./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 5e519f3a 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_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/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_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 02:23:24,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:23:24,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:23:25,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:23:25,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:23:25,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:23:25,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:23:25,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:23:25,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:23:25,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:23:25,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:23:25,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:23:25,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:23:25,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:23:25,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:23:25,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:23:25,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:23:25,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:23:25,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:23:25,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:23:25,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:23:25,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:23:25,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:23:25,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:23:25,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:23:25,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:23:25,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:23:25,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:23:25,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:23:25,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:23:25,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:23:25,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:23:25,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:23:25,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:23:25,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:23:25,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:23:25,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:23:25,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:23:25,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:23:25,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:23:25,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:23:25,107 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:23:25,141 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:23:25,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:23:25,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:23:25,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:23:25,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:23:25,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:23:25,148 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:23:25,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:23:25,148 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:23:25,148 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:23:25,149 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:23:25,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:23:25,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:23:25,150 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:23:25,150 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:23:25,151 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:23:25,151 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:23:25,151 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:23:25,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:23:25,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:23:25,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:23:25,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:23:25,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:23:25,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:23:25,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:23:25,155 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:23:25,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:23:25,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:23:25,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:23:25,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:25,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:23:25,157 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:23:25,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:23:25,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:23:25,158 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:23:25,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:23:25,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:23:25,159 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:23:25,159 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_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 807baa6191d907795e80ff5436f6f636b6dbcf7109bdc782ca0ac1b857ff64f7 [2022-11-03 02:23:25,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:23:25,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:23:25,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:23:25,465 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:23:25,466 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:23:25,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-03 02:23:25,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/data/1065149e9/590fe277658d4d329d4b4f814fc7f792/FLAGfce01cebc [2022-11-03 02:23:26,785 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:23:26,786 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-03 02:23:26,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/data/1065149e9/590fe277658d4d329d4b4f814fc7f792/FLAGfce01cebc [2022-11-03 02:23:26,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/data/1065149e9/590fe277658d4d329d4b4f814fc7f792 [2022-11-03 02:23:26,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:23:26,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:23:26,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:26,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:23:26,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:23:26,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:26" (1/1) ... [2022-11-03 02:23:26,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750264ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:26, skipping insertion in model container [2022-11-03 02:23:26,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:26" (1/1) ... [2022-11-03 02:23:26,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:23:27,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:32,031 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:32,189 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:32,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/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] [2022-11-03 02:23:32,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:33,227 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:33,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33 WrapperNode [2022-11-03 02:23:33,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:33,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:33,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:33,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:33,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:33,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:33,765 INFO L138 Inliner]: procedures = 619, calls = 4098, calls flagged for inlining = 350, calls inlined = 330, statements flattened = 9859 [2022-11-03 02:23:33,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:33,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:33,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:33,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:33,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:33,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:33,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:33,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:34,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:34,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:34,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:34,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:34,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:34,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:34,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:34,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:34,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (1/1) ... [2022-11-03 02:23:34,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:34,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:34,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:34,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2022-11-03 02:23:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2022-11-03 02:23:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:23:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:23:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:23:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:23:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2022-11-03 02:23:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2022-11-03 02:23:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_irq [2022-11-03 02:23:34,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_irq [2022-11-03 02:23:34,477 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_rx_resources [2022-11-03 02:23:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_rx_resources [2022-11-03 02:23:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:23:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:23:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_ctxtdesc [2022-11-03 02:23:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_ctxtdesc [2022-11-03 02:23:34,478 INFO L130 BoogieDeclarations]: Found specification of procedure skb_header_pointer [2022-11-03 02:23:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_header_pointer [2022-11-03 02:23:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:23:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:23:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_eitr [2022-11-03 02:23:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_eitr [2022-11-03 02:23:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2022-11-03 02:23:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2022-11-03 02:23:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_uc_addr_vf [2022-11-03 02:23:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_uc_addr_vf [2022-11-03 02:23:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2022-11-03 02:23:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2022-11-03 02:23:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:23:34,481 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:23:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:23:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:23:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-03 02:23:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~bool~0~TO~~s32~0 [2022-11-03 02:23:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:23:34,482 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:23:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_desc_unused [2022-11-03 02:23:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_desc_unused [2022-11-03 02:23:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_ack [2022-11-03 02:23:34,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_ack [2022-11-03 02:23:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_setup_tx_resources [2022-11-03 02:23:34,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_setup_tx_resources [2022-11-03 02:23:34,484 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_remove [2022-11-03 02:23:34,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_remove [2022-11-03 02:23:34,485 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:23:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:23:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:23:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:23:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:23:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:23:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:23:34,487 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:23:34,487 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:23:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:23:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:23:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:23:34,488 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 02:23:34,488 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 02:23:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:23:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 02:23:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 02:23:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_resume [2022-11-03 02:23:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_resume [2022-11-03 02:23:34,489 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2022-11-03 02:23:34,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2022-11-03 02:23:34,490 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-03 02:23:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-03 02:23:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:23:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:23:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_mbx_vf [2022-11-03 02:23:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_mbx_vf [2022-11-03 02:23:34,491 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_posted_mbx [2022-11-03 02:23:34,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_posted_mbx [2022-11-03 02:23:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_mbx_vf [2022-11-03 02:23:34,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_mbx_vf [2022-11-03 02:23:34,492 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:23:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:23:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-03 02:23:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-03 02:23:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:23:34,493 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reinit_locked [2022-11-03 02:23:34,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reinit_locked [2022-11-03 02:23:34,494 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up [2022-11-03 02:23:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up [2022-11-03 02:23:34,495 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2022-11-03 02:23:34,495 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2022-11-03 02:23:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:23:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:23:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:23:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:23:34,496 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_irq [2022-11-03 02:23:34,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_irq [2022-11-03 02:23:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rar_vf [2022-11-03 02:23:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rar_vf [2022-11-03 02:23:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:23:34,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:23:34,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:23:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header_len [2022-11-03 02:23:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header_len [2022-11-03 02:23:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:23:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:23:34,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:23:34,498 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_vfta_vf [2022-11-03 02:23:34,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_vfta_vf [2022-11-03 02:23:34,500 INFO L130 BoogieDeclarations]: Found specification of procedure vzalloc [2022-11-03 02:23:34,502 INFO L138 BoogieDeclarations]: Found implementation of procedure vzalloc [2022-11-03 02:23:34,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:23:34,504 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:23:34,504 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_down [2022-11-03 02:23:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_down [2022-11-03 02:23:34,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:23:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:23:34,506 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2022-11-03 02:23:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2022-11-03 02:23:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:23:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:23:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_txq [2022-11-03 02:23:34,512 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_txq [2022-11-03 02:23:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2022-11-03 02:23:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2022-11-03 02:23:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_rx_resources [2022-11-03 02:23:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_rx_resources [2022-11-03 02:23:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:23:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:23:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-03 02:23:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-03 02:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_tx_timeout [2022-11-03 02:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_tx_timeout [2022-11-03 02:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-11-03 02:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-11-03 02:23:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_negotiate_api [2022-11-03 02:23:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_negotiate_api [2022-11-03 02:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 02:23:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 02:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:23:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:23:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:23:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:23:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_alloc_rx_buffers [2022-11-03 02:23:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_alloc_rx_buffers [2022-11-03 02:23:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:23:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:23:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_interrupt_scheme [2022-11-03 02:23:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_interrupt_scheme [2022-11-03 02:23:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 02:23:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 02:23:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:23:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-03 02:23:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-03 02:23:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:23:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:23:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:23:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:23:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:23:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:23:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_tx_resources [2022-11-03 02:23:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_tx_resources [2022-11-03 02:23:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_hw_vf [2022-11-03 02:23:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_hw_vf [2022-11-03 02:23:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2022-11-03 02:23:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2022-11-03 02:23:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_maybe_stop_tx [2022-11-03 02:23:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_maybe_stop_tx [2022-11-03 02:23:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_msg_vf [2022-11-03 02:23:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_msg_vf [2022-11-03 02:23:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:23:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:23:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_busy_poll_recv [2022-11-03 02:23:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_busy_poll_recv [2022-11-03 02:23:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_posted_mbx [2022-11-03 02:23:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_posted_mbx [2022-11-03 02:23:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-03 02:23:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~TO~~s32~0 [2022-11-03 02:23:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 02:23:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 02:23:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2022-11-03 02:23:34,522 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2022-11-03 02:23:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:23:34,523 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:23:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-03 02:23:34,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~~s32~0 [2022-11-03 02:23:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_last_counter_stats [2022-11-03 02:23:34,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_last_counter_stats [2022-11-03 02:23:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_io_resume [2022-11-03 02:23:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_io_resume [2022-11-03 02:23:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:23:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:23:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_up_complete [2022-11-03 02:23:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_up_complete [2022-11-03 02:23:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_begin_bh [2022-11-03 02:23:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_begin_bh [2022-11-03 02:23:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_ivar [2022-11-03 02:23:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_ivar [2022-11-03 02:23:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_bit_vf [2022-11-03 02:23:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_bit_vf [2022-11-03 02:23:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:23:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:23:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:23:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:23:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_shutdown [2022-11-03 02:23:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_shutdown [2022-11-03 02:23:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_interrupt_capability [2022-11-03 02:23:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_interrupt_capability [2022-11-03 02:23:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-03 02:23:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-03 02:23:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_nway_reset [2022-11-03 02:23:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_nway_reset [2022-11-03 02:23:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2022-11-03 02:23:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2022-11-03 02:23:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-03 02:23:34,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_obtain_mbx_lock_vf [2022-11-03 02:23:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_tx_ring [2022-11-03 02:23:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_tx_ring [2022-11-03 02:23:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_rst_vf [2022-11-03 02:23:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_rst_vf [2022-11-03 02:23:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_read_v2p_mailbox [2022-11-03 02:23:34,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_read_v2p_mailbox [2022-11-03 02:23:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-03 02:23:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-03 02:23:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_for_ack_vf [2022-11-03 02:23:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_for_ack_vf [2022-11-03 02:23:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:23:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:23:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:23:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:23:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_stats [2022-11-03 02:23:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_stats [2022-11-03 02:23:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:23:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2022-11-03 02:23:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_irq_enable [2022-11-03 02:23:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_irq_enable [2022-11-03 02:23:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-03 02:23:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-03 02:23:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:23:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:23:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 02:23:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_start_hw_vf [2022-11-03 02:23:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_start_hw_vf [2022-11-03 02:23:34,537 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-03 02:23:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-03 02:23:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2022-11-03 02:23:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2022-11-03 02:23:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure napi_hash_del [2022-11-03 02:23:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_hash_del [2022-11-03 02:23:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:23:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:23:34,538 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_update_begin [2022-11-03 02:23:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_update_begin [2022-11-03 02:23:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_all_queues [2022-11-03 02:23:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_all_queues [2022-11-03 02:23:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_set_rx_mode [2022-11-03 02:23:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_set_rx_mode [2022-11-03 02:23:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2022-11-03 02:23:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2022-11-03 02:23:34,539 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 02:23:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 02:23:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:23:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:23:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-03 02:23:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~$Pointer$~X~~u32~0~TO~~s32~0 [2022-11-03 02:23:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_poll_for_msg [2022-11-03 02:23:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_poll_for_msg [2022-11-03 02:23:34,540 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_suspend [2022-11-03 02:23:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_suspend [2022-11-03 02:23:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2022-11-03 02:23:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2022-11-03 02:23:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 02:23:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 02:23:34,541 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:23:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:23:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:23:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:23:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:23:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-03 02:23:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-03 02:23:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:23:34,542 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:23:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_link_test [2022-11-03 02:23:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_link_test [2022-11-03 02:23:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:23:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_vlan_rx_add_vid [2022-11-03 02:23:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_vlan_rx_add_vid [2022-11-03 02:23:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure map_vector_to_rxq [2022-11-03 02:23:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure map_vector_to_rxq [2022-11-03 02:23:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-03 02:23:34,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~~bool~0~TO~~s32~0 [2022-11-03 02:23:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-03 02:23:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2022-11-03 02:23:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-03 02:23:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-03 02:23:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:23:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_mac_addr_vf [2022-11-03 02:23:34,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_mac_addr_vf [2022-11-03 02:23:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_configure [2022-11-03 02:23:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_configure [2022-11-03 02:23:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_all_tx_resources [2022-11-03 02:23:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_all_tx_resources [2022-11-03 02:23:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:23:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:23:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 02:23:34,545 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 02:23:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_queues [2022-11-03 02:23:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_queues [2022-11-03 02:23:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:23:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:23:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-11-03 02:23:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-11-03 02:23:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_write_msg_read_ack [2022-11-03 02:23:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_write_msg_read_ack [2022-11-03 02:23:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:23:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:23:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 02:23:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 02:23:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:23:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:23:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 02:23:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 02:23:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:23:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:23:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_open [2022-11-03 02:23:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_open [2022-11-03 02:23:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-03 02:23:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2022-11-03 02:23:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-03 02:23:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ixgbevf_exit_module_17_2 [2022-11-03 02:23:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_check_mac_link_vf [2022-11-03 02:23:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_check_mac_link_vf [2022-11-03 02:23:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clear_interrupt_scheme [2022-11-03 02:23:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clear_interrupt_scheme [2022-11-03 02:23:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_get_regs_len [2022-11-03 02:23:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_get_regs_len [2022-11-03 02:23:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:23:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:23:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:23:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:23:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:23:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:23:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-03 02:23:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-03 02:23:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_update_mc_addr_list_vf [2022-11-03 02:23:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_update_mc_addr_list_vf [2022-11-03 02:23:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_rx_resources [2022-11-03 02:23:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_rx_resources [2022-11-03 02:23:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:23:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:23:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2022-11-03 02:23:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2022-11-03 02:23:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:23:34,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:23:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:23:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_init_mbx_params_vf [2022-11-03 02:23:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_init_mbx_params_vf [2022-11-03 02:23:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 02:23:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 02:23:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_free_q_vectors [2022-11-03 02:23:34,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_free_q_vectors [2022-11-03 02:23:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:23:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:23:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_disable_rx_queue [2022-11-03 02:23:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_disable_rx_queue [2022-11-03 02:23:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset [2022-11-03 02:23:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset [2022-11-03 02:23:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_close [2022-11-03 02:23:34,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_close [2022-11-03 02:23:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-03 02:23:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2022-11-03 02:23:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2022-11-03 02:23:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2022-11-03 02:23:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure u64_stats_fetch_retry_bh [2022-11-03 02:23:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure u64_stats_fetch_retry_bh [2022-11-03 02:23:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:23:34,554 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:23:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-03 02:23:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-03 02:23:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:23:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:23:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2022-11-03 02:23:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2022-11-03 02:23:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdrlen [2022-11-03 02:23:34,555 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdrlen [2022-11-03 02:23:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2022-11-03 02:23:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2022-11-03 02:23:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-03 02:23:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-03 02:23:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:23:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:23:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:23:34,556 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:23:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:23:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2022-11-03 02:23:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_clean_rx_ring [2022-11-03 02:23:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_clean_rx_ring [2022-11-03 02:23:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_stop_hw_vf [2022-11-03 02:23:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_stop_hw_vf [2022-11-03 02:23:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2022-11-03 02:23:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2022-11-03 02:23:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_reset_hw_vf [2022-11-03 02:23:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_reset_hw_vf [2022-11-03 02:23:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 02:23:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 02:23:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:23:34,558 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:23:34,559 INFO L130 BoogieDeclarations]: Found specification of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-03 02:23:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ixgbevf_unmap_and_free_tx_resource [2022-11-03 02:23:34,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:23:34,559 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2022-11-03 02:23:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2022-11-03 02:23:34,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:23:34,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:23:34,559 INFO L130 BoogieDeclarations]: Found specification of procedure netpoll_trap [2022-11-03 02:23:34,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netpoll_trap [2022-11-03 02:23:35,980 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:35,989 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:36,200 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:26:48,309 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:26:48,477 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:26:53,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:26:53,343 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-03 02:26:53,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:53 BoogieIcfgContainer [2022-11-03 02:26:53,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:26:53,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:26:53,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:26:53,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:26:53,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:23:26" (1/3) ... [2022-11-03 02:26:53,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4e419e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:53, skipping insertion in model container [2022-11-03 02:26:53,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:33" (2/3) ... [2022-11-03 02:26:53,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4e419e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:26:53, skipping insertion in model container [2022-11-03 02:26:53,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:26:53" (3/3) ... [2022-11-03 02:26:53,362 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-intel-ixgbevf-ixgbevf.cil.i [2022-11-03 02:26:53,382 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:26:53,383 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:26:53,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:26:53,511 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;@17bbcb3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:26:53,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:26:53,525 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) [2022-11-03 02:26:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 02:26:53,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:53,573 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] [2022-11-03 02:26:53,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:53,579 INFO L85 PathProgramCache]: Analyzing trace with hash -707308528, now seen corresponding path program 1 times [2022-11-03 02:26:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:53,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309713830] [2022-11-03 02:26:53,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:53,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:26:56,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:56,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309713830] [2022-11-03 02:26:56,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309713830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:56,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:56,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:56,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811461491] [2022-11-03 02:26:56,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:56,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:56,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:56,137 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) [2022-11-03 02:26:58,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:04,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:06,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:11,237 INFO L93 Difference]: Finished difference Result 7968 states and 11375 transitions. [2022-11-03 02:27:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:11,243 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 [2022-11-03 02:27:11,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:11,304 INFO L225 Difference]: With dead ends: 7968 [2022-11-03 02:27:11,304 INFO L226 Difference]: Without dead ends: 5295 [2022-11-03 02:27:11,328 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 [2022-11-03 02:27:11,332 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 3706 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3706 SdHoareTripleChecker+Valid, 7413 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:11,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3706 Valid, 7413 Invalid, 1156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1146 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2022-11-03 02:27:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-11-03 02:27:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5293. [2022-11-03 02:27:11,724 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) [2022-11-03 02:27:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5293 states to 5293 states and 7538 transitions. [2022-11-03 02:27:11,784 INFO L78 Accepts]: Start accepts. Automaton has 5293 states and 7538 transitions. Word has length 310 [2022-11-03 02:27:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:11,792 INFO L495 AbstractCegarLoop]: Abstraction has 5293 states and 7538 transitions. [2022-11-03 02:27:11,792 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) [2022-11-03 02:27:11,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5293 states and 7538 transitions. [2022-11-03 02:27:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-11-03 02:27:11,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:11,807 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] [2022-11-03 02:27:11,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:27:11,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:11,808 INFO L85 PathProgramCache]: Analyzing trace with hash -691802399, now seen corresponding path program 1 times [2022-11-03 02:27:11,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:11,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949421762] [2022-11-03 02:27:11,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:11,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3306 trivial. 0 not checked. [2022-11-03 02:27:13,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949421762] [2022-11-03 02:27:13,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949421762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:13,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:13,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825807958] [2022-11-03 02:27:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:13,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:13,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:13,366 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) [2022-11-03 02:27:15,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:17,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:25,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:27,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:31,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:31,507 INFO L93 Difference]: Finished difference Result 14384 states and 20487 transitions. [2022-11-03 02:27:31,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:31,507 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 [2022-11-03 02:27:31,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:31,567 INFO L225 Difference]: With dead ends: 14384 [2022-11-03 02:27:31,568 INFO L226 Difference]: Without dead ends: 9150 [2022-11-03 02:27:31,593 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 [2022-11-03 02:27:31,595 INFO L413 NwaCegarLoop]: 4514 mSDtfsCounter, 2745 mSDsluCounter, 3793 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:31,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2745 Valid, 7758 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1301 Invalid, 4 Unknown, 0 Unchecked, 17.7s Time] [2022-11-03 02:27:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9150 states. [2022-11-03 02:27:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9150 to 9141. [2022-11-03 02:27:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9141 states, 5570 states have (on average 1.2958707360861759) internal successors, (7218), 5711 states have internal predecessors, (7218), 2891 states have call successors, (2891), 680 states have call predecessors, (2891), 678 states have return successors, (2888), 2869 states have call predecessors, (2888), 2888 states have call successors, (2888) [2022-11-03 02:27:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9141 states to 9141 states and 12997 transitions. [2022-11-03 02:27:32,371 INFO L78 Accepts]: Start accepts. Automaton has 9141 states and 12997 transitions. Word has length 324 [2022-11-03 02:27:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:32,379 INFO L495 AbstractCegarLoop]: Abstraction has 9141 states and 12997 transitions. [2022-11-03 02:27:32,381 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) [2022-11-03 02:27:32,382 INFO L276 IsEmpty]: Start isEmpty. Operand 9141 states and 12997 transitions. [2022-11-03 02:27:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-11-03 02:27:32,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:32,401 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 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] [2022-11-03 02:27:32,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:27:32,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1340917198, now seen corresponding path program 1 times [2022-11-03 02:27:32,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:32,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390506046] [2022-11-03 02:27:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3372 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3366 trivial. 0 not checked. [2022-11-03 02:27:34,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:34,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390506046] [2022-11-03 02:27:34,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390506046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:34,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:34,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:34,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141617742] [2022-11-03 02:27:34,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:34,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:34,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:34,052 INFO L87 Difference]: Start difference. First operand 9141 states and 12997 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:27:36,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:45,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:47,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:27:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:48,461 INFO L93 Difference]: Finished difference Result 16843 states and 23854 transitions. [2022-11-03 02:27:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:48,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 340 [2022-11-03 02:27:48,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:48,524 INFO L225 Difference]: With dead ends: 16843 [2022-11-03 02:27:48,525 INFO L226 Difference]: Without dead ends: 7761 [2022-11-03 02:27:48,571 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 [2022-11-03 02:27:48,572 INFO L413 NwaCegarLoop]: 3916 mSDtfsCounter, 2720 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 7160 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:48,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2720 Valid, 7160 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1178 Invalid, 3 Unknown, 0 Unchecked, 14.1s Time] [2022-11-03 02:27:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7761 states. [2022-11-03 02:27:49,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7761 to 7750. [2022-11-03 02:27:49,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 4726 states have (on average 1.2926364790520524) internal successors, (6109), 4845 states have internal predecessors, (6109), 2407 states have call successors, (2407), 618 states have call predecessors, (2407), 615 states have return successors, (2405), 2378 states have call predecessors, (2405), 2404 states have call successors, (2405) [2022-11-03 02:27:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 10921 transitions. [2022-11-03 02:27:49,103 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 10921 transitions. Word has length 340 [2022-11-03 02:27:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:49,105 INFO L495 AbstractCegarLoop]: Abstraction has 7750 states and 10921 transitions. [2022-11-03 02:27:49,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2022-11-03 02:27:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 10921 transitions. [2022-11-03 02:27:49,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-03 02:27:49,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:49,118 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] [2022-11-03 02:27:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:27:49,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1611800547, now seen corresponding path program 1 times [2022-11-03 02:27:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:49,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013661965] [2022-11-03 02:27:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:49,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3519 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3519 trivial. 0 not checked. [2022-11-03 02:27:51,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:51,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013661965] [2022-11-03 02:27:51,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013661965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:51,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:51,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:27:51,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351955667] [2022-11-03 02:27:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:51,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:27:51,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:51,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:27:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:27:51,691 INFO L87 Difference]: Start difference. First operand 7750 states and 10921 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) [2022-11-03 02:27:53,823 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 [] [2022-11-03 02:28:01,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:08,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:10,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:12,479 INFO L93 Difference]: Finished difference Result 14884 states and 20979 transitions. [2022-11-03 02:28:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:28:12,480 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 [2022-11-03 02:28:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:12,565 INFO L225 Difference]: With dead ends: 14884 [2022-11-03 02:28:12,565 INFO L226 Difference]: Without dead ends: 14845 [2022-11-03 02:28:12,577 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 [2022-11-03 02:28:12,578 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 3743 mSDsluCounter, 8610 mSDsCounter, 0 mSdLazyCounter, 1750 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3743 SdHoareTripleChecker+Valid, 11714 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1750 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:12,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3743 Valid, 11714 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1750 Invalid, 4 Unknown, 0 Unchecked, 20.2s Time] [2022-11-03 02:28:12,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14845 states. [2022-11-03 02:28:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14845 to 14842. [2022-11-03 02:28:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14842 states, 9049 states have (on average 1.2918554536412863) internal successors, (11690), 9272 states have internal predecessors, (11690), 4608 states have call successors, (4608), 1186 states have call predecessors, (4608), 1183 states have return successors, (4607), 4563 states have call predecessors, (4607), 4605 states have call successors, (4607) [2022-11-03 02:28:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14842 states to 14842 states and 20905 transitions. [2022-11-03 02:28:13,347 INFO L78 Accepts]: Start accepts. Automaton has 14842 states and 20905 transitions. Word has length 352 [2022-11-03 02:28:13,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:13,348 INFO L495 AbstractCegarLoop]: Abstraction has 14842 states and 20905 transitions. [2022-11-03 02:28:13,348 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) [2022-11-03 02:28:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14842 states and 20905 transitions. [2022-11-03 02:28:13,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-03 02:28:13,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:13,363 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] [2022-11-03 02:28:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:28:13,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash 27280044, now seen corresponding path program 1 times [2022-11-03 02:28:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:13,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75510377] [2022-11-03 02:28:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3525 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3522 trivial. 0 not checked. [2022-11-03 02:28:14,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:14,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75510377] [2022-11-03 02:28:14,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75510377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:14,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:14,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:28:14,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274428866] [2022-11-03 02:28:14,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:14,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:28:14,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:14,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:28:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:28:14,686 INFO L87 Difference]: Start difference. First operand 14842 states and 20905 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) [2022-11-03 02:28:16,833 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 [] [2022-11-03 02:28:26,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:30,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:32,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:34,901 INFO L93 Difference]: Finished difference Result 34138 states and 48158 transitions. [2022-11-03 02:28:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:28:34,902 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 [2022-11-03 02:28:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:35,009 INFO L225 Difference]: With dead ends: 34138 [2022-11-03 02:28:35,010 INFO L226 Difference]: Without dead ends: 19898 [2022-11-03 02:28:35,066 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 [2022-11-03 02:28:35,067 INFO L413 NwaCegarLoop]: 5585 mSDtfsCounter, 2739 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 15 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 8827 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:35,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 8827 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1621 Invalid, 4 Unknown, 0 Unchecked, 19.5s Time] [2022-11-03 02:28:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19898 states. [2022-11-03 02:28:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19898 to 19886. [2022-11-03 02:28:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19886 states, 12179 states have (on average 1.2938664915017652) internal successors, (15758), 12470 states have internal predecessors, (15758), 6132 states have call successors, (6132), 1578 states have call predecessors, (6132), 1573 states have return successors, (6131), 6069 states have call predecessors, (6131), 6129 states have call successors, (6131) [2022-11-03 02:28:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19886 states to 19886 states and 28021 transitions. [2022-11-03 02:28:36,405 INFO L78 Accepts]: Start accepts. Automaton has 19886 states and 28021 transitions. Word has length 371 [2022-11-03 02:28:36,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:36,407 INFO L495 AbstractCegarLoop]: Abstraction has 19886 states and 28021 transitions. [2022-11-03 02:28:36,407 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) [2022-11-03 02:28:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 19886 states and 28021 transitions. [2022-11-03 02:28:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-03 02:28:36,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:36,427 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] [2022-11-03 02:28:36,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:28:36,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:36,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1054761777, now seen corresponding path program 1 times [2022-11-03 02:28:36,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:36,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89782839] [2022-11-03 02:28:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:36,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3770 trivial. 0 not checked. [2022-11-03 02:28:38,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:38,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89782839] [2022-11-03 02:28:38,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89782839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:38,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:38,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:28:38,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674214006] [2022-11-03 02:28:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:38,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:28:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:28:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:28:38,821 INFO L87 Difference]: Start difference. First operand 19886 states and 28021 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) [2022-11-03 02:28:40,950 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 [] [2022-11-03 02:28:53,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:28:55,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:02,958 INFO L93 Difference]: Finished difference Result 39766 states and 57867 transitions. [2022-11-03 02:29:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:02,959 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 [2022-11-03 02:29:02,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:03,301 INFO L225 Difference]: With dead ends: 39766 [2022-11-03 02:29:03,301 INFO L226 Difference]: Without dead ends: 39764 [2022-11-03 02:29:03,317 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 [2022-11-03 02:29:03,319 INFO L413 NwaCegarLoop]: 5234 mSDtfsCounter, 5942 mSDsluCounter, 10304 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 459 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6310 SdHoareTripleChecker+Valid, 14199 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:03,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6310 Valid, 14199 Invalid, 2909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [459 Valid, 2447 Invalid, 3 Unknown, 0 Unchecked, 23.0s Time] [2022-11-03 02:29:03,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39764 states. [2022-11-03 02:29:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39764 to 29540. [2022-11-03 02:29:05,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29540 states, 18075 states have (on average 1.2941632088520056) internal successors, (23392), 18518 states have internal predecessors, (23392), 9125 states have call successors, (9125), 2347 states have call predecessors, (9125), 2338 states have return successors, (9125), 9020 states have call predecessors, (9125), 9122 states have call successors, (9125) [2022-11-03 02:29:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29540 states to 29540 states and 41642 transitions. [2022-11-03 02:29:05,386 INFO L78 Accepts]: Start accepts. Automaton has 29540 states and 41642 transitions. Word has length 434 [2022-11-03 02:29:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:05,387 INFO L495 AbstractCegarLoop]: Abstraction has 29540 states and 41642 transitions. [2022-11-03 02:29:05,387 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) [2022-11-03 02:29:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 29540 states and 41642 transitions. [2022-11-03 02:29:05,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2022-11-03 02:29:05,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:05,433 INFO L195 NwaCegarLoop]: trace histogram [43, 31, 31, 31, 31, 31, 31, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:05,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:29:05,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:05,434 INFO L85 PathProgramCache]: Analyzing trace with hash 937552484, now seen corresponding path program 1 times [2022-11-03 02:29:05,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:05,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662171472] [2022-11-03 02:29:05,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:05,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:06,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:06,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851105885] [2022-11-03 02:29:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:06,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:06,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:06,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:06,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:29:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:10,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 9816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:10,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5242 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 4821 trivial. 0 not checked. [2022-11-03 02:29:11,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:11,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:11,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662171472] [2022-11-03 02:29:11,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:11,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851105885] [2022-11-03 02:29:11,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851105885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:11,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:11,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878781958] [2022-11-03 02:29:11,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:11,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:11,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:11,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:11,406 INFO L87 Difference]: Start difference. First operand 29540 states and 41642 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 02:29:13,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:19,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:24,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:26,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:28,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:28,779 INFO L93 Difference]: Finished difference Result 68432 states and 96562 transitions. [2022-11-03 02:29:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) Word has length 772 [2022-11-03 02:29:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:29,076 INFO L225 Difference]: With dead ends: 68432 [2022-11-03 02:29:29,076 INFO L226 Difference]: Without dead ends: 39494 [2022-11-03 02:29:29,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:29,172 INFO L413 NwaCegarLoop]: 3913 mSDtfsCounter, 3650 mSDsluCounter, 2949 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 30 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3650 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:29,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3650 Valid, 6448 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1080 Invalid, 4 Unknown, 0 Unchecked, 16.0s Time] [2022-11-03 02:29:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39494 states. [2022-11-03 02:29:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39494 to 39465. [2022-11-03 02:29:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39465 states, 24340 states have (on average 1.3066557107641743) internal successors, (31804), 24917 states have internal predecessors, (31804), 11949 states have call successors, (11949), 3187 states have call predecessors, (11949), 3174 states have return successors, (11952), 11801 states have call predecessors, (11952), 11946 states have call successors, (11952) [2022-11-03 02:29:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39465 states to 39465 states and 55705 transitions. [2022-11-03 02:29:31,320 INFO L78 Accepts]: Start accepts. Automaton has 39465 states and 55705 transitions. Word has length 772 [2022-11-03 02:29:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:31,322 INFO L495 AbstractCegarLoop]: Abstraction has 39465 states and 55705 transitions. [2022-11-03 02:29:31,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 3 states have call successors, (104), 3 states have call predecessors, (104), 3 states have return successors, (103), 3 states have call predecessors, (103), 3 states have call successors, (103) [2022-11-03 02:29:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 39465 states and 55705 transitions. [2022-11-03 02:29:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2022-11-03 02:29:31,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:31,362 INFO L195 NwaCegarLoop]: trace histogram [44, 31, 31, 31, 31, 31, 31, 17, 17, 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] [2022-11-03 02:29:31,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:31,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:29:31,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:31,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1939263406, now seen corresponding path program 1 times [2022-11-03 02:29:31,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:31,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614299322] [2022-11-03 02:29:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:32,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:32,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967064406] [2022-11-03 02:29:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:32,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:32,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:32,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:32,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:29:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:36,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 9880 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:37,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 5088 trivial. 0 not checked. [2022-11-03 02:29:37,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:37,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:37,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614299322] [2022-11-03 02:29:37,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:29:37,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967064406] [2022-11-03 02:29:37,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967064406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:37,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:37,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:37,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184177779] [2022-11-03 02:29:37,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:37,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:37,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:37,170 INFO L87 Difference]: Start difference. First operand 39465 states and 55705 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (103), 3 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-11-03 02:29:39,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:51,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:53,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:29:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:56,224 INFO L93 Difference]: Finished difference Result 87944 states and 124102 transitions. [2022-11-03 02:29:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:56,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (103), 3 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) Word has length 789 [2022-11-03 02:29:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:56,585 INFO L225 Difference]: With dead ends: 87944 [2022-11-03 02:29:56,585 INFO L226 Difference]: Without dead ends: 49081 [2022-11-03 02:29:56,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:56,746 INFO L413 NwaCegarLoop]: 5643 mSDtfsCounter, 2803 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 54 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2803 SdHoareTripleChecker+Valid, 8886 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:56,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2803 Valid, 8886 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1588 Invalid, 3 Unknown, 0 Unchecked, 17.3s Time] [2022-11-03 02:29:56,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49081 states. [2022-11-03 02:29:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49081 to 49066. [2022-11-03 02:29:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49066 states, 30309 states have (on average 1.301626579563826) internal successors, (39451), 31021 states have internal predecessors, (39451), 14757 states have call successors, (14757), 4015 states have call predecessors, (14757), 3998 states have return successors, (14763), 14563 states have call predecessors, (14763), 14754 states have call successors, (14763) [2022-11-03 02:29:59,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49066 states to 49066 states and 68971 transitions. [2022-11-03 02:29:59,501 INFO L78 Accepts]: Start accepts. Automaton has 49066 states and 68971 transitions. Word has length 789 [2022-11-03 02:29:59,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:59,506 INFO L495 AbstractCegarLoop]: Abstraction has 49066 states and 68971 transitions. [2022-11-03 02:29:59,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 3 states have call successors, (103), 3 states have call predecessors, (103), 3 states have return successors, (102), 3 states have call predecessors, (102), 3 states have call successors, (102) [2022-11-03 02:29:59,507 INFO L276 IsEmpty]: Start isEmpty. Operand 49066 states and 68971 transitions. [2022-11-03 02:29:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2022-11-03 02:29:59,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:59,545 INFO L195 NwaCegarLoop]: trace histogram [45, 31, 31, 31, 31, 31, 31, 17, 17, 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] [2022-11-03 02:29:59,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 02:29:59,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1063106980, now seen corresponding path program 1 times [2022-11-03 02:29:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:59,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432622588] [2022-11-03 02:29:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:59,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:00,593 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:30:00,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231667107] [2022-11-03 02:30:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:00,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:00,596 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:30:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:05,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 9880 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:30:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5444 backedges. 826 proven. 0 refuted. 0 times theorem prover too weak. 4618 trivial. 0 not checked. [2022-11-03 02:30:05,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:30:05,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:05,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432622588] [2022-11-03 02:30:05,416 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:30:05,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231667107] [2022-11-03 02:30:05,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231667107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:05,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:05,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:30:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001652344] [2022-11-03 02:30:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:05,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:30:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:30:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:30:05,419 INFO L87 Difference]: Start difference. First operand 49066 states and 68971 transitions. Second operand has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 6 states have internal predecessors, (234), 2 states have call successors, (105), 2 states have call predecessors, (105), 3 states have return successors, (104), 3 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:30:07,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:33,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:35,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:39,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:30:43,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:43,838 INFO L93 Difference]: Finished difference Result 112515 states and 160883 transitions. [2022-11-03 02:30:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:30:43,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 6 states have internal predecessors, (234), 2 states have call successors, (105), 2 states have call predecessors, (105), 3 states have return successors, (104), 3 states have call predecessors, (104), 2 states have call successors, (104) Word has length 795 [2022-11-03 02:30:43,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:44,371 INFO L225 Difference]: With dead ends: 112515 [2022-11-03 02:30:44,372 INFO L226 Difference]: Without dead ends: 64051 [2022-11-03 02:30:44,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:30:44,535 INFO L413 NwaCegarLoop]: 4495 mSDtfsCounter, 761 mSDsluCounter, 25153 mSDsCounter, 0 mSdLazyCounter, 4412 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 26061 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4412 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:44,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 26061 Invalid, 4418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 4412 Invalid, 4 Unknown, 0 Unchecked, 35.6s Time] [2022-11-03 02:30:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64051 states. [2022-11-03 02:30:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64051 to 49150. [2022-11-03 02:30:47,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49150 states, 30381 states have (on average 1.3009117540568118) internal successors, (39523), 31093 states have internal predecessors, (39523), 14757 states have call successors, (14757), 4015 states have call predecessors, (14757), 4010 states have return successors, (14787), 14575 states have call predecessors, (14787), 14754 states have call successors, (14787) [2022-11-03 02:30:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49150 states to 49150 states and 69067 transitions. [2022-11-03 02:30:47,827 INFO L78 Accepts]: Start accepts. Automaton has 49150 states and 69067 transitions. Word has length 795 [2022-11-03 02:30:47,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:47,828 INFO L495 AbstractCegarLoop]: Abstraction has 49150 states and 69067 transitions. [2022-11-03 02:30:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.42857142857143) internal successors, (234), 6 states have internal predecessors, (234), 2 states have call successors, (105), 2 states have call predecessors, (105), 3 states have return successors, (104), 3 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:30:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 49150 states and 69067 transitions. [2022-11-03 02:30:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2022-11-03 02:30:47,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:47,855 INFO L195 NwaCegarLoop]: trace histogram [45, 31, 31, 31, 31, 31, 31, 17, 17, 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] [2022-11-03 02:30:47,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:48,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:48,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1608431120, now seen corresponding path program 1 times [2022-11-03 02:30:48,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:48,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396264762] [2022-11-03 02:30:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:49,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:30:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771919864] [2022-11-03 02:30:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:49,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:49,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:49,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:30:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:53,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 9917 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:30:53,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 5444 backedges. 826 proven. 0 refuted. 0 times theorem prover too weak. 4618 trivial. 0 not checked. [2022-11-03 02:30:53,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:30:53,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:53,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396264762] [2022-11-03 02:30:53,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:30:53,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771919864] [2022-11-03 02:30:53,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771919864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:53,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:53,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:30:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407556400] [2022-11-03 02:30:53,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:53,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:30:53,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:30:53,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:30:53,828 INFO L87 Difference]: Start difference. First operand 49150 states and 69067 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:30:55,968 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 [] [2022-11-03 02:31:08,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:10,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:14,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:16,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:18,238 INFO L93 Difference]: Finished difference Result 98214 states and 138171 transitions. [2022-11-03 02:31:18,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:31:18,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 800 [2022-11-03 02:31:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:18,453 INFO L225 Difference]: With dead ends: 98214 [2022-11-03 02:31:18,453 INFO L226 Difference]: Without dead ends: 49666 [2022-11-03 02:31:18,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 797 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:31:18,686 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 83 mSDsluCounter, 7720 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 9947 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:18,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 9947 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1702 Invalid, 5 Unknown, 0 Unchecked, 22.5s Time] [2022-11-03 02:31:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49666 states. [2022-11-03 02:31:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49666 to 49174. [2022-11-03 02:31:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49174 states, 30405 states have (on average 1.3006742312119717) internal successors, (39547), 31117 states have internal predecessors, (39547), 14757 states have call successors, (14757), 4015 states have call predecessors, (14757), 4010 states have return successors, (14787), 14575 states have call predecessors, (14787), 14754 states have call successors, (14787) [2022-11-03 02:31:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49174 states to 49174 states and 69091 transitions. [2022-11-03 02:31:20,829 INFO L78 Accepts]: Start accepts. Automaton has 49174 states and 69091 transitions. Word has length 800 [2022-11-03 02:31:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:20,829 INFO L495 AbstractCegarLoop]: Abstraction has 49174 states and 69091 transitions. [2022-11-03 02:31:20,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:31:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 49174 states and 69091 transitions. [2022-11-03 02:31:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2022-11-03 02:31:20,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:20,851 INFO L195 NwaCegarLoop]: trace histogram [45, 31, 31, 31, 31, 31, 31, 17, 17, 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] [2022-11-03 02:31:20,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-03 02:31:21,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:21,062 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash 2092206630, now seen corresponding path program 1 times [2022-11-03 02:31:21,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:21,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108609236] [2022-11-03 02:31:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:21,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:31:21,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352656480] [2022-11-03 02:31:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:21,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:21,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:31:21,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:31:21,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:31:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:26,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 9944 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:31:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5444 backedges. 826 proven. 0 refuted. 0 times theorem prover too weak. 4618 trivial. 0 not checked. [2022-11-03 02:31:26,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:31:26,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:26,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108609236] [2022-11-03 02:31:26,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:31:26,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352656480] [2022-11-03 02:31:26,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352656480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:26,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:26,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:31:26,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955717624] [2022-11-03 02:31:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:26,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:31:26,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:26,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:31:26,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:31:26,904 INFO L87 Difference]: Start difference. First operand 49174 states and 69091 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:31:29,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:42,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:47,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:49,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:31:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:50,853 INFO L93 Difference]: Finished difference Result 98286 states and 138255 transitions. [2022-11-03 02:31:50,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:31:50,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 801 [2022-11-03 02:31:50,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:51,055 INFO L225 Difference]: With dead ends: 98286 [2022-11-03 02:31:51,055 INFO L226 Difference]: Without dead ends: 49714 [2022-11-03 02:31:51,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:31:51,314 INFO L413 NwaCegarLoop]: 3347 mSDtfsCounter, 87 mSDsluCounter, 7723 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 9949 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:51,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 9949 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1701 Invalid, 4 Unknown, 0 Unchecked, 21.9s Time] [2022-11-03 02:31:51,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49714 states. [2022-11-03 02:31:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49714 to 49198. [2022-11-03 02:31:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49198 states, 30429 states have (on average 1.3008314436885866) internal successors, (39583), 31141 states have internal predecessors, (39583), 14757 states have call successors, (14757), 4015 states have call predecessors, (14757), 4010 states have return successors, (14787), 14575 states have call predecessors, (14787), 14754 states have call successors, (14787) [2022-11-03 02:31:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49198 states to 49198 states and 69127 transitions. [2022-11-03 02:31:53,565 INFO L78 Accepts]: Start accepts. Automaton has 49198 states and 69127 transitions. Word has length 801 [2022-11-03 02:31:53,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:53,566 INFO L495 AbstractCegarLoop]: Abstraction has 49198 states and 69127 transitions. [2022-11-03 02:31:53,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (105), 2 states have call predecessors, (105), 2 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2022-11-03 02:31:53,567 INFO L276 IsEmpty]: Start isEmpty. Operand 49198 states and 69127 transitions. [2022-11-03 02:31:53,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2022-11-03 02:31:53,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:53,597 INFO L195 NwaCegarLoop]: trace histogram [45, 31, 31, 31, 31, 31, 31, 17, 17, 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] [2022-11-03 02:31:53,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:31:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:53,822 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 231466677, now seen corresponding path program 1 times [2022-11-03 02:31:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:53,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535995608] [2022-11-03 02:31:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:53,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:54,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:31:54,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999888407] [2022-11-03 02:31:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:54,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:31:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:31:54,602 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:31:54,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:31:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:59,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 9934 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:31:59,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:31:59,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5444 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 4858 trivial. 0 not checked. [2022-11-03 02:31:59,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:31:59,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:59,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535995608] [2022-11-03 02:31:59,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:31:59,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999888407] [2022-11-03 02:31:59,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999888407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:59,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:59,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:31:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637872229] [2022-11-03 02:31:59,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:59,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:31:59,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:31:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:31:59,972 INFO L87 Difference]: Start difference. First operand 49198 states and 69127 transitions. Second operand has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (106), 2 states have call predecessors, (106), 3 states have return successors, (105), 4 states have call predecessors, (105), 3 states have call successors, (105) [2022-11-03 02:32:02,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:28,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:30,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:32:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:38,631 INFO L93 Difference]: Finished difference Result 143592 states and 209946 transitions. [2022-11-03 02:32:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:32:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (106), 2 states have call predecessors, (106), 3 states have return successors, (105), 4 states have call predecessors, (105), 3 states have call successors, (105) Word has length 804 [2022-11-03 02:32:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:38,982 INFO L225 Difference]: With dead ends: 143592 [2022-11-03 02:32:38,982 INFO L226 Difference]: Without dead ends: 94996 [2022-11-03 02:32:39,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 800 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:32:39,105 INFO L413 NwaCegarLoop]: 5076 mSDtfsCounter, 2789 mSDsluCounter, 21685 mSDsCounter, 0 mSdLazyCounter, 3681 mSolverCounterSat, 654 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 23887 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 3681 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:39,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 23887 Invalid, 4338 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [654 Valid, 3681 Invalid, 3 Unknown, 0 Unchecked, 33.6s Time] [2022-11-03 02:32:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94996 states. [2022-11-03 02:32:42,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94996 to 49333. [2022-11-03 02:32:42,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49333 states, 30504 states have (on average 1.3004851822711776) internal successors, (39670), 31228 states have internal predecessors, (39670), 14805 states have call successors, (14805), 4015 states have call predecessors, (14805), 4022 states have return successors, (14871), 14626 states have call predecessors, (14871), 14802 states have call successors, (14871) [2022-11-03 02:32:43,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49333 states to 49333 states and 69346 transitions. [2022-11-03 02:32:43,088 INFO L78 Accepts]: Start accepts. Automaton has 49333 states and 69346 transitions. Word has length 804 [2022-11-03 02:32:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:43,090 INFO L495 AbstractCegarLoop]: Abstraction has 49333 states and 69346 transitions. [2022-11-03 02:32:43,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.166666666666664) internal successors, (241), 5 states have internal predecessors, (241), 3 states have call successors, (106), 2 states have call predecessors, (106), 3 states have return successors, (105), 4 states have call predecessors, (105), 3 states have call successors, (105) [2022-11-03 02:32:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 49333 states and 69346 transitions. [2022-11-03 02:32:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2022-11-03 02:32:43,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:43,124 INFO L195 NwaCegarLoop]: trace histogram [45, 31, 31, 31, 31, 31, 31, 17, 17, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:43,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:32:43,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:32:43,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:43,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:43,339 INFO L85 PathProgramCache]: Analyzing trace with hash -927004367, now seen corresponding path program 1 times [2022-11-03 02:32:43,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:43,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377399418] [2022-11-03 02:32:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:43,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:44,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:32:44,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771547548] [2022-11-03 02:32:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:44,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:32:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:32:44,157 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:32:44,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:32:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:49,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 10196 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:32:49,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:32:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5522 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 4922 trivial. 0 not checked. [2022-11-03 02:32:50,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:32:50,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:50,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377399418] [2022-11-03 02:32:50,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:32:50,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771547548] [2022-11-03 02:32:50,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771547548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:50,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:50,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:32:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240058098] [2022-11-03 02:32:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:50,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:32:50,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:32:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:32:50,111 INFO L87 Difference]: Start difference. First operand 49333 states and 69346 transitions. Second operand has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 6 states have internal predecessors, (254), 3 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (109), 4 states have call predecessors, (109), 3 states have call successors, (109) [2022-11-03 02:32:52,263 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 [] [2022-11-03 02:33:17,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:19,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:26,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:33:35,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:35,321 INFO L93 Difference]: Finished difference Result 129069 states and 186964 transitions. [2022-11-03 02:33:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:33:35,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 6 states have internal predecessors, (254), 3 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (109), 4 states have call predecessors, (109), 3 states have call successors, (109) Word has length 847 [2022-11-03 02:33:35,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:35,610 INFO L225 Difference]: With dead ends: 129069 [2022-11-03 02:33:35,610 INFO L226 Difference]: Without dead ends: 80338 [2022-11-03 02:33:35,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 842 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:33:35,729 INFO L413 NwaCegarLoop]: 4960 mSDtfsCounter, 2337 mSDsluCounter, 26754 mSDsCounter, 0 mSdLazyCounter, 4528 mSolverCounterSat, 650 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 28062 SdHoareTripleChecker+Invalid, 5182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 4528 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:35,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2694 Valid, 28062 Invalid, 5182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [650 Valid, 4528 Invalid, 4 Unknown, 0 Unchecked, 39.9s Time] [2022-11-03 02:33:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80338 states. [2022-11-03 02:33:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80338 to 49345. [2022-11-03 02:33:39,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49345 states, 30516 states have (on average 1.3003670205793683) internal successors, (39682), 31228 states have internal predecessors, (39682), 14805 states have call successors, (14805), 4015 states have call predecessors, (14805), 4022 states have return successors, (14871), 14626 states have call predecessors, (14871), 14802 states have call successors, (14871) [2022-11-03 02:33:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49345 states to 49345 states and 69358 transitions. [2022-11-03 02:33:39,211 INFO L78 Accepts]: Start accepts. Automaton has 49345 states and 69358 transitions. Word has length 847 [2022-11-03 02:33:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:39,212 INFO L495 AbstractCegarLoop]: Abstraction has 49345 states and 69358 transitions. [2022-11-03 02:33:39,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.285714285714285) internal successors, (254), 6 states have internal predecessors, (254), 3 states have call successors, (110), 2 states have call predecessors, (110), 3 states have return successors, (109), 4 states have call predecessors, (109), 3 states have call successors, (109) [2022-11-03 02:33:39,212 INFO L276 IsEmpty]: Start isEmpty. Operand 49345 states and 69358 transitions. [2022-11-03 02:33:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2022-11-03 02:33:39,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:39,240 INFO L195 NwaCegarLoop]: trace histogram [45, 31, 31, 31, 31, 31, 31, 17, 17, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:39,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:33:39,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 02:33:39,466 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash -531420109, now seen corresponding path program 1 times [2022-11-03 02:33:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:39,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733238005] [2022-11-03 02:33:39,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:39,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:40,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:33:40,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [297587649] [2022-11-03 02:33:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:40,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:33:40,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:33:40,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:33:40,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c062bb3-cd3a-4df6-ab9a-0360cd3983e3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:33:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:45,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 9905 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:33:45,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:33:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 544 proven. 0 refuted. 0 times theorem prover too weak. 4826 trivial. 0 not checked. [2022-11-03 02:33:46,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:33:46,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:46,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733238005] [2022-11-03 02:33:46,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:33:46,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297587649] [2022-11-03 02:33:46,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297587649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:46,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:46,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:33:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924445029] [2022-11-03 02:33:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:33:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:33:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:33:46,475 INFO L87 Difference]: Start difference. First operand 49345 states and 69358 transitions. Second operand has 8 states, 8 states have (on average 31.5) internal successors, (252), 7 states have internal predecessors, (252), 4 states have call successors, (108), 2 states have call predecessors, (108), 3 states have return successors, (107), 5 states have call predecessors, (107), 4 states have call successors, (107) [2022-11-03 02:33:48,586 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 [] [2022-11-03 02:34:13,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:25,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:27,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:34:40,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:40,890 INFO L93 Difference]: Finished difference Result 146943 states and 215217 transitions. [2022-11-03 02:34:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:34:40,891 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.5) internal successors, (252), 7 states have internal predecessors, (252), 4 states have call successors, (108), 2 states have call predecessors, (108), 3 states have return successors, (107), 5 states have call predecessors, (107), 4 states have call successors, (107) Word has length 819 [2022-11-03 02:34:40,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:41,241 INFO L225 Difference]: With dead ends: 146943 [2022-11-03 02:34:41,241 INFO L226 Difference]: Without dead ends: 98200 [2022-11-03 02:34:41,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:34:41,541 INFO L413 NwaCegarLoop]: 5310 mSDtfsCounter, 5349 mSDsluCounter, 32772 mSDsCounter, 0 mSdLazyCounter, 5225 mSolverCounterSat, 2340 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5758 SdHoareTripleChecker+Valid, 33794 SdHoareTripleChecker+Invalid, 7568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2340 IncrementalHoareTripleChecker+Valid, 5225 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:41,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5758 Valid, 33794 Invalid, 7568 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2340 Valid, 5225 Invalid, 3 Unknown, 0 Unchecked, 45.4s Time] [2022-11-03 02:34:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98200 states.