./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-irda-via-ircc.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_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/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_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/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_040bd6bc-235b-470b-89d9-64aa825c65ac/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 c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:27:59,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:27:59,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:28:00,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:28:00,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:28:00,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:28:00,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:28:00,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:28:00,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:28:00,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:28:00,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:28:00,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:28:00,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:28:00,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:28:00,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:28:00,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:28:00,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:28:00,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:28:00,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:28:00,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:28:00,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:28:00,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:28:00,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:28:00,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:28:00,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:28:00,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:28:00,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:28:00,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:28:00,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:28:00,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:28:00,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:28:00,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:28:00,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:28:00,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:28:00,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:28:00,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:28:00,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:28:00,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:28:00,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:28:00,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:28:00,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:28:00,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:28:00,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:28:00,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:28:00,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:28:00,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:28:00,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:28:00,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:28:00,130 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:28:00,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:28:00,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:28:00,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:28:00,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:28:00,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:28:00,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:28:00,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:28:00,132 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:28:00,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:28:00,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:28:00,133 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:28:00,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:28:00,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:28:00,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:28:00,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:28:00,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:28:00,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:28:00,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:28:00,135 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:28:00,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:28:00,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:28:00,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:28:00,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:28:00,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:28:00,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:28:00,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:28:00,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:28:00,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:28:00,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:28:00,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:28:00,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:28:00,138 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_040bd6bc-235b-470b-89d9-64aa825c65ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c727ee56ff8cf558c3dc08b64ebc267261ea17bdfb88e50734daf71ad89adc7d [2021-11-21 00:28:00,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:28:00,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:28:00,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:28:00,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:28:00,497 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:28:00,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-21 00:28:00,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/data/6fe6f425a/6018ca004e844fe3a76af81f3086b884/FLAG6a03302f2 [2021-11-21 00:28:01,485 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:28:01,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-21 00:28:01,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/data/6fe6f425a/6018ca004e844fe3a76af81f3086b884/FLAG6a03302f2 [2021-11-21 00:28:01,938 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/data/6fe6f425a/6018ca004e844fe3a76af81f3086b884 [2021-11-21 00:28:01,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:28:01,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:28:01,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:28:01,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:28:01,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:28:01,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:28:01" (1/1) ... [2021-11-21 00:28:01,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bf548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:01, skipping insertion in model container [2021-11-21 00:28:01,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:28:01" (1/1) ... [2021-11-21 00:28:01,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:28:02,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:28:05,164 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_040bd6bc-235b-470b-89d9-64aa825c65ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-21 00:28:05,166 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_040bd6bc-235b-470b-89d9-64aa825c65ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-21 00:28:05,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:28:05,207 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:28:05,624 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_040bd6bc-235b-470b-89d9-64aa825c65ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328445,328458] [2021-11-21 00:28:05,625 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_040bd6bc-235b-470b-89d9-64aa825c65ac/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i[328590,328603] [2021-11-21 00:28:05,629 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:28:05,802 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:28:05,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05 WrapperNode [2021-11-21 00:28:05,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:28:05,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:28:05,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:28:05,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:28:05,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:05,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,181 INFO L137 Inliner]: procedures = 388, calls = 2109, calls flagged for inlining = 154, calls inlined = 135, statements flattened = 4340 [2021-11-21 00:28:06,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:28:06,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:28:06,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:28:06,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:28:06,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:28:06,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:28:06,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:28:06,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:28:06,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (1/1) ... [2021-11-21 00:28:06,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:28:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:28:06,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:28:06,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:28:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_97 [2021-11-21 00:28:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_97 [2021-11-21 00:28:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:28:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:28:06,590 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-21 00:28:06,590 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-21 00:28:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-21 00:28:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-21 00:28:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:28:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:28:06,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:28:06,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:28:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:28:06,592 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:28:06,592 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-21 00:28:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-21 00:28:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure via_remove_one [2021-11-21 00:28:06,593 INFO L138 BoogieDeclarations]: Found implementation of procedure via_remove_one [2021-11-21 00:28:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-21 00:28:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-21 00:28:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-21 00:28:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-21 00:28:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:28:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:28:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-21 00:28:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-21 00:28:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-21 00:28:06,595 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-21 00:28:06,595 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 00:28:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 00:28:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:28:06,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:28:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:28:06,596 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-21 00:28:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-21 00:28:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-21 00:28:06,597 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-21 00:28:06,597 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-21 00:28:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-21 00:28:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-21 00:28:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-21 00:28:06,598 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:28:06,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:28:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-21 00:28:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-21 00:28:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-21 00:28:06,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-21 00:28:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:28:06,601 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-21 00:28:06,601 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-21 00:28:06,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-21 00:28:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_via_ircc_cb [2021-11-21 00:28:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-21 00:28:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-21 00:28:06,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:28:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:28:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:28:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-21 00:28:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-21 00:28:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:28:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:28:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:28:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-21 00:28:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-21 00:28:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:28:06,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:28:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:28:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:28:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-21 00:28:06,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-21 00:28:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-21 00:28:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-21 00:28:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-21 00:28:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-21 00:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-21 00:28:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-21 00:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-21 00:28:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-21 00:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:28:06,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:28:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:28:06,609 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-21 00:28:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-21 00:28:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:28:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:28:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:28:06,610 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 00:28:06,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 00:28:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:28:06,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:28:06,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:28:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:28:06,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:28:06,613 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-21 00:28:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-21 00:28:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:28:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-21 00:28:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-21 00:28:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-21 00:28:06,614 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:28:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:28:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 00:28:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 00:28:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-21 00:28:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-21 00:28:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-21 00:28:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-21 00:28:06,616 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:28:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:28:06,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 00:28:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 00:28:06,620 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-21 00:28:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-21 00:28:06,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:28:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:28:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-21 00:28:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-21 00:28:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:28:06,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:28:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:28:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:28:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-21 00:28:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-21 00:28:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-21 00:28:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-21 00:28:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-21 00:28:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-21 00:28:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-21 00:28:06,629 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-21 00:28:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:28:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:28:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-21 00:28:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-21 00:28:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-21 00:28:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-21 00:28:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 00:28:06,630 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 00:28:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:28:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:28:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-21 00:28:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-21 00:28:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:28:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:28:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 00:28:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-21 00:28:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-21 00:28:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:28:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:28:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 00:28:06,632 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 00:28:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:28:06,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:28:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:28:06,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:28:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:28:06,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:28:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-21 00:28:06,633 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-21 00:28:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 00:28:06,634 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 00:28:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-21 00:28:06,634 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-21 00:28:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 00:28:06,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 00:28:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 00:28:06,635 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 00:28:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-21 00:28:06,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-21 00:28:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:28:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-21 00:28:06,636 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-21 00:28:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-21 00:28:06,636 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-21 00:28:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-21 00:28:06,636 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-21 00:28:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:28:06,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:28:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-21 00:28:06,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_via_ircc_cb [2021-11-21 00:28:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-21 00:28:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-21 00:28:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-21 00:28:06,638 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-21 00:28:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:28:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:28:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-21 00:28:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-21 00:28:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-21 00:28:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-21 00:28:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-21 00:28:06,640 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-21 00:28:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 00:28:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 00:28:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:28:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-21 00:28:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-21 00:28:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:28:06,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:28:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-21 00:28:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-21 00:28:07,359 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:28:07,362 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:28:07,561 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:28:11,354 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:28:12,041 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:28:13,100 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:28:13,100 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:28:13,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:28:13 BoogieIcfgContainer [2021-11-21 00:28:13,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:28:13,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:28:13,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:28:13,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:28:13,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:28:01" (1/3) ... [2021-11-21 00:28:13,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b292d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:28:13, skipping insertion in model container [2021-11-21 00:28:13,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:28:05" (2/3) ... [2021-11-21 00:28:13,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b292d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:28:13, skipping insertion in model container [2021-11-21 00:28:13,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:28:13" (3/3) ... [2021-11-21 00:28:13,116 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-irda-via-ircc.cil.i [2021-11-21 00:28:13,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:28:13,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:28:13,183 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:28:13,190 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 00:28:13,191 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:28:13,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 1559 states, 807 states have (on average 1.241635687732342) internal successors, (1002), 831 states have internal predecessors, (1002), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) [2021-11-21 00:28:13,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-21 00:28:13,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:13,277 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:13,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash 737644416, now seen corresponding path program 1 times [2021-11-21 00:28:13,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:13,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575222810] [2021-11-21 00:28:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:13,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-21 00:28:14,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:14,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575222810] [2021-11-21 00:28:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575222810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:14,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:14,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:14,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254654264] [2021-11-21 00:28:14,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:14,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:14,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:14,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:14,099 INFO L87 Difference]: Start difference. First operand has 1559 states, 807 states have (on average 1.241635687732342) internal successors, (1002), 831 states have internal predecessors, (1002), 660 states have call successors, (660), 92 states have call predecessors, (660), 91 states have return successors, (656), 644 states have call predecessors, (656), 656 states have call successors, (656) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 00:28:16,287 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:18,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:20,802 INFO L93 Difference]: Finished difference Result 4334 states and 6480 transitions. [2021-11-21 00:28:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:20,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 127 [2021-11-21 00:28:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:20,862 INFO L225 Difference]: With dead ends: 4334 [2021-11-21 00:28:20,863 INFO L226 Difference]: Without dead ends: 2729 [2021-11-21 00:28:20,882 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 00:28:20,886 INFO L933 BasicCegarLoop]: 2720 mSDtfsCounter, 1852 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:20,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 4818 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 00:28:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-11-21 00:28:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2725. [2021-11-21 00:28:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2725 states, 1416 states have (on average 1.2337570621468927) internal successors, (1747), 1462 states have internal predecessors, (1747), 1143 states have call successors, (1143), 166 states have call predecessors, (1143), 165 states have return successors, (1160), 1116 states have call predecessors, (1160), 1143 states have call successors, (1160) [2021-11-21 00:28:21,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2725 states to 2725 states and 4050 transitions. [2021-11-21 00:28:21,306 INFO L78 Accepts]: Start accepts. Automaton has 2725 states and 4050 transitions. Word has length 127 [2021-11-21 00:28:21,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:21,308 INFO L470 AbstractCegarLoop]: Abstraction has 2725 states and 4050 transitions. [2021-11-21 00:28:21,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-21 00:28:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2725 states and 4050 transitions. [2021-11-21 00:28:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-21 00:28:21,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:21,343 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2021-11-21 00:28:21,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:28:21,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash 806473264, now seen corresponding path program 1 times [2021-11-21 00:28:21,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:21,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53080893] [2021-11-21 00:28:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:21,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:21,697 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-21 00:28:21,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:21,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53080893] [2021-11-21 00:28:21,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53080893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:21,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:21,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:21,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306578907] [2021-11-21 00:28:21,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:21,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:21,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:21,706 INFO L87 Difference]: Start difference. First operand 2725 states and 4050 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 00:28:23,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:25,262 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:26,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:29,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:29,440 INFO L93 Difference]: Finished difference Result 7256 states and 10798 transitions. [2021-11-21 00:28:29,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:29,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 181 [2021-11-21 00:28:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:29,493 INFO L225 Difference]: With dead ends: 7256 [2021-11-21 00:28:29,494 INFO L226 Difference]: Without dead ends: 4542 [2021-11-21 00:28:29,515 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 00:28:29,516 INFO L933 BasicCegarLoop]: 2568 mSDtfsCounter, 1571 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:29,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 4598 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 00:28:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2021-11-21 00:28:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4538. [2021-11-21 00:28:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 2346 states have (on average 1.2310315430520034) internal successors, (2888), 2414 states have internal predecessors, (2888), 1913 states have call successors, (1913), 279 states have call predecessors, (1913), 278 states have return successors, (1930), 1876 states have call predecessors, (1930), 1913 states have call successors, (1930) [2021-11-21 00:28:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 6731 transitions. [2021-11-21 00:28:30,016 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 6731 transitions. Word has length 181 [2021-11-21 00:28:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:30,018 INFO L470 AbstractCegarLoop]: Abstraction has 4538 states and 6731 transitions. [2021-11-21 00:28:30,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-21 00:28:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 6731 transitions. [2021-11-21 00:28:30,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-21 00:28:30,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:30,043 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-11-21 00:28:30,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:28:30,044 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash -404910037, now seen corresponding path program 1 times [2021-11-21 00:28:30,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:30,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652771583] [2021-11-21 00:28:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:30,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-11-21 00:28:30,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:30,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652771583] [2021-11-21 00:28:30,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652771583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:30,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:30,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:30,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453150277] [2021-11-21 00:28:30,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:30,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:30,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:30,371 INFO L87 Difference]: Start difference. First operand 4538 states and 6731 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 00:28:33,126 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:35,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:37,814 INFO L93 Difference]: Finished difference Result 10882 states and 16159 transitions. [2021-11-21 00:28:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 225 [2021-11-21 00:28:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:37,871 INFO L225 Difference]: With dead ends: 10882 [2021-11-21 00:28:37,871 INFO L226 Difference]: Without dead ends: 6355 [2021-11-21 00:28:37,909 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 00:28:37,912 INFO L933 BasicCegarLoop]: 3507 mSDtfsCounter, 1580 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1580 SdHoareTripleChecker+Valid, 5521 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:37,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1580 Valid, 5521 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-21 00:28:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6355 states. [2021-11-21 00:28:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6355 to 6351. [2021-11-21 00:28:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6351 states, 3275 states have (on average 1.2299236641221374) internal successors, (4028), 3365 states have internal predecessors, (4028), 2683 states have call successors, (2683), 393 states have call predecessors, (2683), 392 states have return successors, (2700), 2636 states have call predecessors, (2700), 2683 states have call successors, (2700) [2021-11-21 00:28:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6351 states to 6351 states and 9411 transitions. [2021-11-21 00:28:38,461 INFO L78 Accepts]: Start accepts. Automaton has 6351 states and 9411 transitions. Word has length 225 [2021-11-21 00:28:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:38,464 INFO L470 AbstractCegarLoop]: Abstraction has 6351 states and 9411 transitions. [2021-11-21 00:28:38,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-21 00:28:38,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6351 states and 9411 transitions. [2021-11-21 00:28:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-21 00:28:38,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:38,494 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 11, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-11-21 00:28:38,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:28:38,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:38,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1311790589, now seen corresponding path program 1 times [2021-11-21 00:28:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:38,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834608843] [2021-11-21 00:28:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:38,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-21 00:28:38,942 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834608843] [2021-11-21 00:28:38,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834608843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:38,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:38,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:38,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014955051] [2021-11-21 00:28:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:38,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:38,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:38,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:38,945 INFO L87 Difference]: Start difference. First operand 6351 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 00:28:42,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:43,555 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:44,983 INFO L93 Difference]: Finished difference Result 14682 states and 21752 transitions. [2021-11-21 00:28:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:44,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) Word has length 287 [2021-11-21 00:28:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:45,062 INFO L225 Difference]: With dead ends: 14682 [2021-11-21 00:28:45,062 INFO L226 Difference]: Without dead ends: 8342 [2021-11-21 00:28:45,110 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 00:28:45,112 INFO L933 BasicCegarLoop]: 3578 mSDtfsCounter, 2013 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 5305 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:45,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 5305 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-21 00:28:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8342 states. [2021-11-21 00:28:45,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8342 to 8338. [2021-11-21 00:28:45,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8338 states, 4298 states have (on average 1.2291763610981852) internal successors, (5283), 4415 states have internal predecessors, (5283), 3514 states have call successors, (3514), 527 states have call predecessors, (3514), 525 states have return successors, (3531), 3453 states have call predecessors, (3531), 3514 states have call successors, (3531) [2021-11-21 00:28:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8338 states to 8338 states and 12328 transitions. [2021-11-21 00:28:45,811 INFO L78 Accepts]: Start accepts. Automaton has 8338 states and 12328 transitions. Word has length 287 [2021-11-21 00:28:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:45,813 INFO L470 AbstractCegarLoop]: Abstraction has 8338 states and 12328 transitions. [2021-11-21 00:28:45,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40) [2021-11-21 00:28:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 8338 states and 12328 transitions. [2021-11-21 00:28:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-21 00:28:45,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:45,850 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 11, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:45,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:28:45,851 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:45,851 INFO L85 PathProgramCache]: Analyzing trace with hash 387094490, now seen corresponding path program 1 times [2021-11-21 00:28:45,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:45,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073264949] [2021-11-21 00:28:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:45,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-21 00:28:46,309 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:46,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073264949] [2021-11-21 00:28:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073264949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:28:46,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:28:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:28:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463506674] [2021-11-21 00:28:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:28:46,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:28:46,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:28:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:28:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:28:46,312 INFO L87 Difference]: Start difference. First operand 8338 states and 12328 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-21 00:28:48,548 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:49,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:53,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:28:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:28:53,802 INFO L93 Difference]: Finished difference Result 24427 states and 36115 transitions. [2021-11-21 00:28:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:28:53,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 314 [2021-11-21 00:28:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:28:54,037 INFO L225 Difference]: With dead ends: 24427 [2021-11-21 00:28:54,037 INFO L226 Difference]: Without dead ends: 16100 [2021-11-21 00:28:54,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 00:28:54,065 INFO L933 BasicCegarLoop]: 2626 mSDtfsCounter, 1947 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1954 SdHoareTripleChecker+Valid, 4673 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:28:54,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1954 Valid, 4673 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 00:28:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16100 states. [2021-11-21 00:28:55,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16100 to 16090. [2021-11-21 00:28:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16090 states, 8318 states have (on average 1.232748256792498) internal successors, (10254), 8541 states have internal predecessors, (10254), 6747 states have call successors, (6747), 1027 states have call predecessors, (6747), 1024 states have return successors, (6783), 6631 states have call predecessors, (6783), 6747 states have call successors, (6783) [2021-11-21 00:28:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 23784 transitions. [2021-11-21 00:28:55,317 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 23784 transitions. Word has length 314 [2021-11-21 00:28:55,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:28:55,319 INFO L470 AbstractCegarLoop]: Abstraction has 16090 states and 23784 transitions. [2021-11-21 00:28:55,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-21 00:28:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 23784 transitions. [2021-11-21 00:28:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-21 00:28:55,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:28:55,357 INFO L514 BasicCegarLoop]: trace histogram [13, 11, 11, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:28:55,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:28:55,358 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:28:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:28:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash -982150899, now seen corresponding path program 1 times [2021-11-21 00:28:55,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:28:55,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457521534] [2021-11-21 00:28:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:55,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:28:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2021-11-21 00:28:55,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:28:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457521534] [2021-11-21 00:28:55,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457521534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:28:55,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497144341] [2021-11-21 00:28:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:28:55,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:28:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:28:55,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:28:55,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:28:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:28:57,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 00:28:57,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:29:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-11-21 00:29:18,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:29:18,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497144341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:18,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:29:18,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2021-11-21 00:29:18,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222805103] [2021-11-21 00:29:18,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:18,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:29:18,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:29:18,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:29:18,071 INFO L87 Difference]: Start difference. First operand 16090 states and 23784 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) [2021-11-21 00:29:21,216 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:23,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:24,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:26,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:27,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:29,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:31,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:33,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:36,676 WARN L515 Checker$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 00:29:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:41,766 INFO L93 Difference]: Finished difference Result 28219 states and 41753 transitions. [2021-11-21 00:29:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:29:41,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) Word has length 318 [2021-11-21 00:29:41,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:41,984 INFO L225 Difference]: With dead ends: 28219 [2021-11-21 00:29:41,984 INFO L226 Difference]: Without dead ends: 28217 [2021-11-21 00:29:42,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:29:42,010 INFO L933 BasicCegarLoop]: 3058 mSDtfsCounter, 1501 mSDsluCounter, 9555 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 11805 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:42,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 11805 Invalid, 2028 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 2025 Invalid, 2 Unknown, 0 Unchecked, 22.3s Time] [2021-11-21 00:29:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28217 states. [2021-11-21 00:29:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28217 to 28197. [2021-11-21 00:29:44,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28197 states, 14538 states have (on average 1.23276929426331) internal successors, (17922), 14976 states have internal predecessors, (17922), 11868 states have call successors, (11868), 1812 states have call predecessors, (11868), 1790 states have return successors, (11940), 11596 states have call predecessors, (11940), 11868 states have call successors, (11940) [2021-11-21 00:29:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28197 states to 28197 states and 41730 transitions. [2021-11-21 00:29:44,591 INFO L78 Accepts]: Start accepts. Automaton has 28197 states and 41730 transitions. Word has length 318 [2021-11-21 00:29:44,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:44,593 INFO L470 AbstractCegarLoop]: Abstraction has 28197 states and 41730 transitions. [2021-11-21 00:29:44,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (51), 1 states have call predecessors, (51), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) [2021-11-21 00:29:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 28197 states and 41730 transitions. [2021-11-21 00:29:44,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-21 00:29:44,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:44,665 INFO L514 BasicCegarLoop]: trace histogram [15, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:44,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:29:44,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040bd6bc-235b-470b-89d9-64aa825c65ac/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:29:44,889 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:29:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:44,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1534964272, now seen corresponding path program 1 times [2021-11-21 00:29:44,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:44,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751289226] [2021-11-21 00:29:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:44,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-11-21 00:29:45,654 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:45,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751289226] [2021-11-21 00:29:45,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751289226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:45,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:45,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:29:45,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826796525] [2021-11-21 00:29:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:45,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:45,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:45,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:45,659 INFO L87 Difference]: Start difference. First operand 28197 states and 41730 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 00:29:48,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:50,718 WARN L515 Checker$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 00:29:52,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:29:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:29:54,960 INFO L93 Difference]: Finished difference Result 62493 states and 92591 transitions. [2021-11-21 00:29:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:29:54,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 330 [2021-11-21 00:29:54,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:29:55,208 INFO L225 Difference]: With dead ends: 62493 [2021-11-21 00:29:55,209 INFO L226 Difference]: Without dead ends: 34307 [2021-11-21 00:29:55,555 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 00:29:55,556 INFO L933 BasicCegarLoop]: 3472 mSDtfsCounter, 1545 mSDsluCounter, 2205 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:29:55,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 5494 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 561 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2021-11-21 00:29:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34307 states. [2021-11-21 00:29:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34307 to 34293. [2021-11-21 00:29:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34293 states, 17688 states have (on average 1.2338308457711442) internal successors, (21824), 18212 states have internal predecessors, (21824), 14432 states have call successors, (14432), 2198 states have call predecessors, (14432), 2172 states have return successors, (14504), 14110 states have call predecessors, (14504), 14432 states have call successors, (14504) [2021-11-21 00:29:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34293 states to 34293 states and 50760 transitions. [2021-11-21 00:29:58,635 INFO L78 Accepts]: Start accepts. Automaton has 34293 states and 50760 transitions. Word has length 330 [2021-11-21 00:29:58,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:29:58,636 INFO L470 AbstractCegarLoop]: Abstraction has 34293 states and 50760 transitions. [2021-11-21 00:29:58,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 00:29:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 34293 states and 50760 transitions. [2021-11-21 00:29:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-11-21 00:29:58,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:29:58,707 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 8, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:29:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:29:58,708 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:29:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:29:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1035810999, now seen corresponding path program 1 times [2021-11-21 00:29:58,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:29:58,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779019331] [2021-11-21 00:29:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:29:58,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:29:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:29:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-11-21 00:29:59,193 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:29:59,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779019331] [2021-11-21 00:29:59,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779019331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:29:59,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:29:59,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:29:59,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246942779] [2021-11-21 00:29:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:29:59,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:29:59,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:29:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:29:59,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:29:59,197 INFO L87 Difference]: Start difference. First operand 34293 states and 50760 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 00:30:03,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:05,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:06,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:06,591 INFO L93 Difference]: Finished difference Result 68699 states and 101193 transitions. [2021-11-21 00:30:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:30:06,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 368 [2021-11-21 00:30:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:06,791 INFO L225 Difference]: With dead ends: 68699 [2021-11-21 00:30:06,791 INFO L226 Difference]: Without dead ends: 34417 [2021-11-21 00:30:07,047 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 00:30:07,048 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 2059 mSDsluCounter, 2213 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2059 SdHoareTripleChecker+Valid, 4694 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:07,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2059 Valid, 4694 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-21 00:30:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34417 states. [2021-11-21 00:30:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34417 to 34407. [2021-11-21 00:30:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34407 states, 18290 states have (on average 1.2230727173318754) internal successors, (22370), 18844 states have internal predecessors, (22370), 13866 states have call successors, (13866), 2288 states have call predecessors, (13866), 2250 states have return successors, (14004), 13488 states have call predecessors, (14004), 13866 states have call successors, (14004) [2021-11-21 00:30:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34407 states to 34407 states and 50240 transitions. [2021-11-21 00:30:09,381 INFO L78 Accepts]: Start accepts. Automaton has 34407 states and 50240 transitions. Word has length 368 [2021-11-21 00:30:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:09,382 INFO L470 AbstractCegarLoop]: Abstraction has 34407 states and 50240 transitions. [2021-11-21 00:30:09,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-21 00:30:09,382 INFO L276 IsEmpty]: Start isEmpty. Operand 34407 states and 50240 transitions. [2021-11-21 00:30:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-21 00:30:09,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:09,397 INFO L514 BasicCegarLoop]: trace histogram [17, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:30:09,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:30:09,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash 264409717, now seen corresponding path program 1 times [2021-11-21 00:30:09,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104894588] [2021-11-21 00:30:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:09,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2021-11-21 00:30:09,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104894588] [2021-11-21 00:30:09,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104894588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:09,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:09,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:30:09,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047774197] [2021-11-21 00:30:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:09,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:09,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:09,637 INFO L87 Difference]: Start difference. First operand 34407 states and 50240 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:30:13,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:14,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:17,922 WARN L515 Checker$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 00:30:19,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:21,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:26,254 INFO L93 Difference]: Finished difference Result 75282 states and 109875 transitions. [2021-11-21 00:30:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 365 [2021-11-21 00:30:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:26,460 INFO L225 Difference]: With dead ends: 75282 [2021-11-21 00:30:26,460 INFO L226 Difference]: Without dead ends: 40904 [2021-11-21 00:30:26,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:26,802 INFO L933 BasicCegarLoop]: 3574 mSDtfsCounter, 1696 mSDsluCounter, 9993 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 12743 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:26,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1696 Valid, 12743 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1209 Invalid, 1 Unknown, 0 Unchecked, 14.7s Time] [2021-11-21 00:30:26,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40904 states. [2021-11-21 00:30:29,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40904 to 40866. [2021-11-21 00:30:29,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40866 states, 21683 states have (on average 1.224599916985657) internal successors, (26553), 22418 states have internal predecessors, (26553), 16438 states have call successors, (16438), 2784 states have call predecessors, (16438), 2744 states have return successors, (16594), 15937 states have call predecessors, (16594), 16438 states have call successors, (16594) [2021-11-21 00:30:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40866 states to 40866 states and 59585 transitions. [2021-11-21 00:30:29,356 INFO L78 Accepts]: Start accepts. Automaton has 40866 states and 59585 transitions. Word has length 365 [2021-11-21 00:30:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 40866 states and 59585 transitions. [2021-11-21 00:30:29,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:30:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 40866 states and 59585 transitions. [2021-11-21 00:30:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-11-21 00:30:29,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:29,371 INFO L514 BasicCegarLoop]: trace histogram [17, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:30:29,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:30:29,371 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:29,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1390279882, now seen corresponding path program 1 times [2021-11-21 00:30:29,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:29,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315308023] [2021-11-21 00:30:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:29,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2021-11-21 00:30:29,611 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:29,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315308023] [2021-11-21 00:30:29,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315308023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:29,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:29,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:30:29,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591406877] [2021-11-21 00:30:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:29,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:29,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:29,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:29,614 INFO L87 Difference]: Start difference. First operand 40866 states and 59585 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:30:31,626 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:33,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:35,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:37,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:39,580 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 00:30:44,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:30:44,951 INFO L93 Difference]: Finished difference Result 87024 states and 126962 transitions. [2021-11-21 00:30:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:30:44,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 366 [2021-11-21 00:30:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:30:45,324 INFO L225 Difference]: With dead ends: 87024 [2021-11-21 00:30:45,324 INFO L226 Difference]: Without dead ends: 46187 [2021-11-21 00:30:45,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:45,447 INFO L933 BasicCegarLoop]: 3477 mSDtfsCounter, 1531 mSDsluCounter, 9788 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 12456 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:30:45,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 12456 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1203 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2021-11-21 00:30:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46187 states. [2021-11-21 00:30:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46187 to 46144. [2021-11-21 00:30:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46144 states, 24480 states have (on average 1.224264705882353) internal successors, (29970), 25290 states have internal predecessors, (29970), 18562 states have call successors, (18562), 3133 states have call predecessors, (18562), 3101 states have return successors, (18730), 18026 states have call predecessors, (18730), 18562 states have call successors, (18730) [2021-11-21 00:30:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46144 states to 46144 states and 67262 transitions. [2021-11-21 00:30:48,246 INFO L78 Accepts]: Start accepts. Automaton has 46144 states and 67262 transitions. Word has length 366 [2021-11-21 00:30:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:30:48,247 INFO L470 AbstractCegarLoop]: Abstraction has 46144 states and 67262 transitions. [2021-11-21 00:30:48,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:30:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46144 states and 67262 transitions. [2021-11-21 00:30:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-11-21 00:30:48,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:30:48,264 INFO L514 BasicCegarLoop]: trace histogram [17, 14, 14, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:30:48,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:30:48,265 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:30:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:30:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1330809289, now seen corresponding path program 1 times [2021-11-21 00:30:48,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:30:48,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519728503] [2021-11-21 00:30:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:30:48,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:30:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:30:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2021-11-21 00:30:48,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:30:48,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519728503] [2021-11-21 00:30:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519728503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:30:48,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:30:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:30:48,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450223263] [2021-11-21 00:30:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:30:48,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:30:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:30:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:30:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:30:48,511 INFO L87 Difference]: Start difference. First operand 46144 states and 67262 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:30:50,801 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:53,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:54,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:57,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:30:59,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:06,218 INFO L93 Difference]: Finished difference Result 97620 states and 142455 transitions. [2021-11-21 00:31:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:31:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) Word has length 368 [2021-11-21 00:31:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:06,486 INFO L225 Difference]: With dead ends: 97620 [2021-11-21 00:31:06,486 INFO L226 Difference]: Without dead ends: 51505 [2021-11-21 00:31:06,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:31:06,645 INFO L933 BasicCegarLoop]: 3513 mSDtfsCounter, 1563 mSDsluCounter, 9869 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 12570 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:06,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 12570 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1214 Invalid, 1 Unknown, 0 Unchecked, 14.8s Time] [2021-11-21 00:31:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51505 states. [2021-11-21 00:31:09,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51505 to 51467. [2021-11-21 00:31:09,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51467 states, 27293 states have (on average 1.223866925585315) internal successors, (33403), 28178 states have internal predecessors, (33403), 20744 states have call successors, (20744), 3465 states have call predecessors, (20744), 3429 states have return successors, (20912), 20161 states have call predecessors, (20912), 20744 states have call successors, (20912) [2021-11-21 00:31:09,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51467 states to 51467 states and 75059 transitions. [2021-11-21 00:31:09,845 INFO L78 Accepts]: Start accepts. Automaton has 51467 states and 75059 transitions. Word has length 368 [2021-11-21 00:31:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:09,846 INFO L470 AbstractCegarLoop]: Abstraction has 51467 states and 75059 transitions. [2021-11-21 00:31:09,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (46), 4 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:31:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 51467 states and 75059 transitions. [2021-11-21 00:31:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-21 00:31:09,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:09,866 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:31:09,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:31:09,867 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:09,867 INFO L85 PathProgramCache]: Analyzing trace with hash -966840358, now seen corresponding path program 1 times [2021-11-21 00:31:09,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:09,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307023325] [2021-11-21 00:31:09,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:09,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2021-11-21 00:31:10,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:10,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307023325] [2021-11-21 00:31:10,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307023325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:10,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:10,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:10,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716446163] [2021-11-21 00:31:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:10,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:10,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:10,083 INFO L87 Difference]: Start difference. First operand 51467 states and 75059 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:31:12,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:13,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:19,466 INFO L93 Difference]: Finished difference Result 108926 states and 158895 transitions. [2021-11-21 00:31:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:31:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 380 [2021-11-21 00:31:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:19,783 INFO L225 Difference]: With dead ends: 108926 [2021-11-21 00:31:19,783 INFO L226 Difference]: Without dead ends: 57488 [2021-11-21 00:31:20,156 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 00:31:20,157 INFO L933 BasicCegarLoop]: 3317 mSDtfsCounter, 1692 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 5342 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:20,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 5342 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-21 00:31:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57488 states. [2021-11-21 00:31:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57488 to 57474. [2021-11-21 00:31:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57474 states, 30436 states have (on average 1.2259166776186095) internal successors, (37312), 31494 states have internal predecessors, (37312), 23177 states have call successors, (23177), 3906 states have call predecessors, (23177), 3860 states have return successors, (23345), 22463 states have call predecessors, (23345), 23177 states have call successors, (23345) [2021-11-21 00:31:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57474 states to 57474 states and 83834 transitions. [2021-11-21 00:31:23,940 INFO L78 Accepts]: Start accepts. Automaton has 57474 states and 83834 transitions. Word has length 380 [2021-11-21 00:31:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:23,941 INFO L470 AbstractCegarLoop]: Abstraction has 57474 states and 83834 transitions. [2021-11-21 00:31:23,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:31:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 57474 states and 83834 transitions. [2021-11-21 00:31:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2021-11-21 00:31:23,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:23,956 INFO L514 BasicCegarLoop]: trace histogram [18, 14, 14, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-11-21 00:31:23,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:31:23,957 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2093060141, now seen corresponding path program 1 times [2021-11-21 00:31:23,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:23,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713600944] [2021-11-21 00:31:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:23,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-11-21 00:31:24,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:24,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713600944] [2021-11-21 00:31:24,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713600944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:24,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:24,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:24,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774324268] [2021-11-21 00:31:24,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:24,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:24,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:24,167 INFO L87 Difference]: Start difference. First operand 57474 states and 83834 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:31:27,188 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:28,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:33,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:33,644 INFO L93 Difference]: Finished difference Result 120340 states and 175659 transitions. [2021-11-21 00:31:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:31:33,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 387 [2021-11-21 00:31:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:31:33,956 INFO L225 Difference]: With dead ends: 120340 [2021-11-21 00:31:33,957 INFO L226 Difference]: Without dead ends: 62895 [2021-11-21 00:31:34,154 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 00:31:34,154 INFO L933 BasicCegarLoop]: 3498 mSDtfsCounter, 1575 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 5526 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:31:34,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 5526 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 00:31:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62895 states. [2021-11-21 00:31:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62895 to 62881. [2021-11-21 00:31:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62881 states, 33309 states have (on average 1.2257648083100663) internal successors, (40829), 34442 states have internal predecessors, (40829), 25371 states have call successors, (25371), 4250 states have call predecessors, (25371), 4200 states have return successors, (25539), 24610 states have call predecessors, (25539), 25371 states have call successors, (25539) [2021-11-21 00:31:38,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62881 states to 62881 states and 91739 transitions. [2021-11-21 00:31:38,391 INFO L78 Accepts]: Start accepts. Automaton has 62881 states and 91739 transitions. Word has length 387 [2021-11-21 00:31:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:31:38,393 INFO L470 AbstractCegarLoop]: Abstraction has 62881 states and 91739 transitions. [2021-11-21 00:31:38,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2021-11-21 00:31:38,393 INFO L276 IsEmpty]: Start isEmpty. Operand 62881 states and 91739 transitions. [2021-11-21 00:31:38,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-21 00:31:38,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:31:38,429 INFO L514 BasicCegarLoop]: trace histogram [18, 15, 15, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 00:31:38,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:31:38,429 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:31:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:31:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash 727128501, now seen corresponding path program 1 times [2021-11-21 00:31:38,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:31:38,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195947490] [2021-11-21 00:31:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:31:38,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:31:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:31:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-11-21 00:31:38,634 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:31:38,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195947490] [2021-11-21 00:31:38,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195947490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:31:38,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:31:38,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:31:38,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739053465] [2021-11-21 00:31:38,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:31:38,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:31:38,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:31:38,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:31:38,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:31:38,637 INFO L87 Difference]: Start difference. First operand 62881 states and 91739 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-21 00:31:40,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:42,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:31:48,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:31:48,032 INFO L93 Difference]: Finished difference Result 131034 states and 191301 transitions. [2021-11-21 00:31:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:31:48,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 397 [2021-11-21 00:31:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted.