./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:32:08,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:32:08,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:32:08,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:32:08,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:32:08,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:32:08,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:32:08,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:32:08,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:32:08,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:32:08,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:32:08,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:32:08,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:32:08,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:32:08,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:32:08,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:32:08,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:32:08,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:32:08,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:32:08,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:32:08,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:32:08,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:32:08,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:32:08,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:32:08,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:32:08,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:32:08,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:32:08,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:32:08,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:32:08,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:32:08,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:32:08,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:32:08,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:32:08,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:32:08,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:32:08,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:32:08,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:32:08,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:32:08,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:32:08,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:32:08,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:32:08,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:32:08,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:32:08,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:32:08,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:32:08,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:32:08,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:32:08,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:32:08,861 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:32:08,861 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:32:08,861 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:32:08,861 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:32:08,862 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:32:08,863 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:32:08,863 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:32:08,863 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:32:08,863 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:32:08,864 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:32:08,864 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:32:08,864 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:32:08,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:32:08,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:32:08,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:32:08,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:32:08,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:32:08,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:32:08,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:32:08,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:32:08,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:32:08,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:32:08,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:32:08,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:08,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:32:08,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:32:08,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:32:08,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:32:08,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:32:08,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:32:08,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:32:08,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:32:08,871 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_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2021-11-23 03:32:09,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:32:09,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:32:09,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:32:09,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:32:09,242 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:32:09,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-23 03:32:09,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/data/91e8add27/22013d6205464e1fb6ed18aec7c62232/FLAG6510cbbcc [2021-11-23 03:32:10,539 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:32:10,541 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-23 03:32:10,613 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/data/91e8add27/22013d6205464e1fb6ed18aec7c62232/FLAG6510cbbcc [2021-11-23 03:32:10,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/data/91e8add27/22013d6205464e1fb6ed18aec7c62232 [2021-11-23 03:32:10,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:32:10,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:32:10,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:32:10,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:32:10,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:32:10,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:10" (1/1) ... [2021-11-23 03:32:10,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785fa826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:10, skipping insertion in model container [2021-11-23 03:32:10,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:32:10" (1/1) ... [2021-11-23 03:32:10,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:32:11,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:32:15,408 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_a84ab34d-b02e-4725-9604-5be5f33c35d9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-23 03:32:15,411 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_a84ab34d-b02e-4725-9604-5be5f33c35d9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-23 03:32:15,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:32:15,506 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:32:15,906 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_a84ab34d-b02e-4725-9604-5be5f33c35d9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2021-11-23 03:32:15,907 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_a84ab34d-b02e-4725-9604-5be5f33c35d9/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2021-11-23 03:32:15,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:32:16,187 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:32:16,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16 WrapperNode [2021-11-23 03:32:16,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:32:16,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:32:16,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:32:16,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:32:16,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,562 INFO L137 Inliner]: procedures = 562, calls = 2384, calls flagged for inlining = 265, calls inlined = 187, statements flattened = 4537 [2021-11-23 03:32:16,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:32:16,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:32:16,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:32:16,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:32:16,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:32:16,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:32:16,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:32:16,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:32:16,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (1/1) ... [2021-11-23 03:32:16,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:32:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:16,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:32:16,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a84ab34d-b02e-4725-9604-5be5f33c35d9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:32:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2021-11-23 03:32:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2021-11-23 03:32:16,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:32:16,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:32:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-23 03:32:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-23 03:32:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-23 03:32:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-23 03:32:16,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:32:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:32:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2021-11-23 03:32:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2021-11-23 03:32:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2021-11-23 03:32:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2021-11-23 03:32:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 03:32:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 03:32:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2021-11-23 03:32:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2021-11-23 03:32:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:32:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:32:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2021-11-23 03:32:16,960 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2021-11-23 03:32:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2021-11-23 03:32:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2021-11-23 03:32:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2021-11-23 03:32:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2021-11-23 03:32:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2021-11-23 03:32:16,961 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2021-11-23 03:32:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2021-11-23 03:32:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2021-11-23 03:32:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:32:16,962 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:32:16,962 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2021-11-23 03:32:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2021-11-23 03:32:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2021-11-23 03:32:16,963 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2021-11-23 03:32:16,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 03:32:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 03:32:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-23 03:32:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-23 03:32:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:32:16,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:32:16,964 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2021-11-23 03:32:16,965 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2021-11-23 03:32:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:32:16,965 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-23 03:32:16,966 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-23 03:32:16,966 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2021-11-23 03:32:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2021-11-23 03:32:16,967 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2021-11-23 03:32:16,967 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2021-11-23 03:32:16,968 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 03:32:16,968 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 03:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2021-11-23 03:32:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2021-11-23 03:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-11-23 03:32:16,969 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-11-23 03:32:16,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-23 03:32:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-23 03:32:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:32:16,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:32:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:32:16,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 03:32:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 03:32:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:32:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 03:32:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 03:32:16,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-23 03:32:16,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-23 03:32:16,972 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2021-11-23 03:32:16,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2021-11-23 03:32:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 03:32:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 03:32:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 03:32:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 03:32:16,973 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2021-11-23 03:32:16,973 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2021-11-23 03:32:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2021-11-23 03:32:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2021-11-23 03:32:16,974 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-23 03:32:16,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-23 03:32:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:32:16,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 03:32:16,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 03:32:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:32:16,976 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 03:32:16,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 03:32:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:32:16,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:32:16,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-23 03:32:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-23 03:32:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-23 03:32:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2021-11-23 03:32:16,978 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2021-11-23 03:32:16,978 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 03:32:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 03:32:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:32:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:32:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 03:32:16,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 03:32:16,979 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:32:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:32:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2021-11-23 03:32:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2021-11-23 03:32:16,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:32:16,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:32:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2021-11-23 03:32:16,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2021-11-23 03:32:16,981 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:32:16,982 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:32:16,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:32:16,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:32:16,985 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2021-11-23 03:32:16,985 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2021-11-23 03:32:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2021-11-23 03:32:16,987 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2021-11-23 03:32:16,987 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2021-11-23 03:32:16,988 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2021-11-23 03:32:16,988 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 03:32:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 03:32:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-23 03:32:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-23 03:32:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2021-11-23 03:32:16,995 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2021-11-23 03:32:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:32:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:32:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 03:32:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 03:32:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-23 03:32:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-23 03:32:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2021-11-23 03:32:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2021-11-23 03:32:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 03:32:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 03:32:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:32:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2021-11-23 03:32:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2021-11-23 03:32:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2021-11-23 03:32:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2021-11-23 03:32:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2021-11-23 03:32:16,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2021-11-23 03:32:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:32:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-11-23 03:32:16,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-11-23 03:32:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2021-11-23 03:32:16,998 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2021-11-23 03:32:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2021-11-23 03:32:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2021-11-23 03:32:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:32:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-23 03:32:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-23 03:32:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2021-11-23 03:32:16,999 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2021-11-23 03:32:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2021-11-23 03:32:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2021-11-23 03:32:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 03:32:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 03:32:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 03:32:17,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 03:32:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-11-23 03:32:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-11-23 03:32:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2021-11-23 03:32:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2021-11-23 03:32:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 03:32:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 03:32:17,001 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2021-11-23 03:32:17,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2021-11-23 03:32:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2021-11-23 03:32:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2021-11-23 03:32:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2021-11-23 03:32:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2021-11-23 03:32:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2021-11-23 03:32:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2021-11-23 03:32:17,002 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-23 03:32:17,002 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-23 03:32:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 03:32:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 03:32:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-23 03:32:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-23 03:32:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2021-11-23 03:32:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2021-11-23 03:32:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 03:32:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 03:32:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:32:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:32:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2021-11-23 03:32:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2021-11-23 03:32:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:32:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:32:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:32:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 03:32:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 03:32:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2021-11-23 03:32:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2021-11-23 03:32:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2021-11-23 03:32:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2021-11-23 03:32:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 03:32:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 03:32:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-23 03:32:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-23 03:32:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2021-11-23 03:32:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2021-11-23 03:32:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2021-11-23 03:32:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2021-11-23 03:32:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 03:32:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 03:32:17,007 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-23 03:32:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-23 03:32:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 03:32:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 03:32:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2021-11-23 03:32:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2021-11-23 03:32:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2021-11-23 03:32:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2021-11-23 03:32:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:32:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 03:32:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 03:32:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-23 03:32:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-23 03:32:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-11-23 03:32:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-11-23 03:32:17,009 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2021-11-23 03:32:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2021-11-23 03:32:17,010 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2021-11-23 03:32:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2021-11-23 03:32:17,857 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:32:17,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:32:18,209 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:32:25,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:32:26,190 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:32:27,080 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:32:27,080 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:32:27,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:27 BoogieIcfgContainer [2021-11-23 03:32:27,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:32:27,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:32:27,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:32:27,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:32:27,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:32:10" (1/3) ... [2021-11-23 03:32:27,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2e49b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:27, skipping insertion in model container [2021-11-23 03:32:27,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:32:16" (2/3) ... [2021-11-23 03:32:27,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2e49b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:32:27, skipping insertion in model container [2021-11-23 03:32:27,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:32:27" (3/3) ... [2021-11-23 03:32:27,100 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2021-11-23 03:32:27,111 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:32:27,111 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:32:27,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:32:27,203 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:32:27,207 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:32:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) [2021-11-23 03:32:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-23 03:32:27,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:27,325 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:27,326 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash -703431458, now seen corresponding path program 1 times [2021-11-23 03:32:27,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:27,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989923041] [2021-11-23 03:32:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:27,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2021-11-23 03:32:28,344 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:28,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989923041] [2021-11-23 03:32:28,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989923041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:28,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:28,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:32:28,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955509218] [2021-11-23 03:32:28,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:28,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:32:28,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:28,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:32:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:28,415 INFO L87 Difference]: Start difference. First operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-23 03:32:32,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:33,868 INFO L93 Difference]: Finished difference Result 3597 states and 5097 transitions. [2021-11-23 03:32:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:32:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 395 [2021-11-23 03:32:33,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:33,914 INFO L225 Difference]: With dead ends: 3597 [2021-11-23 03:32:33,914 INFO L226 Difference]: Without dead ends: 2335 [2021-11-23 03:32:33,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:33,932 INFO L933 BasicCegarLoop]: 1915 mSDtfsCounter, 1610 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:33,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 3396 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 562 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:32:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-11-23 03:32:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2331. [2021-11-23 03:32:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 1362 states have (on average 1.2723935389133627) internal successors, (1733), 1400 states have internal predecessors, (1733), 762 states have call successors, (762), 206 states have call predecessors, (762), 206 states have return successors, (766), 758 states have call predecessors, (766), 762 states have call successors, (766) [2021-11-23 03:32:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3261 transitions. [2021-11-23 03:32:34,331 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3261 transitions. Word has length 395 [2021-11-23 03:32:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:34,339 INFO L470 AbstractCegarLoop]: Abstraction has 2331 states and 3261 transitions. [2021-11-23 03:32:34,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2021-11-23 03:32:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3261 transitions. [2021-11-23 03:32:34,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2021-11-23 03:32:34,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:34,371 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 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] [2021-11-23 03:32:34,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:32:34,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2050985762, now seen corresponding path program 1 times [2021-11-23 03:32:34,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:34,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312400908] [2021-11-23 03:32:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:34,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2021-11-23 03:32:34,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:34,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312400908] [2021-11-23 03:32:34,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312400908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:34,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:34,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:32:34,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039214503] [2021-11-23 03:32:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:34,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:32:34,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:32:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:34,929 INFO L87 Difference]: Start difference. First operand 2331 states and 3261 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 03:32:39,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:40,528 INFO L93 Difference]: Finished difference Result 6813 states and 9511 transitions. [2021-11-23 03:32:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:32:40,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 399 [2021-11-23 03:32:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:40,575 INFO L225 Difference]: With dead ends: 6813 [2021-11-23 03:32:40,576 INFO L226 Difference]: Without dead ends: 4541 [2021-11-23 03:32:40,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:40,590 INFO L933 BasicCegarLoop]: 1817 mSDtfsCounter, 1549 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:40,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 3234 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 553 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 03:32:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2021-11-23 03:32:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4537. [2021-11-23 03:32:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 2658 states have (on average 1.27313769751693) internal successors, (3384), 2736 states have internal predecessors, (3384), 1467 states have call successors, (1467), 411 states have call predecessors, (1467), 411 states have return successors, (1474), 1457 states have call predecessors, (1474), 1467 states have call successors, (1474) [2021-11-23 03:32:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6325 transitions. [2021-11-23 03:32:40,887 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6325 transitions. Word has length 399 [2021-11-23 03:32:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:40,888 INFO L470 AbstractCegarLoop]: Abstraction has 4537 states and 6325 transitions. [2021-11-23 03:32:40,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 03:32:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6325 transitions. [2021-11-23 03:32:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2021-11-23 03:32:40,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:40,996 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 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] [2021-11-23 03:32:40,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:32:40,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash -412442778, now seen corresponding path program 1 times [2021-11-23 03:32:40,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:40,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773730772] [2021-11-23 03:32:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:40,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2021-11-23 03:32:41,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:41,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773730772] [2021-11-23 03:32:41,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773730772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:41,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:41,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:32:41,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105188981] [2021-11-23 03:32:41,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:41,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:32:41,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:32:41,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:41,320 INFO L87 Difference]: Start difference. First operand 4537 states and 6325 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 03:32:45,839 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:46,813 INFO L93 Difference]: Finished difference Result 13367 states and 18614 transitions. [2021-11-23 03:32:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:32:46,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 400 [2021-11-23 03:32:46,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:46,896 INFO L225 Difference]: With dead ends: 13367 [2021-11-23 03:32:46,896 INFO L226 Difference]: Without dead ends: 8889 [2021-11-23 03:32:46,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:46,926 INFO L933 BasicCegarLoop]: 1962 mSDtfsCounter, 1547 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:46,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 3379 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 592 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:32:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2021-11-23 03:32:47,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8885. [2021-11-23 03:32:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8885 states, 5216 states have (on average 1.272239263803681) internal successors, (6636), 5374 states have internal predecessors, (6636), 2849 states have call successors, (2849), 819 states have call predecessors, (2849), 819 states have return successors, (2869), 2827 states have call predecessors, (2869), 2849 states have call successors, (2869) [2021-11-23 03:32:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 12354 transitions. [2021-11-23 03:32:47,599 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 12354 transitions. Word has length 400 [2021-11-23 03:32:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:47,601 INFO L470 AbstractCegarLoop]: Abstraction has 8885 states and 12354 transitions. [2021-11-23 03:32:47,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 03:32:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 12354 transitions. [2021-11-23 03:32:47,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2021-11-23 03:32:47,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:47,639 INFO L514 BasicCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 5, 5, 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] [2021-11-23 03:32:47,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:32:47,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -364194020, now seen corresponding path program 1 times [2021-11-23 03:32:47,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:47,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381511918] [2021-11-23 03:32:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:47,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2021-11-23 03:32:47,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:47,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381511918] [2021-11-23 03:32:47,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381511918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:47,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:47,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:32:47,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161498997] [2021-11-23 03:32:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:47,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:32:47,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:47,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:32:47,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:47,995 INFO L87 Difference]: Start difference. First operand 8885 states and 12354 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-23 03:32:53,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:53,994 INFO L93 Difference]: Finished difference Result 18792 states and 26064 transitions. [2021-11-23 03:32:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:32:53,996 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 415 [2021-11-23 03:32:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:54,120 INFO L225 Difference]: With dead ends: 18792 [2021-11-23 03:32:54,121 INFO L226 Difference]: Without dead ends: 9966 [2021-11-23 03:32:54,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:54,170 INFO L933 BasicCegarLoop]: 1834 mSDtfsCounter, 1410 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:54,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 3233 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 560 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:32:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2021-11-23 03:32:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9964. [2021-11-23 03:32:54,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9964 states, 5851 states have (on average 1.2693556656981713) internal successors, (7427), 6027 states have internal predecessors, (7427), 3172 states have call successors, (3172), 940 states have call predecessors, (3172), 940 states have return successors, (3194), 3149 states have call predecessors, (3194), 3172 states have call successors, (3194) [2021-11-23 03:32:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9964 states to 9964 states and 13793 transitions. [2021-11-23 03:32:54,932 INFO L78 Accepts]: Start accepts. Automaton has 9964 states and 13793 transitions. Word has length 415 [2021-11-23 03:32:54,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:54,933 INFO L470 AbstractCegarLoop]: Abstraction has 9964 states and 13793 transitions. [2021-11-23 03:32:54,934 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-23 03:32:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 9964 states and 13793 transitions. [2021-11-23 03:32:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-23 03:32:54,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:54,973 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:54,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:32:54,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1531820240, now seen corresponding path program 1 times [2021-11-23 03:32:54,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629750535] [2021-11-23 03:32:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:54,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2021-11-23 03:32:55,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:55,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629750535] [2021-11-23 03:32:55,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629750535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:32:55,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:32:55,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:32:55,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214526479] [2021-11-23 03:32:55,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:55,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:32:55,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:32:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:32:55,333 INFO L87 Difference]: Start difference. First operand 9964 states and 13793 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-23 03:32:57,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:02,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:02,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:02,864 INFO L93 Difference]: Finished difference Result 23220 states and 32149 transitions. [2021-11-23 03:33:02,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:33:02,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 443 [2021-11-23 03:33:02,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:02,962 INFO L225 Difference]: With dead ends: 23220 [2021-11-23 03:33:02,963 INFO L226 Difference]: Without dead ends: 14322 [2021-11-23 03:33:03,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:03,015 INFO L933 BasicCegarLoop]: 2602 mSDtfsCounter, 1544 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:03,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 4017 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 768 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-23 03:33:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14322 states. [2021-11-23 03:33:03,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14322 to 14318. [2021-11-23 03:33:03,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14318 states, 8406 states have (on average 1.2693314299310017) internal successors, (10670), 8662 states have internal predecessors, (10670), 4552 states have call successors, (4552), 1359 states have call predecessors, (4552), 1359 states have return successors, (4586), 4517 states have call predecessors, (4586), 4552 states have call successors, (4586) [2021-11-23 03:33:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14318 states to 14318 states and 19808 transitions. [2021-11-23 03:33:03,917 INFO L78 Accepts]: Start accepts. Automaton has 14318 states and 19808 transitions. Word has length 443 [2021-11-23 03:33:03,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:03,920 INFO L470 AbstractCegarLoop]: Abstraction has 14318 states and 19808 transitions. [2021-11-23 03:33:03,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-23 03:33:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 14318 states and 19808 transitions. [2021-11-23 03:33:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-23 03:33:03,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:03,974 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:03,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:33:03,974 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:03,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:03,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1113411090, now seen corresponding path program 1 times [2021-11-23 03:33:03,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:03,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816137629] [2021-11-23 03:33:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:03,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2021-11-23 03:33:04,326 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816137629] [2021-11-23 03:33:04,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816137629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:04,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:04,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:33:04,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271502250] [2021-11-23 03:33:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:04,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:33:04,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:33:04,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:04,330 INFO L87 Difference]: Start difference. First operand 14318 states and 19808 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 03:33:09,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:10,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:10,487 INFO L93 Difference]: Finished difference Result 34083 states and 47155 transitions. [2021-11-23 03:33:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:33:10,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 447 [2021-11-23 03:33:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:10,629 INFO L225 Difference]: With dead ends: 34083 [2021-11-23 03:33:10,630 INFO L226 Difference]: Without dead ends: 20831 [2021-11-23 03:33:10,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:10,688 INFO L933 BasicCegarLoop]: 2574 mSDtfsCounter, 1549 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:10,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 3989 Invalid, 769 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:33:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20831 states. [2021-11-23 03:33:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20831 to 20827. [2021-11-23 03:33:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20827 states, 12228 states have (on average 1.269299967288191) internal successors, (15521), 12604 states have internal predecessors, (15521), 6611 states have call successors, (6611), 1987 states have call predecessors, (6611), 1987 states have return successors, (6659), 6558 states have call predecessors, (6659), 6611 states have call successors, (6659) [2021-11-23 03:33:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20827 states to 20827 states and 28791 transitions. [2021-11-23 03:33:12,146 INFO L78 Accepts]: Start accepts. Automaton has 20827 states and 28791 transitions. Word has length 447 [2021-11-23 03:33:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:12,148 INFO L470 AbstractCegarLoop]: Abstraction has 20827 states and 28791 transitions. [2021-11-23 03:33:12,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 03:33:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 20827 states and 28791 transitions. [2021-11-23 03:33:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2021-11-23 03:33:12,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:12,229 INFO L514 BasicCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:12,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:33:12,230 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:12,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 275502618, now seen corresponding path program 1 times [2021-11-23 03:33:12,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:12,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172911300] [2021-11-23 03:33:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:12,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2021-11-23 03:33:12,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172911300] [2021-11-23 03:33:12,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172911300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:12,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:12,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:33:12,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128688489] [2021-11-23 03:33:12,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:12,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:33:12,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:12,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:33:12,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:12,590 INFO L87 Difference]: Start difference. First operand 20827 states and 28791 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 03:33:18,775 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:19,608 INFO L93 Difference]: Finished difference Result 50297 states and 69538 transitions. [2021-11-23 03:33:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:33:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 448 [2021-11-23 03:33:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:19,798 INFO L225 Difference]: With dead ends: 50297 [2021-11-23 03:33:19,799 INFO L226 Difference]: Without dead ends: 30536 [2021-11-23 03:33:19,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:19,878 INFO L933 BasicCegarLoop]: 2598 mSDtfsCounter, 1547 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:19,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1551 Valid, 4013 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 769 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 03:33:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30536 states. [2021-11-23 03:33:21,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30536 to 30532. [2021-11-23 03:33:21,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 17927 states have (on average 1.2690913147765939) internal successors, (22751), 18483 states have internal predecessors, (22751), 9677 states have call successors, (9677), 2927 states have call predecessors, (9677), 2927 states have return successors, (9751), 9597 states have call predecessors, (9751), 9677 states have call successors, (9751) [2021-11-23 03:33:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 42179 transitions. [2021-11-23 03:33:21,887 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 42179 transitions. Word has length 448 [2021-11-23 03:33:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:21,888 INFO L470 AbstractCegarLoop]: Abstraction has 30532 states and 42179 transitions. [2021-11-23 03:33:21,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 03:33:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 42179 transitions. [2021-11-23 03:33:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-23 03:33:21,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:21,943 INFO L514 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:21,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:33:21,944 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -107686618, now seen corresponding path program 1 times [2021-11-23 03:33:21,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:21,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760342207] [2021-11-23 03:33:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:21,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3731 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3731 trivial. 0 not checked. [2021-11-23 03:33:22,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:22,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760342207] [2021-11-23 03:33:22,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760342207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:22,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:22,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:33:22,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139861877] [2021-11-23 03:33:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:22,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:33:22,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:22,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:33:22,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:22,541 INFO L87 Difference]: Start difference. First operand 30532 states and 42179 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-23 03:33:25,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:28,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:29,928 INFO L93 Difference]: Finished difference Result 73735 states and 101647 transitions. [2021-11-23 03:33:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:33:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 452 [2021-11-23 03:33:29,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:30,182 INFO L225 Difference]: With dead ends: 73735 [2021-11-23 03:33:30,183 INFO L226 Difference]: Without dead ends: 43262 [2021-11-23 03:33:30,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:33:30,295 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 817 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:30,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 3074 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 581 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 03:33:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43262 states. [2021-11-23 03:33:32,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43262 to 43233. [2021-11-23 03:33:32,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43233 states, 25533 states have (on average 1.2618963694043004) internal successors, (32220), 26253 states have internal predecessors, (32220), 13463 states have call successors, (13463), 4236 states have call predecessors, (13463), 4236 states have return successors, (13565), 13305 states have call predecessors, (13565), 13463 states have call successors, (13565) [2021-11-23 03:33:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43233 states to 43233 states and 59248 transitions. [2021-11-23 03:33:33,021 INFO L78 Accepts]: Start accepts. Automaton has 43233 states and 59248 transitions. Word has length 452 [2021-11-23 03:33:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:33,022 INFO L470 AbstractCegarLoop]: Abstraction has 43233 states and 59248 transitions. [2021-11-23 03:33:33,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-23 03:33:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 43233 states and 59248 transitions. [2021-11-23 03:33:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-23 03:33:33,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:33,103 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 6, 6, 4, 4, 4, 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] [2021-11-23 03:33:33,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:33:33,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash -778713803, now seen corresponding path program 1 times [2021-11-23 03:33:33,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:33,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046923740] [2021-11-23 03:33:33,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:33,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3709 trivial. 0 not checked. [2021-11-23 03:33:34,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046923740] [2021-11-23 03:33:34,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046923740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:34,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:34,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:34,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97095737] [2021-11-23 03:33:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:34,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:34,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:34,049 INFO L87 Difference]: Start difference. First operand 43233 states and 59248 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-23 03:33:40,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:43,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:43,875 INFO L93 Difference]: Finished difference Result 107116 states and 151347 transitions. [2021-11-23 03:33:43,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:33:43,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 466 [2021-11-23 03:33:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:44,348 INFO L225 Difference]: With dead ends: 107116 [2021-11-23 03:33:44,348 INFO L226 Difference]: Without dead ends: 64252 [2021-11-23 03:33:44,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:33:44,510 INFO L933 BasicCegarLoop]: 2089 mSDtfsCounter, 2368 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 232 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:44,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2372 Valid, 3817 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 917 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 03:33:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64252 states. [2021-11-23 03:33:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64252 to 43161. [2021-11-23 03:33:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43161 states, 25491 states have (on average 1.260915617276686) internal successors, (32142), 26214 states have internal predecessors, (32142), 13412 states have call successors, (13412), 4254 states have call predecessors, (13412), 4257 states have return successors, (13514), 13254 states have call predecessors, (13514), 13412 states have call successors, (13514) [2021-11-23 03:33:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43161 states to 43161 states and 59068 transitions. [2021-11-23 03:33:47,845 INFO L78 Accepts]: Start accepts. Automaton has 43161 states and 59068 transitions. Word has length 466 [2021-11-23 03:33:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:47,847 INFO L470 AbstractCegarLoop]: Abstraction has 43161 states and 59068 transitions. [2021-11-23 03:33:47,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-23 03:33:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 43161 states and 59068 transitions. [2021-11-23 03:33:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-11-23 03:33:47,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:47,924 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 6, 6, 4, 4, 4, 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] [2021-11-23 03:33:47,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:33:47,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash 2029449743, now seen corresponding path program 1 times [2021-11-23 03:33:47,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:33:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016733562] [2021-11-23 03:33:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:47,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:33:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:33:48,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2021-11-23 03:33:48,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:33:48,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016733562] [2021-11-23 03:33:48,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016733562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:33:48,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:33:48,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:33:48,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829925416] [2021-11-23 03:33:48,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:33:48,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:33:48,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:33:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:33:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:33:48,626 INFO L87 Difference]: Start difference. First operand 43161 states and 59068 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 03:33:59,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:02,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:02,437 INFO L93 Difference]: Finished difference Result 100035 states and 136874 transitions. [2021-11-23 03:34:02,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 466 [2021-11-23 03:34:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:02,699 INFO L225 Difference]: With dead ends: 100035 [2021-11-23 03:34:02,699 INFO L226 Difference]: Without dead ends: 57243 [2021-11-23 03:34:02,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:02,812 INFO L933 BasicCegarLoop]: 2727 mSDtfsCounter, 1567 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 2070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:02,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 6122 Invalid, 2070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2062 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 03:34:02,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57243 states. [2021-11-23 03:34:05,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57243 to 57237. [2021-11-23 03:34:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57237 states, 33807 states have (on average 1.260153222705357) internal successors, (42602), 34769 states have internal predecessors, (42602), 17742 states have call successors, (17742), 5684 states have call predecessors, (17742), 5687 states have return successors, (17874), 17530 states have call predecessors, (17874), 17742 states have call successors, (17874) [2021-11-23 03:34:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57237 states to 57237 states and 78218 transitions. [2021-11-23 03:34:05,592 INFO L78 Accepts]: Start accepts. Automaton has 57237 states and 78218 transitions. Word has length 466 [2021-11-23 03:34:05,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:05,594 INFO L470 AbstractCegarLoop]: Abstraction has 57237 states and 78218 transitions. [2021-11-23 03:34:05,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-23 03:34:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 57237 states and 78218 transitions. [2021-11-23 03:34:05,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2021-11-23 03:34:05,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:05,668 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 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] [2021-11-23 03:34:05,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:34:05,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -535833492, now seen corresponding path program 1 times [2021-11-23 03:34:05,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:05,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940672635] [2021-11-23 03:34:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:05,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2021-11-23 03:34:06,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:06,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940672635] [2021-11-23 03:34:06,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940672635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:06,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:06,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:34:06,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102190692] [2021-11-23 03:34:06,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:06,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:06,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:06,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:06,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:06,006 INFO L87 Difference]: Start difference. First operand 57237 states and 78218 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-23 03:34:10,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:17,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:20,003 INFO L93 Difference]: Finished difference Result 132765 states and 181386 transitions. [2021-11-23 03:34:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:20,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 471 [2021-11-23 03:34:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:20,351 INFO L225 Difference]: With dead ends: 132765 [2021-11-23 03:34:20,351 INFO L226 Difference]: Without dead ends: 75897 [2021-11-23 03:34:20,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:20,485 INFO L933 BasicCegarLoop]: 2711 mSDtfsCounter, 1544 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 6101 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:20,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 6101 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2042 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2021-11-23 03:34:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75897 states. [2021-11-23 03:34:23,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75897 to 75891. [2021-11-23 03:34:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75891 states, 44843 states have (on average 1.259460785406864) internal successors, (56478), 46123 states have internal predecessors, (56478), 23452 states have call successors, (23452), 7592 states have call predecessors, (23452), 7595 states have return successors, (23620), 23168 states have call predecessors, (23620), 23452 states have call successors, (23620) [2021-11-23 03:34:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75891 states to 75891 states and 103550 transitions. [2021-11-23 03:34:24,129 INFO L78 Accepts]: Start accepts. Automaton has 75891 states and 103550 transitions. Word has length 471 [2021-11-23 03:34:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:24,131 INFO L470 AbstractCegarLoop]: Abstraction has 75891 states and 103550 transitions. [2021-11-23 03:34:24,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-23 03:34:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 75891 states and 103550 transitions. [2021-11-23 03:34:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-23 03:34:24,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:24,224 INFO L514 BasicCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 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] [2021-11-23 03:34:24,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:34:24,225 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1125304306, now seen corresponding path program 1 times [2021-11-23 03:34:24,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:24,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949266945] [2021-11-23 03:34:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:24,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3729 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2021-11-23 03:34:24,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949266945] [2021-11-23 03:34:24,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949266945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:24,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:24,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:34:24,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961391064] [2021-11-23 03:34:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:24,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:34:24,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:24,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:34:24,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:24,566 INFO L87 Difference]: Start difference. First operand 75891 states and 103550 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-23 03:34:32,884 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:35,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:35,882 INFO L93 Difference]: Finished difference Result 176199 states and 240365 transitions. [2021-11-23 03:34:35,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:34:35,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 473 [2021-11-23 03:34:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:36,559 INFO L225 Difference]: With dead ends: 176199 [2021-11-23 03:34:36,559 INFO L226 Difference]: Without dead ends: 100677 [2021-11-23 03:34:36,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:34:36,736 INFO L933 BasicCegarLoop]: 2731 mSDtfsCounter, 1572 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 4721 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:36,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1576 Valid, 4721 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1783 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-23 03:34:36,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100677 states. [2021-11-23 03:34:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100677 to 100671. [2021-11-23 03:34:40,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100671 states, 59511 states have (on average 1.258742081295895) internal successors, (74909), 61214 states have internal predecessors, (74909), 31016 states have call successors, (31016), 10140 states have call predecessors, (31016), 10143 states have return successors, (31232), 30636 states have call predecessors, (31232), 31016 states have call successors, (31232) [2021-11-23 03:34:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100671 states to 100671 states and 137157 transitions. [2021-11-23 03:34:41,340 INFO L78 Accepts]: Start accepts. Automaton has 100671 states and 137157 transitions. Word has length 473 [2021-11-23 03:34:41,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:41,341 INFO L470 AbstractCegarLoop]: Abstraction has 100671 states and 137157 transitions. [2021-11-23 03:34:41,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-11-23 03:34:41,341 INFO L276 IsEmpty]: Start isEmpty. Operand 100671 states and 137157 transitions. [2021-11-23 03:34:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2021-11-23 03:34:41,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:41,412 INFO L514 BasicCegarLoop]: trace histogram [36, 30, 30, 30, 30, 30, 30, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:41,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:34:41,413 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:41,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:41,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1913840093, now seen corresponding path program 1 times [2021-11-23 03:34:41,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:41,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126282150] [2021-11-23 03:34:41,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:41,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:41,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4028 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4025 trivial. 0 not checked. [2021-11-23 03:34:41,667 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:41,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126282150] [2021-11-23 03:34:41,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126282150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:41,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:41,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:41,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024768960] [2021-11-23 03:34:41,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:41,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:41,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:41,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:41,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:41,670 INFO L87 Difference]: Start difference. First operand 100671 states and 137157 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) [2021-11-23 03:34:47,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:34:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:51,467 INFO L93 Difference]: Finished difference Result 231574 states and 315208 transitions. [2021-11-23 03:34:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (69), 3 states have call predecessors, (69), 3 states have call successors, (69) Word has length 502 [2021-11-23 03:34:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:52,041 INFO L225 Difference]: With dead ends: 231574 [2021-11-23 03:34:52,041 INFO L226 Difference]: Without dead ends: 131272 [2021-11-23 03:34:52,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:52,262 INFO L933 BasicCegarLoop]: 2086 mSDtfsCounter, 812 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:52,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 3482 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 712 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 03:34:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131272 states.