./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P --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 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:31:33,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:31:33,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:31:33,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:31:33,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:31:33,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:31:33,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:31:33,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:31:33,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:31:33,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:31:33,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:31:33,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:31:33,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:31:33,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:31:33,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:31:33,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:31:33,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:31:33,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:31:33,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:31:33,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:31:33,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:31:33,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:31:33,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:31:33,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:31:33,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:31:33,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:31:33,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:31:33,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:31:33,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:31:33,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:31:33,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:31:33,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:31:33,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:31:33,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:31:33,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:31:33,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:31:33,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:31:33,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:31:33,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:31:33,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:31:33,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:31:33,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:31:33,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:31:33,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:31:33,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:31:33,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:31:33,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:31:33,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:31:33,341 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:31:33,342 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:31:33,342 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:31:33,342 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:31:33,343 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:31:33,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:31:33,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:31:33,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:31:33,344 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:31:33,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:31:33,345 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:31:33,345 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:31:33,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:31:33,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:31:33,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:31:33,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:31:33,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:31:33,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:31:33,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:31:33,348 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:31:33,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:31:33,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:31:33,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:31:33,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:31:33,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:31:33,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:31:33,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:31:33,351 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:31:33,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:31:33,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:31:33,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:31:33,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:31:33,352 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_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375b130c0dbad771cfaef84781fc161e5ae1fb4f9856cbf4d088e8198a97450e [2021-11-21 00:31:33,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:31:33,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:31:33,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:31:33,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:31:33,680 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:31:33,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-21 00:31:33,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/data/a8a76892d/ef2e6ac3bed6475c925bf6636a32c91b/FLAG05620e41d [2021-11-21 00:31:35,105 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:31:35,106 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-21 00:31:35,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/data/a8a76892d/ef2e6ac3bed6475c925bf6636a32c91b/FLAG05620e41d [2021-11-21 00:31:35,685 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/data/a8a76892d/ef2e6ac3bed6475c925bf6636a32c91b [2021-11-21 00:31:35,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:31:35,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:31:35,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:31:35,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:31:35,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:31:35,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:31:35" (1/1) ... [2021-11-21 00:31:35,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531408ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:35, skipping insertion in model container [2021-11-21 00:31:35,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:31:35" (1/1) ... [2021-11-21 00:31:35,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:31:35,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:31:42,111 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_0271bcd5-4690-445a-8ca1-0f46613760ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466142,466155] [2021-11-21 00:31:42,115 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_0271bcd5-4690-445a-8ca1-0f46613760ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466287,466300] [2021-11-21 00:31:42,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:31:42,217 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:31:42,840 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_0271bcd5-4690-445a-8ca1-0f46613760ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466142,466155] [2021-11-21 00:31:42,840 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_0271bcd5-4690-445a-8ca1-0f46613760ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i[466287,466300] [2021-11-21 00:31:42,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:31:43,329 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:31:43,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43 WrapperNode [2021-11-21 00:31:43,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:31:43,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:31:43,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:31:43,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:31:43,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:43,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:43,816 INFO L137 Inliner]: procedures = 661, calls = 3046, calls flagged for inlining = 319, calls inlined = 257, statements flattened = 6149 [2021-11-21 00:31:43,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:31:43,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:31:43,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:31:43,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:31:43,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:43,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:43,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:43,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:43,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:44,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:44,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:44,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:31:44,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:31:44,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:31:44,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:31:44,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (1/1) ... [2021-11-21 00:31:44,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:31:44,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:31:44,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:31:44,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:31:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:31:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:31:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-21 00:31:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-21 00:31:44,241 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-21 00:31:44,241 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-21 00:31:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 00:31:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 00:31:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-21 00:31:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-21 00:31:44,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:31:44,242 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:31:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-21 00:31:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-21 00:31:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-21 00:31:44,243 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-21 00:31:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-21 00:31:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-21 00:31:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:31:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:31:44,244 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:31:44,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:31:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-21 00:31:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-21 00:31:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-21 00:31:44,245 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-21 00:31:44,245 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-21 00:31:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-21 00:31:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 00:31:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 00:31:44,246 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 00:31:44,246 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 00:31:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:31:44,247 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:31:44,247 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-21 00:31:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-21 00:31:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:31:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:31:44,248 INFO L130 BoogieDeclarations]: Found specification of procedure jme_netpoll [2021-11-21 00:31:44,248 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_netpoll [2021-11-21 00:31:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-21 00:31:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-21 00:31:44,249 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 00:31:44,249 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 00:31:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:31:44,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:31:44,250 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:31:44,251 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:31:44,252 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 00:31:44,252 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 00:31:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 00:31:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 00:31:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 00:31:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:31:44,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:31:44,253 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-21 00:31:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-21 00:31:44,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:31:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 00:31:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 00:31:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-21 00:31:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-21 00:31:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-21 00:31:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-21 00:31:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-21 00:31:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:31:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:31:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-21 00:31:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-21 00:31:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-21 00:31:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-21 00:31:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-21 00:31:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-21 00:31:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:31:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-21 00:31:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-21 00:31:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 00:31:44,259 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 00:31:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:31:44,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:31:44,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:31:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:31:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:31:44,261 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_calibration [2021-11-21 00:31:44,261 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_calibration [2021-11-21 00:31:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:31:44,262 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 00:31:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 00:31:44,263 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-21 00:31:44,263 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-21 00:31:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:31:44,264 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:31:44,264 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-21 00:31:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-21 00:31:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:31:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:31:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:31:44,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:31:44,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:31:44,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:31:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_hi_schedule [2021-11-21 00:31:44,266 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_hi_schedule [2021-11-21 00:31:44,266 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-21 00:31:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-21 00:31:44,267 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 00:31:44,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 00:31:44,268 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-21 00:31:44,268 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-21 00:31:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-21 00:31:44,269 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-21 00:31:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-21 00:31:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-21 00:31:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:31:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:31:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:31:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:31:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:31:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:31:44,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:31:44,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 00:31:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 00:31:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-21 00:31:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-21 00:31:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:31:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:31:44,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:31:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:31:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:31:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:31:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-21 00:31:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-21 00:31:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:31:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:31:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:31:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:31:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-21 00:31:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-21 00:31:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:31:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:31:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 00:31:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 00:31:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:31:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 00:31:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-21 00:31:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-21 00:31:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:31:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:31:44,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:31:44,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:31:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 00:31:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 00:31:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:31:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:31:44,288 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-21 00:31:44,288 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-21 00:31:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-21 00:31:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-21 00:31:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:31:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:31:44,289 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-21 00:31:44,289 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-21 00:31:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-21 00:31:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-21 00:31:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-21 00:31:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-21 00:31:44,290 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-21 00:31:44,290 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-21 00:31:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:31:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:31:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-21 00:31:44,291 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-21 00:31:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:31:44,291 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-21 00:31:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-21 00:31:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:31:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:31:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:31:44,292 INFO L130 BoogieDeclarations]: Found specification of procedure jme_remove_one [2021-11-21 00:31:44,292 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_remove_one [2021-11-21 00:31:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-21 00:31:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-21 00:31:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-21 00:31:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-21 00:31:44,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-21 00:31:44,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-21 00:31:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-21 00:31:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-21 00:31:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 00:31:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 00:31:44,294 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-21 00:31:44,294 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-21 00:31:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure jme_intr_msi [2021-11-21 00:31:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_intr_msi [2021-11-21 00:31:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-21 00:31:44,295 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-21 00:31:44,295 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-21 00:31:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-21 00:31:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-21 00:31:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-21 00:31:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-21 00:31:44,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-21 00:31:44,296 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:31:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:31:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:31:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:31:44,297 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:31:44,297 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:31:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 00:31:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 00:31:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-21 00:31:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-21 00:31:44,298 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-21 00:31:44,298 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-21 00:31:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:31:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:31:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:31:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-21 00:31:44,299 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-21 00:31:44,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_112 [2021-11-21 00:31:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_112 [2021-11-21 00:31:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:31:44,300 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:31:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:31:44,300 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-21 00:31:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-21 00:31:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-21 00:31:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-21 00:31:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-21 00:31:44,301 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-21 00:31:44,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:31:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-21 00:31:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-21 00:31:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:31:44,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:31:44,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 00:31:44,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 00:31:44,304 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:31:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:31:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:31:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:31:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-21 00:31:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-21 00:31:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_103 [2021-11-21 00:31:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_103 [2021-11-21 00:31:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_setEA [2021-11-21 00:31:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_setEA [2021-11-21 00:31:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_105 [2021-11-21 00:31:44,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_105 [2021-11-21 00:31:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-21 00:31:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-21 00:31:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-21 00:31:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-21 00:31:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 00:31:44,314 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 00:31:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-21 00:31:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-21 00:31:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:31:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:31:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:31:44,315 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:31:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_read [2021-11-21 00:31:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_read [2021-11-21 00:31:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-21 00:31:44,316 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-21 00:31:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-21 00:31:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-21 00:31:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-21 00:31:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-21 00:31:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:31:44,317 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:31:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-21 00:31:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-21 00:31:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-21 00:31:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-21 00:31:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:31:44,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:31:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure jme_shutdown [2021-11-21 00:31:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_shutdown [2021-11-21 00:31:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:31:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-21 00:31:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-21 00:31:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-21 00:31:44,319 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-21 00:31:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-21 00:31:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-21 00:31:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:31:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:31:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_113 [2021-11-21 00:31:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_113 [2021-11-21 00:31:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 00:31:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 00:31:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_write [2021-11-21 00:31:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_write [2021-11-21 00:31:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:31:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:31:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-21 00:31:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-21 00:31:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-21 00:31:44,322 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-21 00:31:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-21 00:31:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-21 00:31:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_104 [2021-11-21 00:31:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_104 [2021-11-21 00:31:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_106 [2021-11-21 00:31:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_106 [2021-11-21 00:31:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-21 00:31:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-21 00:31:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-21 00:31:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-21 00:31:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-21 00:31:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-21 00:31:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:31:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:31:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-21 00:31:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-21 00:31:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-21 00:31:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-21 00:31:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-21 00:31:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-21 00:31:44,396 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-21 00:31:44,396 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-21 00:31:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-21 00:31:44,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-21 00:31:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 00:31:44,397 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 00:31:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:31:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-21 00:31:44,397 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-21 00:31:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:31:44,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:31:44,397 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-21 00:31:44,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-21 00:31:44,398 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-21 00:31:44,398 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-21 00:31:45,613 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:31:45,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:31:46,148 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:31:53,823 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:31:54,027 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:31:56,076 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:31:56,076 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 00:31:56,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:31:56 BoogieIcfgContainer [2021-11-21 00:31:56,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:31:56,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:31:56,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:31:56,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:31:56,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:31:35" (1/3) ... [2021-11-21 00:31:56,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6a507c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:31:56, skipping insertion in model container [2021-11-21 00:31:56,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:31:43" (2/3) ... [2021-11-21 00:31:56,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f6a507c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:31:56, skipping insertion in model container [2021-11-21 00:31:56,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:31:56" (3/3) ... [2021-11-21 00:31:56,095 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-21 00:31:56,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:31:56,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:31:56,190 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:31:56,208 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 [2021-11-21 00:31:56,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:31:56,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 2080 states, 1184 states have (on average 1.3006756756756757) internal successors, (1540), 1233 states have internal predecessors, (1540), 742 states have call successors, (742), 158 states have call predecessors, (742), 157 states have return successors, (733), 717 states have call predecessors, (733), 733 states have call successors, (733) [2021-11-21 00:31:56,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-21 00:31:56,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:56,354 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:31:56,354 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:56,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2113783906, now seen corresponding path program 1 times [2021-11-21 00:31:56,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:56,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176440841] [2021-11-21 00:31:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:56,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1260 trivial. 0 not checked. [2021-11-21 00:31:57,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:57,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176440841] [2021-11-21 00:31:57,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176440841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:57,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:57,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:57,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897530427] [2021-11-21 00:31:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:57,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:57,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:57,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:57,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:57,272 INFO L87 Difference]: Start difference. First operand has 2080 states, 1184 states have (on average 1.3006756756756757) internal successors, (1540), 1233 states have internal predecessors, (1540), 742 states have call successors, (742), 158 states have call predecessors, (742), 157 states have return successors, (733), 717 states have call predecessors, (733), 733 states have call successors, (733) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:32:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:01,288 INFO L93 Difference]: Finished difference Result 5611 states and 8180 transitions. [2021-11-21 00:32:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:01,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 234 [2021-11-21 00:32:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:01,354 INFO L225 Difference]: With dead ends: 5611 [2021-11-21 00:32:01,354 INFO L226 Difference]: Without dead ends: 3493 [2021-11-21 00:32:01,376 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 [2021-11-21 00:32:01,381 INFO L933 BasicCegarLoop]: 3120 mSDtfsCounter, 2171 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:01,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2171 Valid, 5624 Invalid, 891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:32:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2021-11-21 00:32:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 3491. [2021-11-21 00:32:01,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 1984 states have (on average 1.2857862903225807) internal successors, (2551), 2069 states have internal predecessors, (2551), 1222 states have call successors, (1222), 285 states have call predecessors, (1222), 284 states have return successors, (1223), 1188 states have call predecessors, (1223), 1222 states have call successors, (1223) [2021-11-21 00:32:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 4996 transitions. [2021-11-21 00:32:01,825 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 4996 transitions. Word has length 234 [2021-11-21 00:32:01,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:01,833 INFO L470 AbstractCegarLoop]: Abstraction has 3491 states and 4996 transitions. [2021-11-21 00:32:01,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:32:01,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 4996 transitions. [2021-11-21 00:32:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1301 [2021-11-21 00:32:01,948 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:01,950 INFO L514 BasicCegarLoop]: trace histogram [56, 43, 28, 27, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:01,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:32:01,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash 443196036, now seen corresponding path program 1 times [2021-11-21 00:32:01,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:01,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795840384] [2021-11-21 00:32:01,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:01,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9864 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9859 trivial. 0 not checked. [2021-11-21 00:32:03,538 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:03,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795840384] [2021-11-21 00:32:03,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795840384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:03,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:03,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:03,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421448408] [2021-11-21 00:32:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:03,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:03,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:03,549 INFO L87 Difference]: Start difference. First operand 3491 states and 4996 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 3 states have call successors, (152), 2 states have call predecessors, (152), 1 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2021-11-21 00:32:08,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:08,312 INFO L93 Difference]: Finished difference Result 9859 states and 14082 transitions. [2021-11-21 00:32:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:08,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 3 states have call successors, (152), 2 states have call predecessors, (152), 1 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) Word has length 1300 [2021-11-21 00:32:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:08,404 INFO L225 Difference]: With dead ends: 9859 [2021-11-21 00:32:08,404 INFO L226 Difference]: Without dead ends: 6405 [2021-11-21 00:32:08,435 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 [2021-11-21 00:32:08,441 INFO L933 BasicCegarLoop]: 3613 mSDtfsCounter, 2433 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 6071 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:08,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2433 Valid, 6071 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-21 00:32:08,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-11-21 00:32:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 6401. [2021-11-21 00:32:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6401 states, 3646 states have (on average 1.281404278661547) internal successors, (4672), 3803 states have internal predecessors, (4672), 2217 states have call successors, (2217), 539 states have call predecessors, (2217), 537 states have return successors, (2219), 2153 states have call predecessors, (2219), 2217 states have call successors, (2219) [2021-11-21 00:32:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6401 states to 6401 states and 9108 transitions. [2021-11-21 00:32:09,026 INFO L78 Accepts]: Start accepts. Automaton has 6401 states and 9108 transitions. Word has length 1300 [2021-11-21 00:32:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:09,027 INFO L470 AbstractCegarLoop]: Abstraction has 6401 states and 9108 transitions. [2021-11-21 00:32:09,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 3 states have call successors, (152), 2 states have call predecessors, (152), 1 states have return successors, (151), 3 states have call predecessors, (151), 3 states have call successors, (151) [2021-11-21 00:32:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 6401 states and 9108 transitions. [2021-11-21 00:32:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2021-11-21 00:32:09,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:09,213 INFO L514 BasicCegarLoop]: trace histogram [56, 43, 30, 28, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:09,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:32:09,214 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1284700483, now seen corresponding path program 1 times [2021-11-21 00:32:09,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:09,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354754251] [2021-11-21 00:32:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:09,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10192 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10181 trivial. 0 not checked. [2021-11-21 00:32:10,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:10,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354754251] [2021-11-21 00:32:10,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354754251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:10,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:10,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:10,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297831] [2021-11-21 00:32:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:10,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:10,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:10,077 INFO L87 Difference]: Start difference. First operand 6401 states and 9108 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 3 states have call successors, (159), 2 states have call predecessors, (159), 1 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2021-11-21 00:32:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:14,376 INFO L93 Difference]: Finished difference Result 15677 states and 22304 transitions. [2021-11-21 00:32:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:14,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 3 states have call successors, (159), 2 states have call predecessors, (159), 1 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) Word has length 1347 [2021-11-21 00:32:14,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:14,488 INFO L225 Difference]: With dead ends: 15677 [2021-11-21 00:32:14,488 INFO L226 Difference]: Without dead ends: 9313 [2021-11-21 00:32:14,624 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 [2021-11-21 00:32:14,633 INFO L933 BasicCegarLoop]: 4562 mSDtfsCounter, 2434 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 7012 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:14,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2434 Valid, 7012 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-21 00:32:14,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2021-11-21 00:32:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 9309. [2021-11-21 00:32:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9309 states, 5306 states have (on average 1.2798718431963814) internal successors, (6791), 5535 states have internal predecessors, (6791), 3212 states have call successors, (3212), 793 states have call predecessors, (3212), 790 states have return successors, (3215), 3118 states have call predecessors, (3215), 3212 states have call successors, (3215) [2021-11-21 00:32:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9309 states to 9309 states and 13218 transitions. [2021-11-21 00:32:15,338 INFO L78 Accepts]: Start accepts. Automaton has 9309 states and 13218 transitions. Word has length 1347 [2021-11-21 00:32:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:15,341 INFO L470 AbstractCegarLoop]: Abstraction has 9309 states and 13218 transitions. [2021-11-21 00:32:15,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 3 states have call successors, (159), 2 states have call predecessors, (159), 1 states have return successors, (158), 3 states have call predecessors, (158), 3 states have call successors, (158) [2021-11-21 00:32:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9309 states and 13218 transitions. [2021-11-21 00:32:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2021-11-21 00:32:15,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:15,424 INFO L514 BasicCegarLoop]: trace histogram [56, 43, 32, 28, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:15,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:32:15,425 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash 471149890, now seen corresponding path program 1 times [2021-11-21 00:32:15,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:15,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157304810] [2021-11-21 00:32:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:15,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 10554 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10540 trivial. 0 not checked. [2021-11-21 00:32:16,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:16,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157304810] [2021-11-21 00:32:16,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157304810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:16,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:16,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:32:16,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26607263] [2021-11-21 00:32:16,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:16,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:32:16,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:32:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:32:16,631 INFO L87 Difference]: Start difference. First operand 9309 states and 13218 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 2 states have call successors, (164), 2 states have call predecessors, (164), 1 states have return successors, (163), 2 states have call predecessors, (163), 2 states have call successors, (163) [2021-11-21 00:32:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:24,212 INFO L93 Difference]: Finished difference Result 26643 states and 39215 transitions. [2021-11-21 00:32:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:32:24,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 2 states have call successors, (164), 2 states have call predecessors, (164), 1 states have return successors, (163), 2 states have call predecessors, (163), 2 states have call successors, (163) Word has length 1409 [2021-11-21 00:32:24,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:24,370 INFO L225 Difference]: With dead ends: 26643 [2021-11-21 00:32:24,371 INFO L226 Difference]: Without dead ends: 17371 [2021-11-21 00:32:24,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:32:24,447 INFO L933 BasicCegarLoop]: 4281 mSDtfsCounter, 1991 mSDsluCounter, 8232 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 11323 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:24,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2442 Valid, 11323 Invalid, 2404 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [453 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-21 00:32:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17371 states. [2021-11-21 00:32:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17371 to 9313. [2021-11-21 00:32:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9313 states, 5310 states have (on average 1.2796610169491525) internal successors, (6795), 5539 states have internal predecessors, (6795), 3212 states have call successors, (3212), 793 states have call predecessors, (3212), 790 states have return successors, (3215), 3118 states have call predecessors, (3215), 3212 states have call successors, (3215) [2021-11-21 00:32:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9313 states to 9313 states and 13222 transitions. [2021-11-21 00:32:25,556 INFO L78 Accepts]: Start accepts. Automaton has 9313 states and 13222 transitions. Word has length 1409 [2021-11-21 00:32:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:25,567 INFO L470 AbstractCegarLoop]: Abstraction has 9313 states and 13222 transitions. [2021-11-21 00:32:25,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 2 states have call successors, (164), 2 states have call predecessors, (164), 1 states have return successors, (163), 2 states have call predecessors, (163), 2 states have call successors, (163) [2021-11-21 00:32:25,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9313 states and 13222 transitions. [2021-11-21 00:32:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1412 [2021-11-21 00:32:25,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:25,649 INFO L514 BasicCegarLoop]: trace histogram [56, 43, 32, 28, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:25,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:32:25,650 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1913309069, now seen corresponding path program 1 times [2021-11-21 00:32:25,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:25,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753004286] [2021-11-21 00:32:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:25,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10554 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10540 trivial. 0 not checked. [2021-11-21 00:32:27,035 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:27,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753004286] [2021-11-21 00:32:27,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753004286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:27,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:27,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:27,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801930691] [2021-11-21 00:32:27,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:27,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:27,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:27,041 INFO L87 Difference]: Start difference. First operand 9313 states and 13222 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 3 states have call successors, (165), 2 states have call predecessors, (165), 1 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2021-11-21 00:32:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:29,434 INFO L93 Difference]: Finished difference Result 18581 states and 26375 transitions. [2021-11-21 00:32:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:29,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 3 states have call successors, (165), 2 states have call predecessors, (165), 1 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) Word has length 1411 [2021-11-21 00:32:29,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:29,497 INFO L225 Difference]: With dead ends: 18581 [2021-11-21 00:32:29,498 INFO L226 Difference]: Without dead ends: 9305 [2021-11-21 00:32:29,546 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 [2021-11-21 00:32:29,547 INFO L933 BasicCegarLoop]: 2482 mSDtfsCounter, 2780 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:29,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2482 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-21 00:32:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2021-11-21 00:32:30,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 9305. [2021-11-21 00:32:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9305 states, 5306 states have (on average 1.2791179796456842) internal successors, (6787), 5531 states have internal predecessors, (6787), 3208 states have call successors, (3208), 793 states have call predecessors, (3208), 790 states have return successors, (3211), 3116 states have call predecessors, (3211), 3208 states have call successors, (3211) [2021-11-21 00:32:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9305 states to 9305 states and 13206 transitions. [2021-11-21 00:32:30,294 INFO L78 Accepts]: Start accepts. Automaton has 9305 states and 13206 transitions. Word has length 1411 [2021-11-21 00:32:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:30,296 INFO L470 AbstractCegarLoop]: Abstraction has 9305 states and 13206 transitions. [2021-11-21 00:32:30,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 3 states have call successors, (165), 2 states have call predecessors, (165), 1 states have return successors, (164), 3 states have call predecessors, (164), 3 states have call successors, (164) [2021-11-21 00:32:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 9305 states and 13206 transitions. [2021-11-21 00:32:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1438 [2021-11-21 00:32:30,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:30,368 INFO L514 BasicCegarLoop]: trace histogram [58, 45, 32, 29, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:30,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:32:30,368 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 252991769, now seen corresponding path program 1 times [2021-11-21 00:32:30,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:30,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996804659] [2021-11-21 00:32:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:30,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:31,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11196 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 11179 trivial. 0 not checked. [2021-11-21 00:32:31,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:31,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996804659] [2021-11-21 00:32:31,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996804659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:32:31,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786520992] [2021-11-21 00:32:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:31,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:31,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:32:31,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:32:31,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:32:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:34,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 9732 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:32:34,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:32:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11196 backedges. 2256 proven. 0 refuted. 0 times theorem prover too weak. 8940 trivial. 0 not checked. [2021-11-21 00:32:37,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:32:37,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786520992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:37,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:32:37,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2021-11-21 00:32:37,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804633695] [2021-11-21 00:32:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:37,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:37,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:37,287 INFO L87 Difference]: Start difference. First operand 9305 states and 13206 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (178), 2 states have call predecessors, (178), 2 states have return successors, (177), 2 states have call predecessors, (177), 2 states have call successors, (177) [2021-11-21 00:32:40,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:40,441 INFO L93 Difference]: Finished difference Result 18615 states and 26934 transitions. [2021-11-21 00:32:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:40,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (178), 2 states have call predecessors, (178), 2 states have return successors, (177), 2 states have call predecessors, (177), 2 states have call successors, (177) Word has length 1437 [2021-11-21 00:32:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:40,507 INFO L225 Difference]: With dead ends: 18615 [2021-11-21 00:32:40,507 INFO L226 Difference]: Without dead ends: 9347 [2021-11-21 00:32:40,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1439 GetRequests, 1438 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:40,557 INFO L933 BasicCegarLoop]: 2483 mSDtfsCounter, 4 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:40,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4961 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 00:32:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9347 states. [2021-11-21 00:32:41,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9347 to 9311. [2021-11-21 00:32:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9311 states, 5312 states have (on average 1.2788027108433735) internal successors, (6793), 5537 states have internal predecessors, (6793), 3208 states have call successors, (3208), 793 states have call predecessors, (3208), 790 states have return successors, (3211), 3116 states have call predecessors, (3211), 3208 states have call successors, (3211) [2021-11-21 00:32:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9311 states to 9311 states and 13212 transitions. [2021-11-21 00:32:41,399 INFO L78 Accepts]: Start accepts. Automaton has 9311 states and 13212 transitions. Word has length 1437 [2021-11-21 00:32:41,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:41,403 INFO L470 AbstractCegarLoop]: Abstraction has 9311 states and 13212 transitions. [2021-11-21 00:32:41,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 2 states have call successors, (178), 2 states have call predecessors, (178), 2 states have return successors, (177), 2 states have call predecessors, (177), 2 states have call successors, (177) [2021-11-21 00:32:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 9311 states and 13212 transitions. [2021-11-21 00:32:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2021-11-21 00:32:41,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:41,457 INFO L514 BasicCegarLoop]: trace histogram [58, 47, 32, 29, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:41,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:32:41,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:32:41,673 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 382791337, now seen corresponding path program 1 times [2021-11-21 00:32:41,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:41,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124700814] [2021-11-21 00:32:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:41,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:42,891 INFO L134 CoverageAnalysis]: Checked inductivity of 11448 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11434 trivial. 0 not checked. [2021-11-21 00:32:42,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:42,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124700814] [2021-11-21 00:32:42,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124700814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:42,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:42,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:42,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558101824] [2021-11-21 00:32:42,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:42,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:42,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:42,897 INFO L87 Difference]: Start difference. First operand 9311 states and 13212 transitions. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 2 states have call successors, (169), 2 states have call predecessors, (169), 2 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) [2021-11-21 00:32:46,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:46,420 INFO L93 Difference]: Finished difference Result 18675 states and 26990 transitions. [2021-11-21 00:32:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:46,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 2 states have call successors, (169), 2 states have call predecessors, (169), 2 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) Word has length 1461 [2021-11-21 00:32:46,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:46,482 INFO L225 Difference]: With dead ends: 18675 [2021-11-21 00:32:46,482 INFO L226 Difference]: Without dead ends: 9401 [2021-11-21 00:32:46,525 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 [2021-11-21 00:32:46,527 INFO L933 BasicCegarLoop]: 2491 mSDtfsCounter, 9 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4970 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:46,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 4970 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:32:46,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9401 states. [2021-11-21 00:32:47,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9401 to 9347. [2021-11-21 00:32:47,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9347 states, 5336 states have (on average 1.2786731634182908) internal successors, (6823), 5561 states have internal predecessors, (6823), 3220 states have call successors, (3220), 793 states have call predecessors, (3220), 790 states have return successors, (3223), 3128 states have call predecessors, (3223), 3220 states have call successors, (3223) [2021-11-21 00:32:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9347 states to 9347 states and 13266 transitions. [2021-11-21 00:32:47,253 INFO L78 Accepts]: Start accepts. Automaton has 9347 states and 13266 transitions. Word has length 1461 [2021-11-21 00:32:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:47,255 INFO L470 AbstractCegarLoop]: Abstraction has 9347 states and 13266 transitions. [2021-11-21 00:32:47,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 2 states have call successors, (169), 2 states have call predecessors, (169), 2 states have return successors, (168), 2 states have call predecessors, (168), 2 states have call successors, (168) [2021-11-21 00:32:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9347 states and 13266 transitions. [2021-11-21 00:32:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1475 [2021-11-21 00:32:47,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:47,413 INFO L514 BasicCegarLoop]: trace histogram [58, 48, 32, 29, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 7, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:47,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:32:47,414 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:47,415 INFO L85 PathProgramCache]: Analyzing trace with hash 766831360, now seen corresponding path program 1 times [2021-11-21 00:32:47,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:47,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50979935] [2021-11-21 00:32:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:47,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11584 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11570 trivial. 0 not checked. [2021-11-21 00:32:48,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:48,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50979935] [2021-11-21 00:32:48,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50979935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:48,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:48,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:48,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317347177] [2021-11-21 00:32:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:48,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:48,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:48,578 INFO L87 Difference]: Start difference. First operand 9347 states and 13266 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 2 states have call successors, (171), 2 states have call predecessors, (171), 2 states have return successors, (170), 2 states have call predecessors, (170), 2 states have call successors, (170) [2021-11-21 00:32:51,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:32:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:53,505 INFO L93 Difference]: Finished difference Result 18711 states and 26743 transitions. [2021-11-21 00:32:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 2 states have call successors, (171), 2 states have call predecessors, (171), 2 states have return successors, (170), 2 states have call predecessors, (170), 2 states have call successors, (170) Word has length 1474 [2021-11-21 00:32:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:53,576 INFO L225 Difference]: With dead ends: 18711 [2021-11-21 00:32:53,576 INFO L226 Difference]: Without dead ends: 9401 [2021-11-21 00:32:53,623 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 [2021-11-21 00:32:53,624 INFO L933 BasicCegarLoop]: 2487 mSDtfsCounter, 5 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:53,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 4968 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 830 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 00:32:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9401 states. [2021-11-21 00:32:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9401 to 9353. [2021-11-21 00:32:54,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9353 states, 5342 states have (on average 1.27836016473231) internal successors, (6829), 5567 states have internal predecessors, (6829), 3220 states have call successors, (3220), 793 states have call predecessors, (3220), 790 states have return successors, (3223), 3128 states have call predecessors, (3223), 3220 states have call successors, (3223) [2021-11-21 00:32:54,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9353 states to 9353 states and 13272 transitions. [2021-11-21 00:32:54,653 INFO L78 Accepts]: Start accepts. Automaton has 9353 states and 13272 transitions. Word has length 1474 [2021-11-21 00:32:54,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:54,655 INFO L470 AbstractCegarLoop]: Abstraction has 9353 states and 13272 transitions. [2021-11-21 00:32:54,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 2 states have call successors, (171), 2 states have call predecessors, (171), 2 states have return successors, (170), 2 states have call predecessors, (170), 2 states have call successors, (170) [2021-11-21 00:32:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 9353 states and 13272 transitions. [2021-11-21 00:32:54,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1516 [2021-11-21 00:32:54,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:32:54,715 INFO L514 BasicCegarLoop]: trace histogram [62, 50, 32, 31, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 7, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:32:54,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:32:54,716 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:32:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:32:54,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1846934192, now seen corresponding path program 1 times [2021-11-21 00:32:54,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:32:54,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030325762] [2021-11-21 00:32:54,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:32:54,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:32:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:32:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 12743 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12728 trivial. 0 not checked. [2021-11-21 00:32:56,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:32:56,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030325762] [2021-11-21 00:32:56,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030325762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:32:56,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:32:56,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:32:56,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082432054] [2021-11-21 00:32:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:32:56,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:32:56,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:32:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:32:56,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:32:56,063 INFO L87 Difference]: Start difference. First operand 9353 states and 13272 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 2 states have call successors, (173), 2 states have call predecessors, (173), 2 states have return successors, (172), 2 states have call predecessors, (172), 2 states have call successors, (172) [2021-11-21 00:32:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:32:58,912 INFO L93 Difference]: Finished difference Result 18699 states and 26713 transitions. [2021-11-21 00:32:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:32:58,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 2 states have call successors, (173), 2 states have call predecessors, (173), 2 states have return successors, (172), 2 states have call predecessors, (172), 2 states have call successors, (172) Word has length 1515 [2021-11-21 00:32:58,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:32:58,978 INFO L225 Difference]: With dead ends: 18699 [2021-11-21 00:32:58,978 INFO L226 Difference]: Without dead ends: 9383 [2021-11-21 00:32:59,021 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 [2021-11-21 00:32:59,022 INFO L933 BasicCegarLoop]: 2482 mSDtfsCounter, 2 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4961 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:32:59,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4961 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-21 00:32:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9383 states. [2021-11-21 00:32:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9383 to 9359. [2021-11-21 00:32:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9359 states, 5348 states have (on average 1.2780478683620045) internal successors, (6835), 5573 states have internal predecessors, (6835), 3220 states have call successors, (3220), 793 states have call predecessors, (3220), 790 states have return successors, (3223), 3128 states have call predecessors, (3223), 3220 states have call successors, (3223) [2021-11-21 00:32:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 13278 transitions. [2021-11-21 00:32:59,857 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 13278 transitions. Word has length 1515 [2021-11-21 00:32:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:32:59,860 INFO L470 AbstractCegarLoop]: Abstraction has 9359 states and 13278 transitions. [2021-11-21 00:32:59,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 2 states have call successors, (173), 2 states have call predecessors, (173), 2 states have return successors, (172), 2 states have call predecessors, (172), 2 states have call successors, (172) [2021-11-21 00:32:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 13278 transitions. [2021-11-21 00:33:00,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1557 [2021-11-21 00:33:00,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:00,073 INFO L514 BasicCegarLoop]: trace histogram [66, 52, 33, 32, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 7, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:00,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:33:00,073 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:00,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1535104100, now seen corresponding path program 1 times [2021-11-21 00:33:00,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:00,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913010261] [2021-11-21 00:33:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:00,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:01,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13990 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 13974 trivial. 0 not checked. [2021-11-21 00:33:01,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:01,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913010261] [2021-11-21 00:33:01,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913010261] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:33:01,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250958216] [2021-11-21 00:33:01,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:01,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:01,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:01,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:01,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:33:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:03,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 10368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:33:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 13990 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 13780 trivial. 0 not checked. [2021-11-21 00:33:06,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:33:06,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250958216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:06,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:33:06,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:33:06,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313233821] [2021-11-21 00:33:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:33:06,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:33:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:06,671 INFO L87 Difference]: Start difference. First operand 9359 states and 13278 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 3 states have call successors, (176), 3 states have call predecessors, (176), 3 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) [2021-11-21 00:33:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:10,379 INFO L93 Difference]: Finished difference Result 22637 states and 32123 transitions. [2021-11-21 00:33:10,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:33:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 3 states have call successors, (176), 3 states have call predecessors, (176), 3 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) Word has length 1556 [2021-11-21 00:33:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:10,555 INFO L225 Difference]: With dead ends: 22637 [2021-11-21 00:33:10,556 INFO L226 Difference]: Without dead ends: 13315 [2021-11-21 00:33:10,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1559 GetRequests, 1556 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:10,598 INFO L933 BasicCegarLoop]: 4244 mSDtfsCounter, 2185 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 6590 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:10,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 6590 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 00:33:10,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13315 states. [2021-11-21 00:33:11,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13315 to 13311. [2021-11-21 00:33:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13311 states, 7608 states have (on average 1.2718191377497372) internal successors, (9676), 7937 states have internal predecessors, (9676), 4565 states have call successors, (4565), 1143 states have call predecessors, (4565), 1137 states have return successors, (4571), 4426 states have call predecessors, (4571), 4565 states have call successors, (4571) [2021-11-21 00:33:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13311 states to 13311 states and 18812 transitions. [2021-11-21 00:33:11,387 INFO L78 Accepts]: Start accepts. Automaton has 13311 states and 18812 transitions. Word has length 1556 [2021-11-21 00:33:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:11,390 INFO L470 AbstractCegarLoop]: Abstraction has 13311 states and 18812 transitions. [2021-11-21 00:33:11,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 3 states have call successors, (176), 3 states have call predecessors, (176), 3 states have return successors, (175), 3 states have call predecessors, (175), 3 states have call successors, (175) [2021-11-21 00:33:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 13311 states and 18812 transitions. [2021-11-21 00:33:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1577 [2021-11-21 00:33:11,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:11,457 INFO L514 BasicCegarLoop]: trace histogram [66, 52, 34, 33, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:11,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:11,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 00:33:11,673 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:11,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1449754364, now seen corresponding path program 1 times [2021-11-21 00:33:11,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:11,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117320757] [2021-11-21 00:33:11,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:11,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14140 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 14111 trivial. 0 not checked. [2021-11-21 00:33:12,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117320757] [2021-11-21 00:33:12,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117320757] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:33:12,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061512440] [2021-11-21 00:33:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:12,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:12,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:12,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:12,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:33:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:15,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 10429 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:33:15,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 14140 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 13782 trivial. 0 not checked. [2021-11-21 00:33:17,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:33:17,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061512440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:17,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:33:17,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:33:17,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974170023] [2021-11-21 00:33:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:17,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:33:17,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:17,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:33:17,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:17,948 INFO L87 Difference]: Start difference. First operand 13311 states and 18812 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 3 states have call successors, (179), 3 states have call predecessors, (179), 3 states have return successors, (178), 3 states have call predecessors, (178), 3 states have call successors, (178) [2021-11-21 00:33:19,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:22,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:22,301 INFO L93 Difference]: Finished difference Result 31749 states and 44685 transitions. [2021-11-21 00:33:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:33:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 3 states have call successors, (179), 3 states have call predecessors, (179), 3 states have return successors, (178), 3 states have call predecessors, (178), 3 states have call successors, (178) Word has length 1576 [2021-11-21 00:33:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:22,407 INFO L225 Difference]: With dead ends: 31749 [2021-11-21 00:33:22,407 INFO L226 Difference]: Without dead ends: 18475 [2021-11-21 00:33:22,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:22,469 INFO L933 BasicCegarLoop]: 2980 mSDtfsCounter, 2750 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2750 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:22,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2750 Valid, 4875 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-21 00:33:22,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18475 states. [2021-11-21 00:33:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18475 to 18471. [2021-11-21 00:33:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18471 states, 10544 states have (on average 1.2687784522003034) internal successors, (13378), 11025 states have internal predecessors, (13378), 6264 states have call successors, (6264), 1671 states have call predecessors, (6264), 1662 states have return successors, (6273), 6060 states have call predecessors, (6273), 6264 states have call successors, (6273) [2021-11-21 00:33:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18471 states to 18471 states and 25915 transitions. [2021-11-21 00:33:23,730 INFO L78 Accepts]: Start accepts. Automaton has 18471 states and 25915 transitions. Word has length 1576 [2021-11-21 00:33:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:23,733 INFO L470 AbstractCegarLoop]: Abstraction has 18471 states and 25915 transitions. [2021-11-21 00:33:23,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 3 states have call successors, (179), 3 states have call predecessors, (179), 3 states have return successors, (178), 3 states have call predecessors, (178), 3 states have call successors, (178) [2021-11-21 00:33:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 18471 states and 25915 transitions. [2021-11-21 00:33:23,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1579 [2021-11-21 00:33:23,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:23,991 INFO L514 BasicCegarLoop]: trace histogram [66, 52, 34, 33, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:24,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-21 00:33:24,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 00:33:24,217 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash -57374553, now seen corresponding path program 1 times [2021-11-21 00:33:24,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:24,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263095454] [2021-11-21 00:33:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:24,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14142 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2021-11-21 00:33:25,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:25,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263095454] [2021-11-21 00:33:25,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263095454] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:33:25,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126691833] [2021-11-21 00:33:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:25,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:25,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:25,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:25,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:33:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:27,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 10431 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:33:27,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14142 trivial. 0 not checked. [2021-11-21 00:33:30,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:33:30,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126691833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:33:30,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:33:30,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-21 00:33:30,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373777181] [2021-11-21 00:33:30,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:33:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:33:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:33:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:33:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:30,382 INFO L87 Difference]: Start difference. First operand 18471 states and 25915 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 2 states have call successors, (176), 2 states have call predecessors, (176), 2 states have return successors, (175), 2 states have call predecessors, (175), 2 states have call successors, (175) [2021-11-21 00:33:34,978 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:33:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:33:35,200 INFO L93 Difference]: Finished difference Result 40557 states and 57548 transitions. [2021-11-21 00:33:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:33:35,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 2 states have call successors, (176), 2 states have call predecessors, (176), 2 states have return successors, (175), 2 states have call predecessors, (175), 2 states have call successors, (175) Word has length 1578 [2021-11-21 00:33:35,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:33:35,309 INFO L225 Difference]: With dead ends: 40557 [2021-11-21 00:33:35,310 INFO L226 Difference]: Without dead ends: 22123 [2021-11-21 00:33:35,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:33:35,483 INFO L933 BasicCegarLoop]: 3325 mSDtfsCounter, 636 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 6009 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:33:35,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 6009 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1006 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-21 00:33:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22123 states. [2021-11-21 00:33:36,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22123 to 18474. [2021-11-21 00:33:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18474 states, 10547 states have (on average 1.268702000568882) internal successors, (13381), 11028 states have internal predecessors, (13381), 6264 states have call successors, (6264), 1671 states have call predecessors, (6264), 1662 states have return successors, (6273), 6060 states have call predecessors, (6273), 6264 states have call successors, (6273) [2021-11-21 00:33:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18474 states to 18474 states and 25918 transitions. [2021-11-21 00:33:36,499 INFO L78 Accepts]: Start accepts. Automaton has 18474 states and 25918 transitions. Word has length 1578 [2021-11-21 00:33:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:33:36,501 INFO L470 AbstractCegarLoop]: Abstraction has 18474 states and 25918 transitions. [2021-11-21 00:33:36,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 2 states have call successors, (176), 2 states have call predecessors, (176), 2 states have return successors, (175), 2 states have call predecessors, (175), 2 states have call successors, (175) [2021-11-21 00:33:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 18474 states and 25918 transitions. [2021-11-21 00:33:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2021-11-21 00:33:36,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:33:36,540 INFO L514 BasicCegarLoop]: trace histogram [66, 52, 34, 33, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 20, 20, 20, 20, 20, 20, 19, 19, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:33:36,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:33:36,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 00:33:36,741 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:33:36,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:33:36,742 INFO L85 PathProgramCache]: Analyzing trace with hash -101724608, now seen corresponding path program 1 times [2021-11-21 00:33:36,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:33:36,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077088510] [2021-11-21 00:33:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:36,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:33:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 14121 trivial. 0 not checked. [2021-11-21 00:33:37,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:33:37,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077088510] [2021-11-21 00:33:37,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077088510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:33:37,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004885103] [2021-11-21 00:33:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:33:37,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:33:37,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:37,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:33:37,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271bcd5-4690-445a-8ca1-0f46613760ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:33:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:33:39,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 10465 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:33:39,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:33:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 2260 proven. 1 refuted. 0 times theorem prover too weak. 11889 trivial. 0 not checked. [2021-11-21 00:33:42,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:33:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 14121 trivial. 0 not checked. [2021-11-21 00:33:46,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004885103] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:33:46,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [63317906] [2021-11-21 00:33:46,097 INFO L159 IcfgInterpreter]: Started Sifa with 538 locations of interest [2021-11-21 00:33:46,097 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:33:46,105 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:33:46,115 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:33:46,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs