./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V --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 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:53:11,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:53:11,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:53:11,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:53:11,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:53:11,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:53:11,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:53:11,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:53:11,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:53:11,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:53:11,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:53:11,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:53:11,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:53:11,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:53:11,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:53:11,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:53:11,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:53:11,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:53:11,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:53:11,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:53:11,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:53:11,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:53:11,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:53:11,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:53:11,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:53:11,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:53:11,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:53:11,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:53:11,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:53:11,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:53:11,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:53:11,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:53:11,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:53:11,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:53:11,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:53:11,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:53:11,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:53:11,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:53:11,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:53:11,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:53:11,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:53:11,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:53:11,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:53:11,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:53:11,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:53:11,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:53:11,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:53:11,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:53:11,944 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:53:11,944 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:53:11,944 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:53:11,948 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:53:11,949 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:53:11,950 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:53:11,950 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:53:11,950 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:53:11,950 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:53:11,951 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:53:11,951 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:53:11,951 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:53:11,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:53:11,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:53:11,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:53:11,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:53:11,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:53:11,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:53:11,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:53:11,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:53:11,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:53:11,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:53:11,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:53:11,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:53:11,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:53:11,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:53:11,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:53:11,957 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:53:11,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:53:11,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:53:11,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:53:11,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:53:11,958 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 004fcd1800da3fcc8c5839d85d0662ed24df5100e10ec8a5024be56f561eab28 [2021-11-23 03:53:12,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:53:12,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:53:12,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:53:12,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:53:12,273 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:53:12,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-23 03:53:12,359 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/data/d8433d099/2a7ed7d6063841408f87f4ae71953af1/FLAG2cee08b6e [2021-11-23 03:53:13,473 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:53:13,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-23 03:53:13,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/data/d8433d099/2a7ed7d6063841408f87f4ae71953af1/FLAG2cee08b6e [2021-11-23 03:53:13,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/data/d8433d099/2a7ed7d6063841408f87f4ae71953af1 [2021-11-23 03:53:13,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:53:13,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:53:13,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:53:13,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:53:13,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:53:13,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:53:13" (1/1) ... [2021-11-23 03:53:13,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a606f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:13, skipping insertion in model container [2021-11-23 03:53:13,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:53:13" (1/1) ... [2021-11-23 03:53:13,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:53:14,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:53:18,108 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_fe91107d-90b3-4663-aeff-2c120e6bc844/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-23 03:53:18,112 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_fe91107d-90b3-4663-aeff-2c120e6bc844/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-23 03:53:18,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:53:18,221 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:53:18,740 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_fe91107d-90b3-4663-aeff-2c120e6bc844/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452511,452524] [2021-11-23 03:53:18,740 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_fe91107d-90b3-4663-aeff-2c120e6bc844/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[452656,452669] [2021-11-23 03:53:18,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:53:19,112 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:53:19,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19 WrapperNode [2021-11-23 03:53:19,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:53:19,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:53:19,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:53:19,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:53:19,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:19,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:19,708 INFO L137 Inliner]: procedures = 548, calls = 4413, calls flagged for inlining = 251, calls inlined = 230, statements flattened = 8724 [2021-11-23 03:53:19,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:53:19,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:53:19,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:53:19,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:53:19,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:19,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:19,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:19,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:20,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:20,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:20,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:20,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:53:20,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:53:20,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:53:20,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:53:20,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (1/1) ... [2021-11-23 03:53:20,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:53:20,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:53:20,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:53:20,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:53:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_122 [2021-11-23 03:53:20,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_122 [2021-11-23 03:53:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 03:53:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 03:53:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:53:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:53:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-23 03:53:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-23 03:53:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-23 03:53:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-23 03:53:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-23 03:53:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-23 03:53:20,359 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 03:53:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 03:53:20,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_88 [2021-11-23 03:53:20,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_88 [2021-11-23 03:53:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_107 [2021-11-23 03:53:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_107 [2021-11-23 03:53:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:53:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:53:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:53:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:53:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-23 03:53:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-23 03:53:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-23 03:53:20,360 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-23 03:53:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-23 03:53:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-23 03:53:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-23 03:53:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-23 03:53:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 03:53:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 03:53:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 03:53:20,361 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 03:53:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 03:53:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 03:53:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-23 03:53:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-23 03:53:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 03:53:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 03:53:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 03:53:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 03:53:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_5 [2021-11-23 03:53:20,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_5 [2021-11-23 03:53:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:53:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:53:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-23 03:53:20,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-23 03:53:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-23 03:53:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-23 03:53:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-23 03:53:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-23 03:53:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 03:53:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 03:53:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:53:20,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:53:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-23 03:53:20,366 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-23 03:53:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 03:53:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 03:53:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 03:53:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 03:53:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-23 03:53:20,367 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-23 03:53:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 03:53:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 03:53:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:53:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:53:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-23 03:53:20,368 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-23 03:53:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:53:20,369 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:53:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_5_2 [2021-11-23 03:53:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_5_2 [2021-11-23 03:53:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 03:53:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 03:53:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:53:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-23 03:53:20,370 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-23 03:53:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-23 03:53:20,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-23 03:53:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:53:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:53:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_118 [2021-11-23 03:53:20,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_118 [2021-11-23 03:53:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:53:20,373 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:53:20,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_114 [2021-11-23 03:53:20,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_114 [2021-11-23 03:53:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:53:20,380 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-23 03:53:20,381 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-23 03:53:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-23 03:53:20,381 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-23 03:53:20,381 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-23 03:53:20,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-23 03:53:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:53:20,382 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:53:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-23 03:53:20,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-23 03:53:20,382 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:53:20,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:53:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:53:20,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_106 [2021-11-23 03:53:20,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_106 [2021-11-23 03:53:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:53:20,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:53:20,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:53:20,385 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-23 03:53:20,385 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-23 03:53:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-23 03:53:20,386 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-23 03:53:20,386 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:53:20,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:53:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:53:20,387 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:53:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:53:20,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:53:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:53:20,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:53:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 03:53:20,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 03:53:20,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 03:53:20,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 03:53:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-23 03:53:20,388 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-23 03:53:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_132 [2021-11-23 03:53:20,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_132 [2021-11-23 03:53:20,388 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-23 03:53:20,388 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-23 03:53:20,392 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 03:53:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 03:53:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-23 03:53:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-23 03:53:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 03:53:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 03:53:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-23 03:53:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-23 03:53:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:53:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-23 03:53:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-23 03:53:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 03:53:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 03:53:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:53:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:53:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:53:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:53:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:53:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:53:20,395 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 03:53:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 03:53:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:53:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:53:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 03:53:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 03:53:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:53:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:53:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:53:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:53:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-23 03:53:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-23 03:53:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-23 03:53:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-23 03:53:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:53:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:53:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-23 03:53:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-23 03:53:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-23 03:53:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-23 03:53:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 03:53:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 03:53:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-23 03:53:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-23 03:53:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 03:53:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 03:53:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-23 03:53:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-23 03:53:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:53:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:53:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 03:53:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 03:53:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-23 03:53:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-23 03:53:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:53:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:53:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-23 03:53:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-23 03:53:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-23 03:53:20,402 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-23 03:53:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-23 03:53:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-23 03:53:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-23 03:53:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-23 03:53:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-23 03:53:20,403 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-23 03:53:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-23 03:53:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-23 03:53:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-23 03:53:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-23 03:53:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-23 03:53:20,404 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-23 03:53:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-23 03:53:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-23 03:53:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:53:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:53:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-23 03:53:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-23 03:53:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:53:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:53:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:53:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:53:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:53:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:53:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-23 03:53:20,406 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-23 03:53:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 03:53:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 03:53:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:53:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:53:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-23 03:53:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-23 03:53:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 03:53:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 03:53:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 03:53:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 03:53:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:53:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_111 [2021-11-23 03:53:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_111 [2021-11-23 03:53:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-23 03:53:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-23 03:53:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 03:53:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 03:53:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:53:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-23 03:53:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-23 03:53:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-23 03:53:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-23 03:53:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:53:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 03:53:20,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 03:53:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure rx_oom_timer [2021-11-23 03:53:20,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_oom_timer [2021-11-23 03:53:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-23 03:53:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-23 03:53:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:53:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:53:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:53:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:53:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 03:53:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 03:53:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 03:53:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 03:53:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-23 03:53:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-23 03:53:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-23 03:53:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-23 03:53:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-23 03:53:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-23 03:53:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-23 03:53:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-23 03:53:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-23 03:53:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-23 03:53:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_105 [2021-11-23 03:53:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_105 [2021-11-23 03:53:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:53:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:53:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:53:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:53:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 03:53:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 03:53:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_133 [2021-11-23 03:53:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_133 [2021-11-23 03:53:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:53:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:53:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-23 03:53:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-23 03:53:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_timer [2021-11-23 03:53:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_timer [2021-11-23 03:53:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:53:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-23 03:53:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-23 03:53:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-23 03:53:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-23 03:53:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 03:53:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 03:53:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:53:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:53:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-23 03:53:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-23 03:53:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-23 03:53:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-23 03:53:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_10_2 [2021-11-23 03:53:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_10_2 [2021-11-23 03:53:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-23 03:53:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-23 03:53:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-23 03:53:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-23 03:53:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-23 03:53:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-23 03:53:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-23 03:53:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-23 03:53:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-23 03:53:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-23 03:53:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:53:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:53:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-23 03:53:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-23 03:53:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 03:53:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 03:53:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 03:53:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 03:53:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-23 03:53:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-23 03:53:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:53:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:53:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_112 [2021-11-23 03:53:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_112 [2021-11-23 03:53:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_113 [2021-11-23 03:53:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_113 [2021-11-23 03:53:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:53:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:53:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:53:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-23 03:53:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-23 03:53:21,572 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:53:21,576 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:53:23,461 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:53:29,344 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:53:32,329 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:53:32,330 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:53:32,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:53:32 BoogieIcfgContainer [2021-11-23 03:53:32,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:53:32,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:53:32,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:53:32,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:53:32,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:53:13" (1/3) ... [2021-11-23 03:53:32,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210aa78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:53:32, skipping insertion in model container [2021-11-23 03:53:32,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:53:19" (2/3) ... [2021-11-23 03:53:32,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210aa78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:53:32, skipping insertion in model container [2021-11-23 03:53:32,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:53:32" (3/3) ... [2021-11-23 03:53:32,347 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-alloc-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-23 03:53:32,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:53:32,353 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:53:32,430 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:53:32,442 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:53:32,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:53:32,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 2088 states, 1173 states have (on average 1.3009377664109123) internal successors, (1526), 1259 states have internal predecessors, (1526), 760 states have call successors, (760), 154 states have call predecessors, (760), 153 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) [2021-11-23 03:53:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-23 03:53:32,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:32,561 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 5, 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] [2021-11-23 03:53:32,562 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:32,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1318744723, now seen corresponding path program 1 times [2021-11-23 03:53:32,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:32,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624849860] [2021-11-23 03:53:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:32,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-23 03:53:34,207 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:34,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624849860] [2021-11-23 03:53:34,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624849860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:34,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:34,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:53:34,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186875365] [2021-11-23 03:53:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:34,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:53:34,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:34,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:53:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:53:34,262 INFO L87 Difference]: Start difference. First operand has 2088 states, 1173 states have (on average 1.3009377664109123) internal successors, (1526), 1259 states have internal predecessors, (1526), 760 states have call successors, (760), 154 states have call predecessors, (760), 153 states have return successors, (753), 735 states have call predecessors, (753), 753 states have call successors, (753) Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:53:36,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:53:39,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:53:40,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:53:42,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:53:50,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:53:50,325 INFO L93 Difference]: Finished difference Result 4913 states and 7223 transitions. [2021-11-23 03:53:50,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:53:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 118 [2021-11-23 03:53:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:53:50,388 INFO L225 Difference]: With dead ends: 4913 [2021-11-23 03:53:50,388 INFO L226 Difference]: Without dead ends: 2757 [2021-11-23 03:53:50,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:53:50,424 INFO L933 BasicCegarLoop]: 2936 mSDtfsCounter, 997 mSDsluCounter, 12376 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 13836 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:53:50,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 13836 Invalid, 2503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 2496 Invalid, 1 Unknown, 0 Unchecked, 15.3s Time] [2021-11-23 03:53:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2021-11-23 03:53:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2750. [2021-11-23 03:53:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 1568 states have (on average 1.280612244897959) internal successors, (2008), 1670 states have internal predecessors, (2008), 957 states have call successors, (957), 236 states have call predecessors, (957), 224 states have return successors, (997), 918 states have call predecessors, (997), 957 states have call successors, (997) [2021-11-23 03:53:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3962 transitions. [2021-11-23 03:53:50,854 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3962 transitions. Word has length 118 [2021-11-23 03:53:50,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:53:50,855 INFO L470 AbstractCegarLoop]: Abstraction has 2750 states and 3962 transitions. [2021-11-23 03:53:50,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 03:53:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3962 transitions. [2021-11-23 03:53:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-23 03:53:50,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:53:50,884 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:53:50,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:53:50,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:53:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:53:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1782148107, now seen corresponding path program 1 times [2021-11-23 03:53:50,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:53:50,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786887274] [2021-11-23 03:53:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:53:50,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:53:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:53:53,116 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-23 03:53:53,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:53:53,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786887274] [2021-11-23 03:53:53,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786887274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:53:53,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:53:53,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:53:53,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216043097] [2021-11-23 03:53:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:53:53,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:53:53,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:53:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:53:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:53:53,130 INFO L87 Difference]: Start difference. First operand 2750 states and 3962 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:53:55,352 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:53:58,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:03,157 INFO L93 Difference]: Finished difference Result 4779 states and 6939 transitions. [2021-11-23 03:54:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:54:03,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 201 [2021-11-23 03:54:03,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:03,188 INFO L225 Difference]: With dead ends: 4779 [2021-11-23 03:54:03,188 INFO L226 Difference]: Without dead ends: 2754 [2021-11-23 03:54:03,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:54:03,205 INFO L933 BasicCegarLoop]: 2592 mSDtfsCounter, 6 mSDsluCounter, 8862 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10357 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:03,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10357 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1476 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-11-23 03:54:03,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-11-23 03:54:03,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2754. [2021-11-23 03:54:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 1571 states have (on average 1.2800763844684915) internal successors, (2011), 1673 states have internal predecessors, (2011), 957 states have call successors, (957), 237 states have call predecessors, (957), 225 states have return successors, (997), 918 states have call predecessors, (997), 957 states have call successors, (997) [2021-11-23 03:54:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3965 transitions. [2021-11-23 03:54:03,402 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3965 transitions. Word has length 201 [2021-11-23 03:54:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:03,404 INFO L470 AbstractCegarLoop]: Abstraction has 2754 states and 3965 transitions. [2021-11-23 03:54:03,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:54:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3965 transitions. [2021-11-23 03:54:03,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-23 03:54:03,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:03,417 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:54:03,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:54:03,420 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:54:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:03,421 INFO L85 PathProgramCache]: Analyzing trace with hash -201258096, now seen corresponding path program 1 times [2021-11-23 03:54:03,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:03,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789286307] [2021-11-23 03:54:03,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:03,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-23 03:54:04,991 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:04,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789286307] [2021-11-23 03:54:04,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789286307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:04,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:04,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:54:04,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697113827] [2021-11-23 03:54:04,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:04,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:54:04,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:54:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:54:04,996 INFO L87 Difference]: Start difference. First operand 2754 states and 3965 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:54:07,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:09,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:10,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:16,448 INFO L93 Difference]: Finished difference Result 4795 states and 6953 transitions. [2021-11-23 03:54:16,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:54:16,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 198 [2021-11-23 03:54:16,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:16,477 INFO L225 Difference]: With dead ends: 4795 [2021-11-23 03:54:16,477 INFO L226 Difference]: Without dead ends: 2766 [2021-11-23 03:54:16,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:54:16,493 INFO L933 BasicCegarLoop]: 2602 mSDtfsCounter, 19 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10384 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:16,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10384 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1480 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2021-11-23 03:54:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2021-11-23 03:54:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2758. [2021-11-23 03:54:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2758 states, 1574 states have (on average 1.2795425667090217) internal successors, (2014), 1676 states have internal predecessors, (2014), 957 states have call successors, (957), 238 states have call predecessors, (957), 226 states have return successors, (997), 918 states have call predecessors, (997), 957 states have call successors, (997) [2021-11-23 03:54:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 3968 transitions. [2021-11-23 03:54:16,672 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 3968 transitions. Word has length 198 [2021-11-23 03:54:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:16,673 INFO L470 AbstractCegarLoop]: Abstraction has 2758 states and 3968 transitions. [2021-11-23 03:54:16,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-23 03:54:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 3968 transitions. [2021-11-23 03:54:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-23 03:54:16,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:16,690 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 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] [2021-11-23 03:54:16,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:54:16,691 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:54:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 131865195, now seen corresponding path program 1 times [2021-11-23 03:54:16,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:16,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547373448] [2021-11-23 03:54:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:16,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-23 03:54:17,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:17,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547373448] [2021-11-23 03:54:17,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547373448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:17,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:17,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:54:17,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439667399] [2021-11-23 03:54:17,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:17,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:17,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:17,102 INFO L87 Difference]: Start difference. First operand 2758 states and 3968 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 03:54:19,404 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:21,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:24,533 INFO L93 Difference]: Finished difference Result 6671 states and 9535 transitions. [2021-11-23 03:54:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 204 [2021-11-23 03:54:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:24,575 INFO L225 Difference]: With dead ends: 6671 [2021-11-23 03:54:24,576 INFO L226 Difference]: Without dead ends: 4071 [2021-11-23 03:54:24,594 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:54:24,595 INFO L933 BasicCegarLoop]: 3116 mSDtfsCounter, 2442 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:24,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 5186 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 666 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:54:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2021-11-23 03:54:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4069. [2021-11-23 03:54:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 2292 states have (on average 1.2757417102966842) internal successors, (2924), 2447 states have internal predecessors, (2924), 1424 states have call successors, (1424), 363 states have call predecessors, (1424), 352 states have return successors, (1464), 1375 states have call predecessors, (1464), 1424 states have call successors, (1464) [2021-11-23 03:54:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5812 transitions. [2021-11-23 03:54:24,980 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5812 transitions. Word has length 204 [2021-11-23 03:54:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:54:24,980 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 5812 transitions. [2021-11-23 03:54:24,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 03:54:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5812 transitions. [2021-11-23 03:54:25,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-23 03:54:25,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:25,001 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:54:25,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:54:25,001 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:54:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1114395318, now seen corresponding path program 1 times [2021-11-23 03:54:25,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:54:25,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263038964] [2021-11-23 03:54:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:25,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:25,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-11-23 03:54:26,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:54:26,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263038964] [2021-11-23 03:54:26,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263038964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:26,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:26,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:54:26,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572625122] [2021-11-23 03:54:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:26,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:54:26,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:54:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:54:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:54:26,209 INFO L87 Difference]: Start difference. First operand 4069 states and 5812 transitions. Second operand has 11 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) [2021-11-23 03:54:30,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:32,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:34,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:36,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:38,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:40,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:55,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:57,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:14,463 INFO L93 Difference]: Finished difference Result 8130 states and 11680 transitions. [2021-11-23 03:55:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:55:14,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) Word has length 320 [2021-11-23 03:55:14,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:14,539 INFO L225 Difference]: With dead ends: 8130 [2021-11-23 03:55:14,539 INFO L226 Difference]: Without dead ends: 8128 [2021-11-23 03:55:14,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:55:14,546 INFO L933 BasicCegarLoop]: 2963 mSDtfsCounter, 5445 mSDsluCounter, 12833 mSDsCounter, 0 mSdLazyCounter, 17532 mSolverCounterSat, 3964 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6217 SdHoareTripleChecker+Valid, 14108 SdHoareTripleChecker+Invalid, 21498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3964 IncrementalHoareTripleChecker+Valid, 17532 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:14,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6217 Valid, 14108 Invalid, 21498 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3964 Valid, 17532 Invalid, 2 Unknown, 0 Unchecked, 46.6s Time] [2021-11-23 03:55:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8128 states. [2021-11-23 03:55:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8128 to 7799. [2021-11-23 03:55:15,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7799 states, 4396 states have (on average 1.268653321201092) internal successors, (5577), 4685 states have internal predecessors, (5577), 2666 states have call successors, (2666), 759 states have call predecessors, (2666), 736 states have return successors, (2907), 2566 states have call predecessors, (2907), 2666 states have call successors, (2907) [2021-11-23 03:55:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7799 states to 7799 states and 11150 transitions. [2021-11-23 03:55:15,335 INFO L78 Accepts]: Start accepts. Automaton has 7799 states and 11150 transitions. Word has length 320 [2021-11-23 03:55:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:15,340 INFO L470 AbstractCegarLoop]: Abstraction has 7799 states and 11150 transitions. [2021-11-23 03:55:15,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 7 states have call successors, (61), 4 states have call predecessors, (61), 6 states have return successors, (58), 8 states have call predecessors, (58), 7 states have call successors, (58) [2021-11-23 03:55:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7799 states and 11150 transitions. [2021-11-23 03:55:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-23 03:55:15,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:15,380 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:55:15,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:55:15,380 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:55:15,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash 807845533, now seen corresponding path program 1 times [2021-11-23 03:55:15,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:15,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444223802] [2021-11-23 03:55:15,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:15,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 768 trivial. 0 not checked. [2021-11-23 03:55:15,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:15,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444223802] [2021-11-23 03:55:15,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444223802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:15,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:15,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:55:15,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109102316] [2021-11-23 03:55:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:15,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:55:15,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:55:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:55:15,868 INFO L87 Difference]: Start difference. First operand 7799 states and 11150 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 4 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-23 03:55:18,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:20,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:22,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:30,026 INFO L93 Difference]: Finished difference Result 26179 states and 38105 transitions. [2021-11-23 03:55:30,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:55:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 4 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 425 [2021-11-23 03:55:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:30,189 INFO L225 Difference]: With dead ends: 26179 [2021-11-23 03:55:30,190 INFO L226 Difference]: Without dead ends: 18396 [2021-11-23 03:55:30,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:55:30,261 INFO L933 BasicCegarLoop]: 5415 mSDtfsCounter, 4960 mSDsluCounter, 5949 mSDsCounter, 0 mSdLazyCounter, 4485 mSolverCounterSat, 70 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 10413 SdHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4485 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:30,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4960 Valid, 10413 Invalid, 4557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 4485 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2021-11-23 03:55:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2021-11-23 03:55:31,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 18388. [2021-11-23 03:55:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18388 states, 10389 states have (on average 1.265088073924343) internal successors, (13143), 11094 states have internal predecessors, (13143), 6198 states have call successors, (6198), 1833 states have call predecessors, (6198), 1800 states have return successors, (7175), 5979 states have call predecessors, (7175), 6198 states have call successors, (7175) [2021-11-23 03:55:31,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18388 states to 18388 states and 26516 transitions. [2021-11-23 03:55:31,825 INFO L78 Accepts]: Start accepts. Automaton has 18388 states and 26516 transitions. Word has length 425 [2021-11-23 03:55:31,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:31,827 INFO L470 AbstractCegarLoop]: Abstraction has 18388 states and 26516 transitions. [2021-11-23 03:55:31,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 4 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2021-11-23 03:55:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 18388 states and 26516 transitions. [2021-11-23 03:55:31,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-23 03:55:31,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:31,877 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:55:31,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:55:31,878 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:55:31,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash -598718326, now seen corresponding path program 1 times [2021-11-23 03:55:31,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:31,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626284238] [2021-11-23 03:55:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:31,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2021-11-23 03:55:32,437 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:32,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626284238] [2021-11-23 03:55:32,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626284238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:32,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:32,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:55:32,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892841961] [2021-11-23 03:55:32,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:32,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:55:32,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:55:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:55:32,441 INFO L87 Difference]: Start difference. First operand 18388 states and 26516 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-23 03:55:34,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:36,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:55:39,699 INFO L93 Difference]: Finished difference Result 31727 states and 45934 transitions. [2021-11-23 03:55:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:55:39,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 366 [2021-11-23 03:55:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:55:39,823 INFO L225 Difference]: With dead ends: 31727 [2021-11-23 03:55:39,823 INFO L226 Difference]: Without dead ends: 18586 [2021-11-23 03:55:39,903 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:55:39,905 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 34 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:55:39,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 5155 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 735 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 03:55:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18586 states. [2021-11-23 03:55:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18586 to 18526. [2021-11-23 03:55:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18526 states, 10468 states have (on average 1.2667176155903705) internal successors, (13260), 11183 states have internal predecessors, (13260), 6257 states have call successors, (6257), 1833 states have call predecessors, (6257), 1800 states have return successors, (7236), 6033 states have call predecessors, (7236), 6257 states have call successors, (7236) [2021-11-23 03:55:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 26753 transitions. [2021-11-23 03:55:41,592 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 26753 transitions. Word has length 366 [2021-11-23 03:55:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:41,593 INFO L470 AbstractCegarLoop]: Abstraction has 18526 states and 26753 transitions. [2021-11-23 03:55:41,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-23 03:55:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 26753 transitions. [2021-11-23 03:55:41,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-23 03:55:41,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:41,635 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 03:55:41,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:55:41,636 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:55:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 12905827, now seen corresponding path program 1 times [2021-11-23 03:55:41,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:55:41,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565067753] [2021-11-23 03:55:41,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:41,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-23 03:55:42,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:55:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565067753] [2021-11-23 03:55:42,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565067753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:42,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:42,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 03:55:42,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721147493] [2021-11-23 03:55:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:42,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:55:42,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:55:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:55:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:55:42,966 INFO L87 Difference]: Start difference. First operand 18526 states and 26753 transitions. Second operand has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) [2021-11-23 03:55:47,003 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:49,026 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:51,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:54,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:55:56,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:15,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:17,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:19,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:20,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:25,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:38,790 INFO L93 Difference]: Finished difference Result 37606 states and 54724 transitions. [2021-11-23 03:56:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 03:56:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) Word has length 375 [2021-11-23 03:56:38,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:38,995 INFO L225 Difference]: With dead ends: 37606 [2021-11-23 03:56:38,995 INFO L226 Difference]: Without dead ends: 37604 [2021-11-23 03:56:39,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2021-11-23 03:56:39,015 INFO L933 BasicCegarLoop]: 2681 mSDtfsCounter, 10536 mSDsluCounter, 9393 mSDsCounter, 0 mSdLazyCounter, 22832 mSolverCounterSat, 9811 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11396 SdHoareTripleChecker+Valid, 10825 SdHoareTripleChecker+Invalid, 32647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9811 IncrementalHoareTripleChecker+Valid, 22832 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:39,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11396 Valid, 10825 Invalid, 32647 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9811 Valid, 22832 Invalid, 4 Unknown, 0 Unchecked, 52.8s Time] [2021-11-23 03:56:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37604 states. [2021-11-23 03:56:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37604 to 36781. [2021-11-23 03:56:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36781 states, 20641 states have (on average 1.2637953587519986) internal successors, (26086), 22049 states have internal predecessors, (26086), 12439 states have call successors, (12439), 3724 states have call predecessors, (12439), 3700 states have return successors, (14791), 12061 states have call predecessors, (14791), 12439 states have call successors, (14791) [2021-11-23 03:56:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36781 states to 36781 states and 53316 transitions. [2021-11-23 03:56:42,138 INFO L78 Accepts]: Start accepts. Automaton has 36781 states and 53316 transitions. Word has length 375 [2021-11-23 03:56:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:42,139 INFO L470 AbstractCegarLoop]: Abstraction has 36781 states and 53316 transitions. [2021-11-23 03:56:42,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 8 states have call successors, (74), 3 states have call predecessors, (74), 6 states have return successors, (71), 9 states have call predecessors, (71), 8 states have call successors, (71) [2021-11-23 03:56:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 36781 states and 53316 transitions. [2021-11-23 03:56:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2021-11-23 03:56:42,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:42,217 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 12, 8, 6, 6, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:56:42,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:56:42,217 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:42,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 114474870, now seen corresponding path program 1 times [2021-11-23 03:56:42,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:42,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550564779] [2021-11-23 03:56:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:42,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 952 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2021-11-23 03:56:42,753 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:42,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550564779] [2021-11-23 03:56:42,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550564779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:42,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:42,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:42,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795401268] [2021-11-23 03:56:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:42,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:42,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:42,757 INFO L87 Difference]: Start difference. First operand 36781 states and 53316 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-23 03:56:45,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:47,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:51,012 INFO L93 Difference]: Finished difference Result 65063 states and 94652 transitions. [2021-11-23 03:56:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:56:51,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) Word has length 517 [2021-11-23 03:56:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:51,232 INFO L225 Difference]: With dead ends: 65063 [2021-11-23 03:56:51,232 INFO L226 Difference]: Without dead ends: 36763 [2021-11-23 03:56:51,568 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:56:51,569 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 8 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 5159 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:51,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 5159 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 735 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-23 03:56:51,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36763 states. [2021-11-23 03:56:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36763 to 36741. [2021-11-23 03:56:54,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36741 states, 20618 states have (on average 1.2634106120865263) internal successors, (26049), 22023 states have internal predecessors, (26049), 12426 states have call successors, (12426), 3718 states have call predecessors, (12426), 3696 states have return successors, (14778), 12052 states have call predecessors, (14778), 12426 states have call successors, (14778) [2021-11-23 03:56:54,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36741 states to 36741 states and 53253 transitions. [2021-11-23 03:56:54,281 INFO L78 Accepts]: Start accepts. Automaton has 36741 states and 53253 transitions. Word has length 517 [2021-11-23 03:56:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:54,283 INFO L470 AbstractCegarLoop]: Abstraction has 36741 states and 53253 transitions. [2021-11-23 03:56:54,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (75), 2 states have call predecessors, (75), 1 states have return successors, (73), 2 states have call predecessors, (73), 2 states have call successors, (73) [2021-11-23 03:56:54,283 INFO L276 IsEmpty]: Start isEmpty. Operand 36741 states and 53253 transitions. [2021-11-23 03:56:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2021-11-23 03:56:54,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:54,375 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 14, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:56:54,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:56:54,375 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1956217293, now seen corresponding path program 1 times [2021-11-23 03:56:54,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:54,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539489170] [2021-11-23 03:56:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:54,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1733 trivial. 0 not checked. [2021-11-23 03:56:54,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:54,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539489170] [2021-11-23 03:56:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539489170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:54,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:54,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:54,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944350224] [2021-11-23 03:56:54,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:54,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:54,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:54,932 INFO L87 Difference]: Start difference. First operand 36741 states and 53253 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2021-11-23 03:56:57,286 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:59,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:03,889 INFO L93 Difference]: Finished difference Result 63173 states and 92067 transitions. [2021-11-23 03:57:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:57:03,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 660 [2021-11-23 03:57:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:04,144 INFO L225 Difference]: With dead ends: 63173 [2021-11-23 03:57:04,144 INFO L226 Difference]: Without dead ends: 37965 [2021-11-23 03:57:04,288 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:57:04,289 INFO L933 BasicCegarLoop]: 2784 mSDtfsCounter, 225 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 5405 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:04,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 5405 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 762 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2021-11-23 03:57:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37965 states. [2021-11-23 03:57:06,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37965 to 36743. [2021-11-23 03:57:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36743 states, 20620 states have (on average 1.2633850630455867) internal successors, (26051), 22025 states have internal predecessors, (26051), 12426 states have call successors, (12426), 3718 states have call predecessors, (12426), 3696 states have return successors, (14778), 12052 states have call predecessors, (14778), 12426 states have call successors, (14778) [2021-11-23 03:57:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36743 states to 36743 states and 53255 transitions. [2021-11-23 03:57:07,002 INFO L78 Accepts]: Start accepts. Automaton has 36743 states and 53255 transitions. Word has length 660 [2021-11-23 03:57:07,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:07,003 INFO L470 AbstractCegarLoop]: Abstraction has 36743 states and 53255 transitions. [2021-11-23 03:57:07,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (88), 2 states have call predecessors, (88), 1 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2021-11-23 03:57:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand 36743 states and 53255 transitions. [2021-11-23 03:57:07,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2021-11-23 03:57:07,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:07,125 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 16, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:57:07,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:57:07,126 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:07,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:07,127 INFO L85 PathProgramCache]: Analyzing trace with hash 982181256, now seen corresponding path program 1 times [2021-11-23 03:57:07,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:07,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898982742] [2021-11-23 03:57:07,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:07,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2097 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2096 trivial. 0 not checked. [2021-11-23 03:57:07,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:07,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898982742] [2021-11-23 03:57:07,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898982742] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:57:07,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154709616] [2021-11-23 03:57:07,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:07,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:07,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:57:07,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:57:07,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:57:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:10,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 9466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:57:10,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:57:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2097 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2021-11-23 03:57:11,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:57:11,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154709616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:11,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:57:11,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:57:11,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299363786] [2021-11-23 03:57:11,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:11,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:57:11,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:11,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:57:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:57:11,513 INFO L87 Difference]: Start difference. First operand 36743 states and 53255 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2021-11-23 03:57:13,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:16,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:19,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:21,550 INFO L93 Difference]: Finished difference Result 53745 states and 78687 transitions. [2021-11-23 03:57:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:57:21,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 710 [2021-11-23 03:57:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:21,753 INFO L225 Difference]: With dead ends: 53745 [2021-11-23 03:57:21,754 INFO L226 Difference]: Without dead ends: 36883 [2021-11-23 03:57:21,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:57:21,844 INFO L933 BasicCegarLoop]: 2588 mSDtfsCounter, 3 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5163 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:21,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 5163 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 737 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:57:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36883 states. [2021-11-23 03:57:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36883 to 36763. [2021-11-23 03:57:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36763 states, 20640 states have (on average 1.2631298449612403) internal successors, (26071), 22045 states have internal predecessors, (26071), 12426 states have call successors, (12426), 3718 states have call predecessors, (12426), 3696 states have return successors, (14778), 12052 states have call predecessors, (14778), 12426 states have call successors, (14778) [2021-11-23 03:57:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36763 states to 36763 states and 53275 transitions. [2021-11-23 03:57:24,520 INFO L78 Accepts]: Start accepts. Automaton has 36763 states and 53275 transitions. Word has length 710 [2021-11-23 03:57:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:24,521 INFO L470 AbstractCegarLoop]: Abstraction has 36763 states and 53275 transitions. [2021-11-23 03:57:24,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 2 states have call successors, (90), 2 states have call predecessors, (90), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2021-11-23 03:57:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 36763 states and 53275 transitions. [2021-11-23 03:57:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2021-11-23 03:57:24,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:24,641 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 36, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:24,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:57:24,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:24,864 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:24,864 INFO L85 PathProgramCache]: Analyzing trace with hash -142837996, now seen corresponding path program 1 times [2021-11-23 03:57:24,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:24,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817702726] [2021-11-23 03:57:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:24,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7664 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7663 trivial. 0 not checked. [2021-11-23 03:57:25,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817702726] [2021-11-23 03:57:25,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817702726] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:57:25,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92507069] [2021-11-23 03:57:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:25,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:57:25,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:57:25,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:57:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:28,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 11983 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:57:28,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:57:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7664 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 7350 trivial. 0 not checked. [2021-11-23 03:57:30,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:57:30,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92507069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:30,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:57:30,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-23 03:57:30,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403729673] [2021-11-23 03:57:30,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:30,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:57:30,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:57:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:57:30,381 INFO L87 Difference]: Start difference. First operand 36763 states and 53275 transitions. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 3 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (145), 3 states have call predecessors, (145), 3 states have call successors, (145) [2021-11-23 03:57:33,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:35,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:37,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:40,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:42,016 INFO L93 Difference]: Finished difference Result 50715 states and 73814 transitions. [2021-11-23 03:57:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:57:42,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 3 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (145), 3 states have call predecessors, (145), 3 states have call successors, (145) Word has length 1274 [2021-11-23 03:57:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:42,359 INFO L225 Difference]: With dead ends: 50715 [2021-11-23 03:57:42,359 INFO L226 Difference]: Without dead ends: 37132 [2021-11-23 03:57:42,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:57:42,401 INFO L933 BasicCegarLoop]: 2845 mSDtfsCounter, 165 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 5609 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:42,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 5609 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 906 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-23 03:57:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37132 states. [2021-11-23 03:57:44,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37132 to 36764. [2021-11-23 03:57:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36764 states, 20641 states have (on average 1.2631170970398722) internal successors, (26072), 22046 states have internal predecessors, (26072), 12426 states have call successors, (12426), 3718 states have call predecessors, (12426), 3696 states have return successors, (14778), 12052 states have call predecessors, (14778), 12426 states have call successors, (14778) [2021-11-23 03:57:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36764 states to 36764 states and 53276 transitions. [2021-11-23 03:57:44,848 INFO L78 Accepts]: Start accepts. Automaton has 36764 states and 53276 transitions. Word has length 1274 [2021-11-23 03:57:44,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:44,850 INFO L470 AbstractCegarLoop]: Abstraction has 36764 states and 53276 transitions. [2021-11-23 03:57:44,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 3 states have call successors, (148), 2 states have call predecessors, (148), 2 states have return successors, (145), 3 states have call predecessors, (145), 3 states have call successors, (145) [2021-11-23 03:57:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 36764 states and 53276 transitions. [2021-11-23 03:57:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1735 [2021-11-23 03:57:45,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:45,013 INFO L514 BasicCegarLoop]: trace histogram [67, 67, 56, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:45,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:57:45,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 03:57:45,214 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:45,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1855181873, now seen corresponding path program 1 times [2021-11-23 03:57:45,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:45,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667538963] [2021-11-23 03:57:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:45,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 17536 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17535 trivial. 0 not checked. [2021-11-23 03:57:46,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:46,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667538963] [2021-11-23 03:57:46,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667538963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:57:46,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642897356] [2021-11-23 03:57:46,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:46,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:57:46,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:57:46,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:57:46,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe91107d-90b3-4663-aeff-2c120e6bc844/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:57:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:48,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 14060 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:57:49,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:57:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 17536 backedges. 4970 proven. 1 refuted. 0 times theorem prover too weak. 12565 trivial. 0 not checked. [2021-11-23 03:57:52,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:57:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17536 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17535 trivial. 0 not checked. [2021-11-23 03:57:57,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642897356] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:57:57,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [488817538] [2021-11-23 03:57:57,689 INFO L159 IcfgInterpreter]: Started Sifa with 489 locations of interest [2021-11-23 03:57:57,689 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:57:57,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:57:57,707 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:57:57,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:59:33,870 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 7349 DAG size of output: 7199 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)