07:36:54,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_alloc_rx_buffers [2022-11-19 07:36:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-19 07:36:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-19 07:36:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_interrupt_scheme [2022-11-19 07:36:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_interrupt_scheme [2022-11-19 07:36:54,120 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 07:36:54,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 07:36:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:36:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 07:36:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 07:36:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:36:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:36:54,121 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:36:54,121 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:36:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:36:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:36:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_tx_resources [2022-11-19 07:36:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_tx_resources [2022-11-19 07:36:54,122 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2022-11-19 07:36:54,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2022-11-19 07:36:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-19 07:36:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-19 07:36:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_maybe_stop_tx [2022-11-19 07:36:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_maybe_stop_tx [2022-11-19 07:36:54,123 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_msg_vf [2022-11-19 07:36:54,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_msg_vf [2022-11-19 07:36:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-19 07:36:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-19 07:36:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_busy_poll_recv [2022-11-19 07:36:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_busy_poll_recv [2022-11-19 07:36:54,124 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2022-11-19 07:36:54,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2022-11-19 07:36:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-19 07:36:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-19 07:36:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-19 07:36:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-19 07:36:54,125 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-19 07:36:54,125 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-19 07:36:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:36:54,126 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:36:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-19 07:36:54,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-19 07:36:54,126 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_last_counter_stats [2022-11-19 07:36:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_last_counter_stats [2022-11-19 07:36:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_io_resume [2022-11-19 07:36:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_io_resume [2022-11-19 07:36:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:36:54,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:36:54,127 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up_complete [2022-11-19 07:36:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up_complete [2022-11-19 07:36:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-19 07:36:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-19 07:36:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_ivar [2022-11-19 07:36:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_ivar [2022-11-19 07:36:54,128 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_bit_vf [2022-11-19 07:36:54,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_bit_vf [2022-11-19 07:36:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:36:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:36:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-19 07:36:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-19 07:36:54,129 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_shutdown [2022-11-19 07:36:54,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_shutdown [2022-11-19 07:36:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_interrupt_capability [2022-11-19 07:36:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_interrupt_capability [2022-11-19 07:36:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:36:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:36:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-19 07:36:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-19 07:36:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_nway_reset [2022-11-19 07:36:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_nway_reset [2022-11-19 07:36:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-19 07:36:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-19 07:36:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-19 07:36:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-19 07:36:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_tx_ring [2022-11-19 07:36:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_tx_ring [2022-11-19 07:36:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_rst_vf [2022-11-19 07:36:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_rst_vf [2022-11-19 07:36:54,132 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_v2p_mailbox [2022-11-19 07:36:54,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_v2p_mailbox [2022-11-19 07:36:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 07:36:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 07:36:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_ack_vf [2022-11-19 07:36:54,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_ack_vf [2022-11-19 07:36:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:36:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:36:54,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:36:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:36:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_stats [2022-11-19 07:36:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_stats [2022-11-19 07:36:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:36:54,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-19 07:36:54,134 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_irq_enable [2022-11-19 07:36:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_irq_enable [2022-11-19 07:36:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-19 07:36:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-19 07:36:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:36:54,135 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:36:54,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:36:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_start_hw_vf [2022-11-19 07:36:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_start_hw_vf [2022-11-19 07:36:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-19 07:36:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-19 07:36:54,136 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-19 07:36:54,136 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-19 07:36:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure napi_hash_del [2022-11-19 07:36:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_hash_del [2022-11-19 07:36:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:36:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:36:54,137 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-11-19 07:36:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-11-19 07:36:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_all_queues [2022-11-19 07:36:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_all_queues [2022-11-19 07:36:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rx_mode [2022-11-19 07:36:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rx_mode [2022-11-19 07:36:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-19 07:36:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-19 07:36:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 07:36:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 07:36:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:36:54,139 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:36:54,139 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-19 07:36:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-19 07:36:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2022-11-19 07:36:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2022-11-19 07:36:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_suspend [2022-11-19 07:36:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_suspend [2022-11-19 07:36:54,140 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-19 07:36:54,140 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-19 07:36:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 07:36:54,141 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 07:36:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:36:54,141 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:36:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:36:54,141 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:36:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:36:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-19 07:36:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-19 07:36:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:36:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:36:54,142 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_link_test [2022-11-19 07:36:54,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_link_test [2022-11-19 07:36:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:36:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_vlan_rx_add_vid [2022-11-19 07:36:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_vlan_rx_add_vid [2022-11-19 07:36:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_rxq [2022-11-19 07:36:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_rxq [2022-11-19 07:36:54,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-19 07:36:54,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-19 07:36:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-19 07:36:54,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-19 07:36:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-19 07:36:54,144 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-19 07:36:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:36:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_mac_addr_vf [2022-11-19 07:36:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_mac_addr_vf [2022-11-19 07:36:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_configure [2022-11-19 07:36:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_configure [2022-11-19 07:36:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_tx_resources [2022-11-19 07:36:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_tx_resources [2022-11-19 07:36:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 07:36:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 07:36:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 07:36:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 07:36:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_queues [2022-11-19 07:36:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_queues [2022-11-19 07:36:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:36:54,146 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:36:54,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-19 07:36:54,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-19 07:36:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2022-11-19 07:36:54,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2022-11-19 07:36:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:36:54,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:36:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-19 07:36:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-19 07:36:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-19 07:36:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-19 07:36:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 07:36:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 07:36:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 07:36:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 07:36:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_open [2022-11-19 07:36:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_open [2022-11-19 07:36:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-19 07:36:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-19 07:36:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-19 07:36:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-19 07:36:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_mac_link_vf [2022-11-19 07:36:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_mac_link_vf [2022-11-19 07:36:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clear_interrupt_scheme [2022-11-19 07:36:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clear_interrupt_scheme [2022-11-19 07:36:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_regs_len [2022-11-19 07:36:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_regs_len [2022-11-19 07:36:54,150 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 07:36:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 07:36:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 07:36:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 07:36:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:36:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:36:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 07:36:54,151 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 07:36:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2022-11-19 07:36:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2022-11-19 07:36:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_rx_resources [2022-11-19 07:36:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_rx_resources [2022-11-19 07:36:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:36:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:36:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-19 07:36:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-19 07:36:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:36:54,153 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:36:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:36:54,153 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_mbx_params_vf [2022-11-19 07:36:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_mbx_params_vf [2022-11-19 07:36:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-19 07:36:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-19 07:36:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_q_vectors [2022-11-19 07:36:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_q_vectors [2022-11-19 07:36:54,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:36:54,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:36:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_disable_rx_queue [2022-11-19 07:36:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_disable_rx_queue [2022-11-19 07:36:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset [2022-11-19 07:36:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset [2022-11-19 07:36:54,155 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_close [2022-11-19 07:36:54,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_close [2022-11-19 07:36:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 07:36:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-19 07:36:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-19 07:36:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-19 07:36:54,156 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-19 07:36:54,156 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-19 07:36:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:36:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:36:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-19 07:36:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-19 07:36:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-19 07:36:54,157 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-19 07:36:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-19 07:36:54,158 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-19 07:36:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-19 07:36:54,158 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-19 07:36:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-19 07:36:54,158 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-19 07:36:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-19 07:36:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-19 07:36:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:36:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:36:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-19 07:36:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-19 07:36:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:36:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-19 07:36:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_ring [2022-11-19 07:36:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_ring [2022-11-19 07:36:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_stop_hw_vf [2022-11-19 07:36:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_stop_hw_vf [2022-11-19 07:36:54,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-19 07:36:54,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-19 07:36:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2022-11-19 07:36:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2022-11-19 07:36:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 07:36:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 07:36:54,161 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-19 07:36:54,161 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-19 07:36:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-19 07:36:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-19 07:36:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:36:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-19 07:36:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-19 07:36:54,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:36:54,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:36:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2022-11-19 07:36:54,163 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2022-11-19 07:36:55,808 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:36:55,823 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:36:56,047 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:41:21,593 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:41:21,756 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:41:27,240 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:41:27,241 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-19 07:41:27,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:27 BoogieIcfgContainer [2022-11-19 07:41:27,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:41:27,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:41:27,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:41:27,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:41:27,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:36:45" (1/3) ... [2022-11-19 07:41:27,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458186f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:27, skipping insertion in model container [2022-11-19 07:41:27,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:36:52" (2/3) ... [2022-11-19 07:41:27,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458186f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:27, skipping insertion in model container [2022-11-19 07:41:27,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:27" (3/3) ... [2022-11-19 07:41:27,270 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-19 07:41:27,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:41:27,289 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:41:27,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:41:27,386 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;@76b961ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:41:27,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:41:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 2721 states, 1638 states have (on average 1.297924297924298) internal successors, (2126), 1681 states have internal predecessors, (2126), 883 states have call successors, (883), 199 states have call predecessors, (883), 198 states have return successors, (876), 872 states have call predecessors, (876), 876 states have call successors, (876) [2022-11-19 07:41:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-19 07:41:27,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:27,450 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:41:27,451 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 07:41:27,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:27,458 INFO L85 PathProgramCache]: Analyzing trace with hash -292463735, now seen corresponding path program 1 times [2022-11-19 07:41:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:27,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694998005] [2022-11-19 07:41:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:27,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-19 07:41:29,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:29,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694998005] [2022-11-19 07:41:29,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694998005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:41:29,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:41:29,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:41:29,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981617171] [2022-11-19 07:41:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:41:29,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:41:29,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:41:29,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:41:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:41:29,919 INFO L87 Difference]: Start difference. First operand has 2721 states, 1638 states have (on average 1.297924297924298) internal successors, (2126), 1681 states have internal predecessors, (2126), 883 states have call successors, (883), 199 states have call predecessors, (883), 198 states have return successors, (876), 872 states have call predecessors, (876), 876 states have call successors, (876) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 07:41:32,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:41:37,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:41:39,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:41:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:45,227 INFO L93 Difference]: Finished difference Result 7968 states and 11375 transitions. [2022-11-19 07:41:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:41:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 310 [2022-11-19 07:41:45,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:45,300 INFO L225 Difference]: With dead ends: 7968 [2022-11-19 07:41:45,301 INFO L226 Difference]: Without dead ends: 5295 [2022-11-19 07:41:45,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:41:45,327 INFO L413 NwaCegarLoop]: 4123 mSDtfsCounter, 3706 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3706 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:45,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3706 Valid, 7385 Invalid, 1184 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1174 Invalid, 3 Unknown, 0 Unchecked, 14.8s Time] [2022-11-19 07:41:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-11-19 07:41:45,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5293. [2022-11-19 07:41:45,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5293 states, 3201 states have (on average 1.29553264604811) internal successors, (4147), 3284 states have internal predecessors, (4147), 1697 states have call successors, (1697), 394 states have call predecessors, (1697), 393 states have return successors, (1694), 1686 states have call predecessors, (1694), 1694 states have call successors, (1694) [2022-11-19 07:41:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7538 transitions. [2022-11-19 07:41:45,938 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7538 transitions. Word has length 310 [2022-11-19 07:41:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:45,944 INFO L495 AbstractCegarLoop]: Abstraction has 5293 states and 7538 transitions. [2022-11-19 07:41:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 07:41:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7538 transitions. [2022-11-19 07:41:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-19 07:41:45,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:45,960 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:41:45,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:41:45,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1683623299, now seen corresponding path program 1 times [2022-11-19 07:41:45,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:45,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732354314] [2022-11-19 07:41:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:45,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-19 07:41:47,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:47,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732354314] [2022-11-19 07:41:47,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732354314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:41:47,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:41:47,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:41:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504831873] [2022-11-19 07:41:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:41:47,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:41:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:41:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:41:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:41:47,461 INFO L87 Difference]: Start difference. First operand 5293 states and 7538 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 07:41:49,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:41:55,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:41:57,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:03,802 INFO L93 Difference]: Finished difference Result 11804 states and 16813 transitions. [2022-11-19 07:42:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:42:03,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 324 [2022-11-19 07:42:03,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:03,849 INFO L225 Difference]: With dead ends: 11804 [2022-11-19 07:42:03,849 INFO L226 Difference]: Without dead ends: 6570 [2022-11-19 07:42:03,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:42:03,873 INFO L413 NwaCegarLoop]: 4188 mSDtfsCounter, 2746 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2746 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:03,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2746 Valid, 7418 Invalid, 1311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1289 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2022-11-19 07:42:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2022-11-19 07:42:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 6563. [2022-11-19 07:42:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6563 states, 4005 states have (on average 1.2948813982521847) internal successors, (5186), 4105 states have internal predecessors, (5186), 2071 states have call successors, (2071), 487 states have call predecessors, (2071), 485 states have return successors, (2068), 2055 states have call predecessors, (2068), 2068 states have call successors, (2068) [2022-11-19 07:42:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6563 states to 6563 states and 9325 transitions. [2022-11-19 07:42:04,266 INFO L78 Accepts]: Start accepts. Automaton has 6563 states and 9325 transitions. Word has length 324 [2022-11-19 07:42:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:04,272 INFO L495 AbstractCegarLoop]: Abstraction has 6563 states and 9325 transitions. [2022-11-19 07:42:04,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-19 07:42:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6563 states and 9325 transitions. [2022-11-19 07:42:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-19 07:42:04,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:04,287 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:42:04,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:42:04,289 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 07:42:04,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 547511646, now seen corresponding path program 1 times [2022-11-19 07:42:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:04,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376532807] [2022-11-19 07:42:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2022-11-19 07:42:06,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:06,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376532807] [2022-11-19 07:42:06,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376532807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:06,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:06,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:42:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241396862] [2022-11-19 07:42:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:06,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:42:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:42:06,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:42:06,782 INFO L87 Difference]: Start difference. First operand 6563 states and 9325 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-19 07:42:08,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:15,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:17,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:24,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:24,791 INFO L93 Difference]: Finished difference Result 11150 states and 15840 transitions. [2022-11-19 07:42:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:42:24,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 352 [2022-11-19 07:42:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:24,854 INFO L225 Difference]: With dead ends: 11150 [2022-11-19 07:42:24,855 INFO L226 Difference]: Without dead ends: 11127 [2022-11-19 07:42:24,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:42:24,863 INFO L413 NwaCegarLoop]: 4146 mSDtfsCounter, 3744 mSDsluCounter, 7334 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 11480 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:24,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3744 Valid, 11480 Invalid, 1748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1745 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time] [2022-11-19 07:42:24,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11127 states. [2022-11-19 07:42:25,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11127 to 11125. [2022-11-19 07:42:25,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 6790 states have (on average 1.2952871870397644) internal successors, (8795), 6956 states have internal predecessors, (8795), 3504 states have call successors, (3504), 831 states have call predecessors, (3504), 829 states have return successors, (3501), 3481 states have call predecessors, (3501), 3501 states have call successors, (3501) [2022-11-19 07:42:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 15800 transitions. [2022-11-19 07:42:25,485 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 15800 transitions. Word has length 352 [2022-11-19 07:42:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:25,487 INFO L495 AbstractCegarLoop]: Abstraction has 11125 states and 15800 transitions. [2022-11-19 07:42:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-19 07:42:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 15800 transitions. [2022-11-19 07:42:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-19 07:42:25,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:25,505 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:42:25,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:42:25,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 582957277, now seen corresponding path program 1 times [2022-11-19 07:42:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:25,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987713720] [2022-11-19 07:42:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:26,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3525 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3522 trivial. 0 not checked. [2022-11-19 07:42:26,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:26,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987713720] [2022-11-19 07:42:26,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987713720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:26,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:26,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:42:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020017379] [2022-11-19 07:42:26,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:26,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:42:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:26,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:42:26,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:42:26,777 INFO L87 Difference]: Start difference. First operand 11125 states and 15800 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-19 07:42:28,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:35,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:38,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:42:44,884 INFO L93 Difference]: Finished difference Result 24179 states and 34357 transitions. [2022-11-19 07:42:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:42:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 371 [2022-11-19 07:42:44,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:42:44,958 INFO L225 Difference]: With dead ends: 24179 [2022-11-19 07:42:44,958 INFO L226 Difference]: Without dead ends: 15016 [2022-11-19 07:42:44,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:42:44,997 INFO L413 NwaCegarLoop]: 5557 mSDtfsCounter, 2740 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 8785 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:42:44,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2740 Valid, 8785 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1664 Invalid, 3 Unknown, 0 Unchecked, 17.5s Time] [2022-11-19 07:42:45,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15016 states. [2022-11-19 07:42:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15016 to 15008. [2022-11-19 07:42:45,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15008 states, 9177 states have (on average 1.2955214122262178) internal successors, (11889), 9400 states have internal predecessors, (11889), 4710 states have call successors, (4710), 1122 states have call predecessors, (4710), 1119 states have return successors, (4707), 4677 states have call predecessors, (4707), 4707 states have call successors, (4707) [2022-11-19 07:42:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15008 states to 15008 states and 21306 transitions. [2022-11-19 07:42:45,760 INFO L78 Accepts]: Start accepts. Automaton has 15008 states and 21306 transitions. Word has length 371 [2022-11-19 07:42:45,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:42:45,761 INFO L495 AbstractCegarLoop]: Abstraction has 15008 states and 21306 transitions. [2022-11-19 07:42:45,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2022-11-19 07:42:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 15008 states and 21306 transitions. [2022-11-19 07:42:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-19 07:42:45,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:42:45,801 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 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, 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] [2022-11-19 07:42:45,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:42:45,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:42:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:42:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1647021436, now seen corresponding path program 1 times [2022-11-19 07:42:45,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:42:45,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008956655] [2022-11-19 07:42:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:42:45,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:42:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:42:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3770 trivial. 0 not checked. [2022-11-19 07:42:48,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:42:48,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008956655] [2022-11-19 07:42:48,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008956655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:42:48,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:42:48,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:42:48,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521005504] [2022-11-19 07:42:48,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:42:48,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:42:48,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:42:48,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:42:48,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:42:48,321 INFO L87 Difference]: Start difference. First operand 15008 states and 21306 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 07:42:50,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:56,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:42:58,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:14,439 INFO L93 Difference]: Finished difference Result 19990 states and 29219 transitions. [2022-11-19 07:43:14,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:43:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 434 [2022-11-19 07:43:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:14,655 INFO L225 Difference]: With dead ends: 19990 [2022-11-19 07:43:14,655 INFO L226 Difference]: Without dead ends: 19988 [2022-11-19 07:43:14,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:43:14,666 INFO L413 NwaCegarLoop]: 6999 mSDtfsCounter, 4931 mSDsluCounter, 9983 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 365 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5299 SdHoareTripleChecker+Valid, 16982 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:14,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5299 Valid, 16982 Invalid, 3336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [365 Valid, 2968 Invalid, 3 Unknown, 0 Unchecked, 25.3s Time] [2022-11-19 07:43:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19988 states. [2022-11-19 07:43:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19988 to 15008. [2022-11-19 07:43:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15008 states, 9177 states have (on average 1.2954124441538628) internal successors, (11888), 9400 states have internal predecessors, (11888), 4710 states have call successors, (4710), 1122 states have call predecessors, (4710), 1119 states have return successors, (4707), 4677 states have call predecessors, (4707), 4707 states have call successors, (4707) [2022-11-19 07:43:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15008 states to 15008 states and 21305 transitions. [2022-11-19 07:43:15,653 INFO L78 Accepts]: Start accepts. Automaton has 15008 states and 21305 transitions. Word has length 434 [2022-11-19 07:43:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:15,655 INFO L495 AbstractCegarLoop]: Abstraction has 15008 states and 21305 transitions. [2022-11-19 07:43:15,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (45), 1 states have call predecessors, (45), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-19 07:43:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 15008 states and 21305 transitions. [2022-11-19 07:43:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-19 07:43:15,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:15,692 INFO L195 NwaCegarLoop]: trace histogram [33, 31, 31, 31, 31, 31, 31, 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] [2022-11-19 07:43:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:43:15,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash -233786836, now seen corresponding path program 1 times [2022-11-19 07:43:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:15,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87698836] [2022-11-19 07:43:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3854 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3851 trivial. 0 not checked. [2022-11-19 07:43:16,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:16,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87698836] [2022-11-19 07:43:16,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87698836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:16,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:16,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457726874] [2022-11-19 07:43:16,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:16,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:16,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:16,848 INFO L87 Difference]: Start difference. First operand 15008 states and 21305 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-19 07:43:18,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:28,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:30,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:32,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:32,471 INFO L93 Difference]: Finished difference Result 34853 states and 49287 transitions. [2022-11-19 07:43:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:32,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 429 [2022-11-19 07:43:32,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:32,565 INFO L225 Difference]: With dead ends: 34853 [2022-11-19 07:43:32,565 INFO L226 Difference]: Without dead ends: 19904 [2022-11-19 07:43:32,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:32,617 INFO L413 NwaCegarLoop]: 3915 mSDtfsCounter, 2718 mSDsluCounter, 3230 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:32,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 7145 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1206 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2022-11-19 07:43:32,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19904 states. [2022-11-19 07:43:33,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19904 to 19891. [2022-11-19 07:43:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19891 states, 12184 states have (on average 1.2935817465528563) internal successors, (15761), 12470 states have internal predecessors, (15761), 6132 states have call successors, (6132), 1578 states have call predecessors, (6132), 1573 states have return successors, (6131), 6074 states have call predecessors, (6131), 6129 states have call successors, (6131) [2022-11-19 07:43:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19891 states to 19891 states and 28024 transitions. [2022-11-19 07:43:33,651 INFO L78 Accepts]: Start accepts. Automaton has 19891 states and 28024 transitions. Word has length 429 [2022-11-19 07:43:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:33,652 INFO L495 AbstractCegarLoop]: Abstraction has 19891 states and 28024 transitions. [2022-11-19 07:43:33,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-19 07:43:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19891 states and 28024 transitions. [2022-11-19 07:43:33,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2022-11-19 07:43:33,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:33,733 INFO L195 NwaCegarLoop]: trace histogram [45, 33, 33, 33, 33, 33, 33, 18, 18, 10, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:33,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:43:33,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash 688616638, now seen corresponding path program 1 times [2022-11-19 07:43:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:33,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129136245] [2022-11-19 07:43:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:33,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:34,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:43:34,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370192214] [2022-11-19 07:43:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:34,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:34,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:43:34,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:43:34,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:43:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:38,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 10461 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:43:38,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:43:39,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5847 backedges. 1009 proven. 0 refuted. 0 times theorem prover too weak. 4838 trivial. 0 not checked. [2022-11-19 07:43:39,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:43:39,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129136245] [2022-11-19 07:43:39,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:43:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370192214] [2022-11-19 07:43:39,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370192214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:39,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:39,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746994976] [2022-11-19 07:43:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:39,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:39,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:39,738 INFO L87 Difference]: Start difference. First operand 19891 states and 28024 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 3 states have call successors, (117), 3 states have call predecessors, (117), 3 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2022-11-19 07:43:41,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:53,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:55,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:57,586 INFO L93 Difference]: Finished difference Result 45594 states and 64220 transitions. [2022-11-19 07:43:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 3 states have call successors, (117), 3 states have call predecessors, (117), 3 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 875 [2022-11-19 07:43:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:57,695 INFO L225 Difference]: With dead ends: 45594 [2022-11-19 07:43:57,696 INFO L226 Difference]: Without dead ends: 26305 [2022-11-19 07:43:57,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 873 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:57,759 INFO L413 NwaCegarLoop]: 5562 mSDtfsCounter, 2736 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 55 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2736 SdHoareTripleChecker+Valid, 8756 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:57,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2736 Valid, 8756 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1568 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2022-11-19 07:43:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26305 states. [2022-11-19 07:43:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26305 to 26292. [2022-11-19 07:43:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26292 states, 16166 states have (on average 1.2910429296053445) internal successors, (20871), 16539 states have internal predecessors, (20871), 7998 states have call successors, (7998), 2133 states have call predecessors, (7998), 2126 states have return successors, (7999), 7913 states have call predecessors, (7999), 7995 states have call successors, (7999) [2022-11-19 07:43:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26292 states to 26292 states and 36868 transitions. [2022-11-19 07:43:59,375 INFO L78 Accepts]: Start accepts. Automaton has 26292 states and 36868 transitions. Word has length 875 [2022-11-19 07:43:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:59,376 INFO L495 AbstractCegarLoop]: Abstraction has 26292 states and 36868 transitions. [2022-11-19 07:43:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 3 states have call successors, (117), 3 states have call predecessors, (117), 3 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2022-11-19 07:43:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 26292 states and 36868 transitions. [2022-11-19 07:43:59,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2022-11-19 07:43:59,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:59,460 INFO L195 NwaCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:43:59,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:43:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:43:59,686 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:43:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:59,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1203200009, now seen corresponding path program 1 times [2022-11-19 07:43:59,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:59,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165528480] [2022-11-19 07:43:59,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:59,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:00,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:44:00,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310444205] [2022-11-19 07:44:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:44:00,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:44:00,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:44:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:05,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 10523 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:44:05,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:44:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6056 backedges. 1200 proven. 0 refuted. 0 times theorem prover too weak. 4856 trivial. 0 not checked. [2022-11-19 07:44:06,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:44:06,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:06,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165528480] [2022-11-19 07:44:06,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:44:06,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310444205] [2022-11-19 07:44:06,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310444205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:06,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:06,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:44:06,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892284613] [2022-11-19 07:44:06,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:06,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:44:06,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:44:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:44:06,040 INFO L87 Difference]: Start difference. First operand 26292 states and 36868 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 3 states have call successors, (119), 3 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2022-11-19 07:44:08,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:16,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:18,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:20,742 INFO L93 Difference]: Finished difference Result 61874 states and 86386 transitions. [2022-11-19 07:44:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:44:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 3 states have call successors, (119), 3 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 896 [2022-11-19 07:44:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:20,901 INFO L225 Difference]: With dead ends: 61874 [2022-11-19 07:44:20,901 INFO L226 Difference]: Without dead ends: 36184 [2022-11-19 07:44:20,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:44:20,988 INFO L413 NwaCegarLoop]: 3905 mSDtfsCounter, 3628 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3628 SdHoareTripleChecker+Valid, 6431 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:20,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3628 Valid, 6431 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1098 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-19 07:44:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36184 states. [2022-11-19 07:44:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36184 to 36169. [2022-11-19 07:44:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36169 states, 22280 states have (on average 1.2885547576301615) internal successors, (28709), 22789 states have internal predecessors, (28709), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3080 states have return successors, (10810), 10690 states have call predecessors, (10810), 10804 states have call successors, (10810) [2022-11-19 07:44:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36169 states to 36169 states and 50326 transitions. [2022-11-19 07:44:22,952 INFO L78 Accepts]: Start accepts. Automaton has 36169 states and 50326 transitions. Word has length 896 [2022-11-19 07:44:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:22,954 INFO L495 AbstractCegarLoop]: Abstraction has 36169 states and 50326 transitions. [2022-11-19 07:44:22,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 3 states have call successors, (119), 3 states have call predecessors, (119), 3 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2022-11-19 07:44:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36169 states and 50326 transitions. [2022-11-19 07:44:23,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-11-19 07:44:23,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:23,031 INFO L195 NwaCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:44:23,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:44:23,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:23,260 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:44:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash 550224872, now seen corresponding path program 1 times [2022-11-19 07:44:23,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:23,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821704500] [2022-11-19 07:44:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:23,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:24,256 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:44:24,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418899118] [2022-11-19 07:44:24,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:24,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:24,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:44:24,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:44:24,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:44:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:29,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 10525 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:44:29,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:44:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1383 proven. 0 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2022-11-19 07:44:29,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:44:29,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:29,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821704500] [2022-11-19 07:44:29,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:44:29,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418899118] [2022-11-19 07:44:29,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418899118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:29,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:29,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:44:29,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323018783] [2022-11-19 07:44:29,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:29,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:44:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:29,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:44:29,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:44:29,725 INFO L87 Difference]: Start difference. First operand 36169 states and 50326 transitions. Second operand has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 6 states have internal predecessors, (299), 2 states have call successors, (118), 2 states have call predecessors, (118), 3 states have return successors, (117), 3 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-19 07:44:31,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:54,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:56,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:02,771 INFO L93 Difference]: Finished difference Result 81715 states and 115483 transitions. [2022-11-19 07:45:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:45:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 6 states have internal predecessors, (299), 2 states have call successors, (118), 2 states have call predecessors, (118), 3 states have return successors, (117), 3 states have call predecessors, (117), 2 states have call successors, (117) Word has length 898 [2022-11-19 07:45:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:02,986 INFO L225 Difference]: With dead ends: 81715 [2022-11-19 07:45:02,987 INFO L226 Difference]: Without dead ends: 46148 [2022-11-19 07:45:03,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 892 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:45:03,320 INFO L413 NwaCegarLoop]: 4476 mSDtfsCounter, 761 mSDsluCounter, 21476 mSDsCounter, 0 mSdLazyCounter, 4522 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 25952 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4522 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:03,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 25952 Invalid, 4527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4522 Invalid, 3 Unknown, 0 Unchecked, 31.0s Time] [2022-11-19 07:45:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46148 states. [2022-11-19 07:45:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46148 to 36225. [2022-11-19 07:45:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36225 states, 22328 states have (on average 1.287934432103189) internal successors, (28757), 22837 states have internal predecessors, (28757), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3088 states have return successors, (10826), 10698 states have call predecessors, (10826), 10804 states have call successors, (10826) [2022-11-19 07:45:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36225 states to 36225 states and 50390 transitions. [2022-11-19 07:45:05,538 INFO L78 Accepts]: Start accepts. Automaton has 36225 states and 50390 transitions. Word has length 898 [2022-11-19 07:45:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:05,539 INFO L495 AbstractCegarLoop]: Abstraction has 36225 states and 50390 transitions. [2022-11-19 07:45:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 42.714285714285715) internal successors, (299), 6 states have internal predecessors, (299), 2 states have call successors, (118), 2 states have call predecessors, (118), 3 states have return successors, (117), 3 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-19 07:45:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 36225 states and 50390 transitions. [2022-11-19 07:45:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2022-11-19 07:45:05,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:05,611 INFO L195 NwaCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:05,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-19 07:45:05,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:45:05,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:05,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:05,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1846388294, now seen corresponding path program 1 times [2022-11-19 07:45:05,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:05,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562293087] [2022-11-19 07:45:05,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:05,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:06,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:45:06,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155923160] [2022-11-19 07:45:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:45:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:45:06,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:45:06,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:45:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:12,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 10566 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:45:12,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1383 proven. 0 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2022-11-19 07:45:12,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:45:12,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:12,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562293087] [2022-11-19 07:45:12,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:45:12,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155923160] [2022-11-19 07:45:12,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155923160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:12,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:12,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:45:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256472516] [2022-11-19 07:45:12,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:45:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:45:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:45:12,432 INFO L87 Difference]: Start difference. First operand 36225 states and 50390 transitions. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-19 07:45:14,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:27,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:29,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:31,002 INFO L93 Difference]: Finished difference Result 72192 states and 100525 transitions. [2022-11-19 07:45:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:45:31,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 905 [2022-11-19 07:45:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:31,137 INFO L225 Difference]: With dead ends: 72192 [2022-11-19 07:45:31,137 INFO L226 Difference]: Without dead ends: 36569 [2022-11-19 07:45:31,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:31,210 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 83 mSDsluCounter, 6571 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 24 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 9905 SdHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:31,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 9905 Invalid, 1773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1746 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2022-11-19 07:45:31,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36569 states. [2022-11-19 07:45:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36569 to 36241. [2022-11-19 07:45:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36241 states, 22344 states have (on average 1.2877282491944146) internal successors, (28773), 22853 states have internal predecessors, (28773), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3088 states have return successors, (10826), 10698 states have call predecessors, (10826), 10804 states have call successors, (10826) [2022-11-19 07:45:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36241 states to 36241 states and 50406 transitions. [2022-11-19 07:45:33,005 INFO L78 Accepts]: Start accepts. Automaton has 36241 states and 50406 transitions. Word has length 905 [2022-11-19 07:45:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:33,006 INFO L495 AbstractCegarLoop]: Abstraction has 36241 states and 50406 transitions. [2022-11-19 07:45:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-19 07:45:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 36241 states and 50406 transitions. [2022-11-19 07:45:33,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2022-11-19 07:45:33,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:33,086 INFO L195 NwaCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:33,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:45:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:45:33,312 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:45:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1717996290, now seen corresponding path program 1 times [2022-11-19 07:45:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:33,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312462217] [2022-11-19 07:45:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:34,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:45:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541863197] [2022-11-19 07:45:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:34,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:45:34,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:45:34,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:45:34,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:45:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:40,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 10591 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:45:40,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:45:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6058 backedges. 1383 proven. 0 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2022-11-19 07:45:40,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:45:40,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:40,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312462217] [2022-11-19 07:45:40,247 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:45:40,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541863197] [2022-11-19 07:45:40,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541863197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:40,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:40,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:45:40,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322416055] [2022-11-19 07:45:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:40,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:45:40,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:45:40,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:45:40,250 INFO L87 Difference]: Start difference. First operand 36241 states and 50406 transitions. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-19 07:45:42,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:56,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:58,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:00,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:00,356 INFO L93 Difference]: Finished difference Result 72240 states and 100581 transitions. [2022-11-19 07:46:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:46:00,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) Word has length 906 [2022-11-19 07:46:00,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:00,500 INFO L225 Difference]: With dead ends: 72240 [2022-11-19 07:46:00,500 INFO L226 Difference]: Without dead ends: 36601 [2022-11-19 07:46:00,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:00,606 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 87 mSDsluCounter, 6574 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 24 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 9908 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:00,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 9908 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1744 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2022-11-19 07:46:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36601 states. [2022-11-19 07:46:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36601 to 36257. [2022-11-19 07:46:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36257 states, 22360 states have (on average 1.2878801431127012) internal successors, (28797), 22869 states have internal predecessors, (28797), 10807 states have call successors, (10807), 3089 states have call predecessors, (10807), 3088 states have return successors, (10826), 10698 states have call predecessors, (10826), 10804 states have call successors, (10826) [2022-11-19 07:46:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36257 states to 36257 states and 50430 transitions. [2022-11-19 07:46:02,192 INFO L78 Accepts]: Start accepts. Automaton has 36257 states and 50430 transitions. Word has length 906 [2022-11-19 07:46:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:02,192 INFO L495 AbstractCegarLoop]: Abstraction has 36257 states and 50430 transitions. [2022-11-19 07:46:02,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 2 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (117), 2 states have call predecessors, (117), 2 states have call successors, (117) [2022-11-19 07:46:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 36257 states and 50430 transitions. [2022-11-19 07:46:02,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2022-11-19 07:46:02,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:02,441 INFO L195 NwaCegarLoop]: trace histogram [47, 33, 33, 33, 33, 33, 33, 18, 18, 10, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:46:02,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:46:02,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:02,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:46:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1003017480, now seen corresponding path program 1 times [2022-11-19 07:46:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:02,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357915332] [2022-11-19 07:46:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:02,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:03,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:46:03,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495201350] [2022-11-19 07:46:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:03,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:46:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:46:03,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:46:03,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f555cc4-72e1-47a4-a15d-4ef3e5b6ea5c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:46:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:09,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 10602 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:46:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:46:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6059 backedges. 1383 proven. 1 refuted. 0 times theorem prover too weak. 4675 trivial. 0 not checked. [2022-11-19 07:46:09,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:46:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6059 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 6012 trivial. 0 not checked. [2022-11-19 07:46:10,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357915332] [2022-11-19 07:46:10,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:46:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495201350] [2022-11-19 07:46:10,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495201350] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:46:10,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1346987500] [2022-11-19 07:46:10,586 INFO L159 IcfgInterpreter]: Started Sifa with 434 locations of interest [2022-11-19 07:46:10,586 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:46:10,593 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:46:10,598 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:46:10,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs