./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:35:39,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:35:39,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:35:39,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:35:39,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:35:39,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:35:39,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:35:39,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:35:39,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:35:39,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:35:39,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:35:39,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:35:39,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:35:39,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:35:39,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:35:39,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:35:39,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:35:39,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:35:39,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:35:39,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:35:39,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:35:39,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:35:39,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:35:39,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:35:39,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:35:39,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:35:39,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:35:39,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:35:39,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:35:39,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:35:39,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:35:39,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:35:39,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:35:39,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:35:39,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:35:39,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:35:39,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:35:39,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:35:39,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:35:39,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:35:39,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:35:39,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:35:39,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:35:39,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:35:39,785 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:35:39,785 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:35:39,786 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:35:39,786 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:35:39,786 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:35:39,787 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:35:39,787 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:35:39,787 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:35:39,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:35:39,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:35:39,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:35:39,790 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:35:39,790 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:35:39,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:35:39,790 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:35:39,791 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:35:39,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:35:39,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:35:39,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:35:39,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:35:39,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:35:39,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:35:39,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:35:39,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:35:39,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:35:39,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:35:39,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:35:39,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:39,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:35:39,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:35:39,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:35:39,796 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:35:39,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:35:39,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:35:39,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:35:39,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:35:39,797 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_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4295d1eb99eb4c4e306792d8730363a971cf6332e7c089b8c1be6cbddd5edcb9 [2021-11-20 23:35:40,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:35:40,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:35:40,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:35:40,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:35:40,082 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:35:40,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-20 23:35:40,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/data/63ec36427/d699e095cd204aff8dddf27d7ab37705/FLAG0fd89fb6b [2021-11-20 23:35:41,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:35:41,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-20 23:35:41,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/data/63ec36427/d699e095cd204aff8dddf27d7ab37705/FLAG0fd89fb6b [2021-11-20 23:35:41,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/data/63ec36427/d699e095cd204aff8dddf27d7ab37705 [2021-11-20 23:35:41,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:35:41,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:35:41,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:41,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:35:41,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:35:41,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:41" (1/1) ... [2021-11-20 23:35:41,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6383968c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:41, skipping insertion in model container [2021-11-20 23:35:41,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:41" (1/1) ... [2021-11-20 23:35:41,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:35:41,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:35:46,589 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_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2021-11-20 23:35:46,593 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_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2021-11-20 23:35:46,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:46,721 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:35:47,351 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_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487689,487702] [2021-11-20 23:35:47,352 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_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i[487834,487847] [2021-11-20 23:35:47,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:35:47,889 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:35:47,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47 WrapperNode [2021-11-20 23:35:47,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:35:47,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:47,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:35:47,891 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:35:47,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,514 INFO L137 Inliner]: procedures = 639, calls = 3619, calls flagged for inlining = 316, calls inlined = 281, statements flattened = 8226 [2021-11-20 23:35:48,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:35:48,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:35:48,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:35:48,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:35:48,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:48,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:35:48,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:35:48,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:35:48,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:35:49,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (1/1) ... [2021-11-20 23:35:49,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:35:49,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:35:49,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:35:49,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:35:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-20 23:35:49,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-20 23:35:49,149 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:35:49,149 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:35:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:35:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:35:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2021-11-20 23:35:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2021-11-20 23:35:49,150 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-20 23:35:49,150 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-20 23:35:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:35:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:35:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-20 23:35:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-20 23:35:49,151 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_function_pointers_vf [2021-11-20 23:35:49,151 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_function_pointers_vf [2021-11-20 23:35:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-20 23:35:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-20 23:35:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-20 23:35:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-20 23:35:49,152 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:35:49,152 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:35:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:35:49,153 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:35:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_alloc_rx_buffers [2021-11-20 23:35:49,153 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_alloc_rx_buffers [2021-11-20 23:35:49,153 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:35:49,153 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:35:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_mac_addr_vf [2021-11-20 23:35:49,154 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_mac_addr_vf [2021-11-20 23:35:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_close [2021-11-20 23:35:49,154 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_close [2021-11-20 23:35:49,154 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:35:49,154 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:35:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_reset_hw_vf [2021-11-20 23:35:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_reset_hw_vf [2021-11-20 23:35:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_maybe_stop_tx [2021-11-20 23:35:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_maybe_stop_tx [2021-11-20 23:35:49,155 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:35:49,155 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:35:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:35:49,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:35:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:35:49,156 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:35:49,156 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 23:35:49,156 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 23:35:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_irq [2021-11-20 23:35:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_irq [2021-11-20 23:35:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:35:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:35:49,157 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-20 23:35:49,158 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-20 23:35:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_suspend [2021-11-20 23:35:49,158 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_suspend [2021-11-20 23:35:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:35:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 23:35:49,158 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 23:35:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-20 23:35:49,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-20 23:35:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-11-20 23:35:49,159 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-11-20 23:35:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-20 23:35:49,159 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-20 23:35:49,160 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:35:49,160 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:35:49,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:35:49,160 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_assign_vector [2021-11-20 23:35:49,160 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_assign_vector [2021-11-20 23:35:49,160 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:35:49,160 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:35:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:35:49,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:35:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:35:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_desc_unused [2021-11-20 23:35:49,161 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_desc_unused [2021-11-20 23:35:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:35:49,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:35:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:35:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_netpoll [2021-11-20 23:35:49,162 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_netpoll [2021-11-20 23:35:49,162 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:35:49,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:35:49,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-20 23:35:49,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-20 23:35:49,163 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset_interrupt_capability [2021-11-20 23:35:49,163 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset_interrupt_capability [2021-11-20 23:35:49,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:35:49,164 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:35:49,164 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_msg_vf [2021-11-20 23:35:49,164 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_msg_vf [2021-11-20 23:35:49,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:35:49,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:35:49,164 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-20 23:35:49,165 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-20 23:35:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_igbvf_exit_module_19_2 [2021-11-20 23:35:49,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_igbvf_exit_module_19_2 [2021-11-20 23:35:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:35:49,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:35:49,165 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_tx_resources [2021-11-20 23:35:49,166 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_tx_resources [2021-11-20 23:35:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_offset [2021-11-20 23:35:49,166 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_offset [2021-11-20 23:35:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:35:49,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:35:49,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-20 23:35:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-20 23:35:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-20 23:35:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-20 23:35:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:35:49,167 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:35:49,167 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2021-11-20 23:35:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2021-11-20 23:35:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure napi_enable [2021-11-20 23:35:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_enable [2021-11-20 23:35:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:35:49,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:35:49,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:35:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:35:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:35:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2021-11-20 23:35:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2021-11-20 23:35:49,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-20 23:35:49,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-20 23:35:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-20 23:35:49,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-20 23:35:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure_msix [2021-11-20 23:35:49,170 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure_msix [2021-11-20 23:35:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:35:49,170 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_open [2021-11-20 23:35:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_open [2021-11-20 23:35:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:35:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:35:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:35:49,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:35:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:35:49,171 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:35:49,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:35:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-20 23:35:49,172 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-20 23:35:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_nway_reset [2021-11-20 23:35:49,172 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_nway_reset [2021-11-20 23:35:49,172 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reset [2021-11-20 23:35:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reset [2021-11-20 23:35:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-20 23:35:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-20 23:35:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-20 23:35:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-20 23:35:49,173 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_write_posted_mbx [2021-11-20 23:35:49,173 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_write_posted_mbx [2021-11-20 23:35:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-20 23:35:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-20 23:35:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_enable [2021-11-20 23:35:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_enable [2021-11-20 23:35:49,174 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:35:49,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:35:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_map_page [2021-11-20 23:35:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_map_page [2021-11-20 23:35:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_reinit_locked [2021-11-20 23:35:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_reinit_locked [2021-11-20 23:35:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:35:49,175 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:35:49,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:35:49,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:35:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_update_stats [2021-11-20 23:35:49,176 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_update_stats [2021-11-20 23:35:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_vlan_rx_add_vid [2021-11-20 23:35:49,176 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_vlan_rx_add_vid [2021-11-20 23:35:49,176 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:35:49,177 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:35:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:35:49,177 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:35:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_bit_vf [2021-11-20 23:35:49,177 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_bit_vf [2021-11-20 23:35:49,177 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_init_hw_vf [2021-11-20 23:35:49,177 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_init_hw_vf [2021-11-20 23:35:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:35:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:35:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-20 23:35:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-20 23:35:49,178 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_ack [2021-11-20 23:35:49,178 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_ack [2021-11-20 23:35:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:35:49,179 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:35:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:35:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:35:49,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:35:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:35:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-20 23:35:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~$Pointer$~TO~~dma_addr_t~0 [2021-11-20 23:35:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_rar_set_vf [2021-11-20 23:35:49,180 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_rar_set_vf [2021-11-20 23:35:49,180 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-11-20 23:35:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-11-20 23:35:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:35:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:35:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure kmemcheck_mark_initialized [2021-11-20 23:35:49,181 INFO L138 BoogieDeclarations]: Found implementation of procedure kmemcheck_mark_initialized [2021-11-20 23:35:49,181 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_down [2021-11-20 23:35:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_down [2021-11-20 23:35:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:35:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:35:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_regs_len [2021-11-20 23:35:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_regs_len [2021-11-20 23:35:49,182 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_irq [2021-11-20 23:35:49,182 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_irq [2021-11-20 23:35:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-20 23:35:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-20 23:35:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-20 23:35:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-20 23:35:49,183 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_link_vf [2021-11-20 23:35:49,183 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_link_vf [2021-11-20 23:35:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-20 23:35:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-20 23:35:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:35:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:35:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-20 23:35:49,184 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-20 23:35:49,184 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:35:49,185 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:35:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_tx_ring [2021-11-20 23:35:49,185 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_tx_ring [2021-11-20 23:35:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_v2p_mailbox [2021-11-20 23:35:49,185 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_v2p_mailbox [2021-11-20 23:35:49,185 INFO L130 BoogieDeclarations]: Found specification of procedure debug_dma_unmap_page [2021-11-20 23:35:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_dma_unmap_page [2021-11-20 23:35:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-11-20 23:35:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-11-20 23:35:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:35:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:35:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:35:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:35:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:35:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_remove [2021-11-20 23:35:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_remove [2021-11-20 23:35:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2021-11-20 23:35:49,187 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2021-11-20 23:35:49,187 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:35:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:35:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_irq_disable [2021-11-20 23:35:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_irq_disable [2021-11-20 23:35:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:35:49,188 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_configure [2021-11-20 23:35:49,188 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_configure [2021-11-20 23:35:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_rx_resources [2021-11-20 23:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_rx_resources [2021-11-20 23:35:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_clean_rx_ring [2021-11-20 23:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_clean_rx_ring [2021-11-20 23:35:49,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-20 23:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~s32~0 [2021-11-20 23:35:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_obtain_mbx_lock_vf [2021-11-20 23:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_obtain_mbx_lock_vf [2021-11-20 23:35:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-20 23:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-20 23:35:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:35:49,190 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_check_for_ack_vf [2021-11-20 23:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_check_for_ack_vf [2021-11-20 23:35:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-20 23:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-20 23:35:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2021-11-20 23:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2021-11-20 23:35:49,191 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:35:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2021-11-20 23:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2021-11-20 23:35:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_request_irq [2021-11-20 23:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_request_irq [2021-11-20 23:35:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_resume [2021-11-20 23:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_resume [2021-11-20 23:35:49,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:35:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:35:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-20 23:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-20 23:35:49,193 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_put_txbuf [2021-11-20 23:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_put_txbuf [2021-11-20 23:35:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-20 23:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u16~0~TO~~s32~0 [2021-11-20 23:35:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_poll_for_msg [2021-11-20 23:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_poll_for_msg [2021-11-20 23:35:49,194 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-20 23:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-20 23:35:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2021-11-20 23:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2021-11-20 23:35:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:35:49,195 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-20 23:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-20 23:35:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_shutdown [2021-11-20 23:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_shutdown [2021-11-20 23:35:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:35:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-20 23:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-20 23:35:49,196 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_setup_tx_resources [2021-11-20 23:35:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_setup_tx_resources [2021-11-20 23:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:35:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_get_eeprom_len [2021-11-20 23:35:49,197 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_get_eeprom_len [2021-11-20 23:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2021-11-20 23:35:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~~bool~0~TO~~s32~0 [2021-11-20 23:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:35:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-20 23:35:49,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-20 23:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device_mem [2021-11-20 23:35:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device_mem [2021-11-20 23:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:35:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-20 23:35:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-20 23:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_mask_and_coherent [2021-11-20 23:35:49,199 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_mask_and_coherent [2021-11-20 23:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_io_resume [2021-11-20 23:35:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_io_resume [2021-11-20 23:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_free_rx_resources [2021-11-20 23:35:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_free_rx_resources [2021-11-20 23:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2021-11-20 23:35:49,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2021-11-20 23:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_set_multi [2021-11-20 23:35:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_set_multi [2021-11-20 23:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:35:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_tx_timeout [2021-11-20 23:35:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_tx_timeout [2021-11-20 23:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-20 23:35:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-20 23:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-20 23:35:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~X~$Pointer$~TO~VOID [2021-11-20 23:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure e1000_read_posted_mbx [2021-11-20 23:35:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure e1000_read_posted_mbx [2021-11-20 23:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2021-11-20 23:35:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2021-11-20 23:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-20 23:35:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-20 23:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure igbvf_up [2021-11-20 23:35:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure igbvf_up [2021-11-20 23:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:35:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_page [2021-11-20 23:35:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_page [2021-11-20 23:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:35:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-20 23:35:50,481 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:35:50,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:35:50,697 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:35:58,786 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:35:58,964 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:36:00,765 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:36:00,766 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:36:00,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:00 BoogieIcfgContainer [2021-11-20 23:36:00,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:36:00,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:36:00,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:36:00,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:36:00,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:41" (1/3) ... [2021-11-20 23:36:00,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c41583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:00, skipping insertion in model container [2021-11-20 23:36:00,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:47" (2/3) ... [2021-11-20 23:36:00,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c41583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:36:00, skipping insertion in model container [2021-11-20 23:36:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:36:00" (3/3) ... [2021-11-20 23:36:00,781 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-ethernet-intel-igbvf-igbvf.cil.i [2021-11-20 23:36:00,786 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:36:00,787 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 23:36:00,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:36:00,852 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 [2021-11-20 23:36:00,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 23:36:00,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 2300 states, 1350 states have (on average 1.2762962962962963) internal successors, (1723), 1392 states have internal predecessors, (1723), 784 states have call successors, (784), 165 states have call predecessors, (784), 164 states have return successors, (776), 762 states have call predecessors, (776), 776 states have call successors, (776) [2021-11-20 23:36:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-20 23:36:00,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:00,956 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:00,957 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1723261604, now seen corresponding path program 1 times [2021-11-20 23:36:00,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:00,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295887487] [2021-11-20 23:36:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:00,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2021-11-20 23:36:01,912 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295887487] [2021-11-20 23:36:01,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295887487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:01,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:01,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:01,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570604270] [2021-11-20 23:36:01,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:01,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:01,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:01,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:01,956 INFO L87 Difference]: Start difference. First operand has 2300 states, 1350 states have (on average 1.2762962962962963) internal successors, (1723), 1392 states have internal predecessors, (1723), 784 states have call successors, (784), 165 states have call predecessors, (784), 164 states have return successors, (776), 762 states have call predecessors, (776), 776 states have call successors, (776) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-20 23:36:03,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:08,821 INFO L93 Difference]: Finished difference Result 6133 states and 8793 transitions. [2021-11-20 23:36:08,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 282 [2021-11-20 23:36:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:08,897 INFO L225 Difference]: With dead ends: 6133 [2021-11-20 23:36:08,898 INFO L226 Difference]: Without dead ends: 3815 [2021-11-20 23:36:08,922 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 [2021-11-20 23:36:08,929 INFO L933 BasicCegarLoop]: 3426 mSDtfsCounter, 2228 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:08,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2228 Valid, 6213 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-20 23:36:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3815 states. [2021-11-20 23:36:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3815 to 3810. [2021-11-20 23:36:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3810 states, 2287 states have (on average 1.2719720157411456) internal successors, (2909), 2343 states have internal predecessors, (2909), 1236 states have call successors, (1236), 285 states have call predecessors, (1236), 285 states have return successors, (1236), 1217 states have call predecessors, (1236), 1236 states have call successors, (1236) [2021-11-20 23:36:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 5381 transitions. [2021-11-20 23:36:09,341 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 5381 transitions. Word has length 282 [2021-11-20 23:36:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:09,346 INFO L470 AbstractCegarLoop]: Abstraction has 3810 states and 5381 transitions. [2021-11-20 23:36:09,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-20 23:36:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 5381 transitions. [2021-11-20 23:36:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-20 23:36:09,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:09,365 INFO L514 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:09,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:36:09,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:09,369 INFO L85 PathProgramCache]: Analyzing trace with hash -2129106561, now seen corresponding path program 1 times [2021-11-20 23:36:09,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:09,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536303434] [2021-11-20 23:36:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:09,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2021-11-20 23:36:09,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:09,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536303434] [2021-11-20 23:36:09,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536303434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:09,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:09,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:09,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653888972] [2021-11-20 23:36:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:09,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:09,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:09,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:09,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:09,865 INFO L87 Difference]: Start difference. First operand 3810 states and 5381 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:36:12,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:14,568 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:18,390 INFO L93 Difference]: Finished difference Result 9611 states and 13506 transitions. [2021-11-20 23:36:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:18,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 294 [2021-11-20 23:36:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:18,455 INFO L225 Difference]: With dead ends: 9611 [2021-11-20 23:36:18,455 INFO L226 Difference]: Without dead ends: 5850 [2021-11-20 23:36:18,477 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 [2021-11-20 23:36:18,479 INFO L933 BasicCegarLoop]: 3346 mSDtfsCounter, 2383 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 6030 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:18,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2395 Valid, 6030 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 929 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-20 23:36:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2021-11-20 23:36:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5844. [2021-11-20 23:36:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5844 states, 3491 states have (on average 1.2606702950444) internal successors, (4401), 3579 states have internal predecessors, (4401), 1885 states have call successors, (1885), 467 states have call predecessors, (1885), 466 states have return successors, (1898), 1850 states have call predecessors, (1898), 1885 states have call successors, (1898) [2021-11-20 23:36:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5844 states to 5844 states and 8184 transitions. [2021-11-20 23:36:18,877 INFO L78 Accepts]: Start accepts. Automaton has 5844 states and 8184 transitions. Word has length 294 [2021-11-20 23:36:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:18,879 INFO L470 AbstractCegarLoop]: Abstraction has 5844 states and 8184 transitions. [2021-11-20 23:36:18,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:36:18,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5844 states and 8184 transitions. [2021-11-20 23:36:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-20 23:36:18,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:18,891 INFO L514 BasicCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 4, 4, 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] [2021-11-20 23:36:18,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:36:18,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash -850685641, now seen corresponding path program 1 times [2021-11-20 23:36:18,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:18,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106366281] [2021-11-20 23:36:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:18,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2433 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2430 trivial. 0 not checked. [2021-11-20 23:36:19,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106366281] [2021-11-20 23:36:19,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106366281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:19,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:19,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:19,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28813003] [2021-11-20 23:36:19,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:19,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:19,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:19,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:19,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:19,308 INFO L87 Difference]: Start difference. First operand 5844 states and 8184 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-20 23:36:23,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:27,041 INFO L93 Difference]: Finished difference Result 13529 states and 18938 transitions. [2021-11-20 23:36:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:27,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 329 [2021-11-20 23:36:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:27,108 INFO L225 Difference]: With dead ends: 13529 [2021-11-20 23:36:27,108 INFO L226 Difference]: Without dead ends: 7734 [2021-11-20 23:36:27,140 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 [2021-11-20 23:36:27,143 INFO L933 BasicCegarLoop]: 4590 mSDtfsCounter, 2164 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 7311 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:27,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 7311 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-11-20 23:36:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7734 states. [2021-11-20 23:36:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7734 to 7728. [2021-11-20 23:36:27,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7728 states, 4647 states have (on average 1.2631805465891974) internal successors, (5870), 4753 states have internal predecessors, (5870), 2455 states have call successors, (2455), 625 states have call predecessors, (2455), 624 states have return successors, (2468), 2414 states have call predecessors, (2468), 2455 states have call successors, (2468) [2021-11-20 23:36:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 10793 transitions. [2021-11-20 23:36:27,693 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 10793 transitions. Word has length 329 [2021-11-20 23:36:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:27,697 INFO L470 AbstractCegarLoop]: Abstraction has 7728 states and 10793 transitions. [2021-11-20 23:36:27,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-20 23:36:27,698 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 10793 transitions. [2021-11-20 23:36:27,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-11-20 23:36:27,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:27,711 INFO L514 BasicCegarLoop]: trace histogram [30, 24, 24, 24, 24, 24, 24, 8, 8, 3, 3, 3, 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] [2021-11-20 23:36:27,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:36:27,712 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:27,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash -405334353, now seen corresponding path program 1 times [2021-11-20 23:36:27,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:27,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729135318] [2021-11-20 23:36:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:27,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2639 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2622 trivial. 0 not checked. [2021-11-20 23:36:28,176 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729135318] [2021-11-20 23:36:28,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729135318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:28,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:28,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:36:28,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448928980] [2021-11-20 23:36:28,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:28,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:36:28,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:36:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:36:28,180 INFO L87 Difference]: Start difference. First operand 7728 states and 10793 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-20 23:36:30,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:34,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:34,158 INFO L93 Difference]: Finished difference Result 18467 states and 25747 transitions. [2021-11-20 23:36:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:36:34,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 393 [2021-11-20 23:36:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:34,261 INFO L225 Difference]: With dead ends: 18467 [2021-11-20 23:36:34,261 INFO L226 Difference]: Without dead ends: 10788 [2021-11-20 23:36:34,298 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 [2021-11-20 23:36:34,299 INFO L933 BasicCegarLoop]: 4835 mSDtfsCounter, 2906 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2919 SdHoareTripleChecker+Valid, 7183 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:34,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2919 Valid, 7183 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1232 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-20 23:36:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2021-11-20 23:36:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10782. [2021-11-20 23:36:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10782 states, 6475 states have (on average 1.257915057915058) internal successors, (8145), 6618 states have internal predecessors, (8145), 3407 states have call successors, (3407), 900 states have call predecessors, (3407), 898 states have return successors, (3439), 3353 states have call predecessors, (3439), 3407 states have call successors, (3439) [2021-11-20 23:36:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10782 states to 10782 states and 14991 transitions. [2021-11-20 23:36:34,961 INFO L78 Accepts]: Start accepts. Automaton has 10782 states and 14991 transitions. Word has length 393 [2021-11-20 23:36:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:34,963 INFO L470 AbstractCegarLoop]: Abstraction has 10782 states and 14991 transitions. [2021-11-20 23:36:34,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 3 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-20 23:36:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 10782 states and 14991 transitions. [2021-11-20 23:36:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-11-20 23:36:34,981 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:34,982 INFO L514 BasicCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:34,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:36:34,982 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1543942694, now seen corresponding path program 1 times [2021-11-20 23:36:34,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:34,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579478086] [2021-11-20 23:36:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:34,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2856 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2856 trivial. 0 not checked. [2021-11-20 23:36:36,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:36,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579478086] [2021-11-20 23:36:36,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579478086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:36,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:36,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:36:36,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849977096] [2021-11-20 23:36:36,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:36,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:36:36,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:36:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:36:36,117 INFO L87 Difference]: Start difference. First operand 10782 states and 14991 transitions. Second operand has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-20 23:36:40,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:41,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:45,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:46,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:36:53,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:36:53,961 INFO L93 Difference]: Finished difference Result 13303 states and 18367 transitions. [2021-11-20 23:36:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 23:36:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) Word has length 442 [2021-11-20 23:36:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:36:54,036 INFO L225 Difference]: With dead ends: 13303 [2021-11-20 23:36:54,037 INFO L226 Difference]: Without dead ends: 13301 [2021-11-20 23:36:54,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:36:54,047 INFO L933 BasicCegarLoop]: 3336 mSDtfsCounter, 1971 mSDsluCounter, 13514 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 15036 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:36:54,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 15036 Invalid, 3299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 3296 Invalid, 1 Unknown, 0 Unchecked, 17.0s Time] [2021-11-20 23:36:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13301 states. [2021-11-20 23:36:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13301 to 13296. [2021-11-20 23:36:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13296 states, 7999 states have (on average 1.2539067383422928) internal successors, (10030), 8162 states have internal predecessors, (10030), 4147 states have call successors, (4147), 1150 states have call predecessors, (4147), 1148 states have return successors, (4179), 4085 states have call predecessors, (4179), 4147 states have call successors, (4179) [2021-11-20 23:36:55,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13296 states to 13296 states and 18356 transitions. [2021-11-20 23:36:55,059 INFO L78 Accepts]: Start accepts. Automaton has 13296 states and 18356 transitions. Word has length 442 [2021-11-20 23:36:55,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:36:55,061 INFO L470 AbstractCegarLoop]: Abstraction has 13296 states and 18356 transitions. [2021-11-20 23:36:55,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (46), 3 states have call predecessors, (46), 2 states have call successors, (46) [2021-11-20 23:36:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 13296 states and 18356 transitions. [2021-11-20 23:36:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2021-11-20 23:36:55,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:36:55,085 INFO L514 BasicCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:36:55,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:36:55,085 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:36:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:36:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1474524655, now seen corresponding path program 1 times [2021-11-20 23:36:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:36:55,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958032692] [2021-11-20 23:36:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:36:55,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:36:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:36:55,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 2856 trivial. 0 not checked. [2021-11-20 23:36:55,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:36:55,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958032692] [2021-11-20 23:36:55,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958032692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:36:55,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:36:55,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:36:55,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097853057] [2021-11-20 23:36:55,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:36:55,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:36:55,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:36:55,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:36:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:36:55,484 INFO L87 Difference]: Start difference. First operand 13296 states and 18356 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:36:59,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:01,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:05,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:08,916 INFO L93 Difference]: Finished difference Result 28771 states and 39744 transitions. [2021-11-20 23:37:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:37:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 474 [2021-11-20 23:37:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:09,007 INFO L225 Difference]: With dead ends: 28771 [2021-11-20 23:37:09,007 INFO L226 Difference]: Without dead ends: 15542 [2021-11-20 23:37:09,065 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 [2021-11-20 23:37:09,066 INFO L933 BasicCegarLoop]: 4157 mSDtfsCounter, 2179 mSDsluCounter, 6904 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 10018 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:09,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2186 Valid, 10018 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2787 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2021-11-20 23:37:09,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15542 states. [2021-11-20 23:37:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15542 to 15535. [2021-11-20 23:37:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15535 states, 9387 states have (on average 1.256844572280814) internal successors, (11798), 9569 states have internal predecessors, (11798), 4801 states have call successors, (4801), 1347 states have call predecessors, (4801), 1345 states have return successors, (4840), 4732 states have call predecessors, (4840), 4801 states have call successors, (4840) [2021-11-20 23:37:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15535 states to 15535 states and 21439 transitions. [2021-11-20 23:37:10,232 INFO L78 Accepts]: Start accepts. Automaton has 15535 states and 21439 transitions. Word has length 474 [2021-11-20 23:37:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:10,233 INFO L470 AbstractCegarLoop]: Abstraction has 15535 states and 21439 transitions. [2021-11-20 23:37:10,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:37:10,234 INFO L276 IsEmpty]: Start isEmpty. Operand 15535 states and 21439 transitions. [2021-11-20 23:37:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-20 23:37:10,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:10,257 INFO L514 BasicCegarLoop]: trace histogram [33, 26, 26, 26, 26, 26, 26, 11, 11, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:10,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:37:10,257 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:10,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:10,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1339242154, now seen corresponding path program 1 times [2021-11-20 23:37:10,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:10,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907280146] [2021-11-20 23:37:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:10,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3214 trivial. 0 not checked. [2021-11-20 23:37:10,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:10,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907280146] [2021-11-20 23:37:10,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907280146] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:10,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:10,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 23:37:10,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788294666] [2021-11-20 23:37:10,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:10,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:37:10,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:37:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:37:10,849 INFO L87 Difference]: Start difference. First operand 15535 states and 21439 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-20 23:37:13,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:14,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:17,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:21,016 INFO L93 Difference]: Finished difference Result 37884 states and 54134 transitions. [2021-11-20 23:37:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:37:21,016 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), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 480 [2021-11-20 23:37:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:21,154 INFO L225 Difference]: With dead ends: 37884 [2021-11-20 23:37:21,154 INFO L226 Difference]: Without dead ends: 25227 [2021-11-20 23:37:21,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:21,208 INFO L933 BasicCegarLoop]: 3954 mSDtfsCounter, 1719 mSDsluCounter, 7719 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 488 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 10675 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:21,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 10675 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1591 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-11-20 23:37:21,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25227 states. [2021-11-20 23:37:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25227 to 15541. [2021-11-20 23:37:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15541 states, 9393 states have (on average 1.2566805067603535) internal successors, (11804), 9575 states have internal predecessors, (11804), 4801 states have call successors, (4801), 1347 states have call predecessors, (4801), 1345 states have return successors, (4840), 4732 states have call predecessors, (4840), 4801 states have call successors, (4840) [2021-11-20 23:37:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15541 states to 15541 states and 21445 transitions. [2021-11-20 23:37:22,795 INFO L78 Accepts]: Start accepts. Automaton has 15541 states and 21445 transitions. Word has length 480 [2021-11-20 23:37:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:22,796 INFO L470 AbstractCegarLoop]: Abstraction has 15541 states and 21445 transitions. [2021-11-20 23:37:22,797 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), 2 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-20 23:37:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 15541 states and 21445 transitions. [2021-11-20 23:37:22,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-11-20 23:37:22,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:22,811 INFO L514 BasicCegarLoop]: trace histogram [33, 26, 26, 26, 26, 26, 26, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:22,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:37:22,811 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash 455618949, now seen corresponding path program 1 times [2021-11-20 23:37:22,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:22,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833523756] [2021-11-20 23:37:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:22,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3303 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 3253 trivial. 0 not checked. [2021-11-20 23:37:23,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:23,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833523756] [2021-11-20 23:37:23,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833523756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:23,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:23,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:37:23,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250384080] [2021-11-20 23:37:23,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:23,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:37:23,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:37:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:23,334 INFO L87 Difference]: Start difference. First operand 15541 states and 21445 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 23:37:24,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:27,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:29,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:32,601 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:34,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:37:38,022 INFO L93 Difference]: Finished difference Result 28205 states and 39073 transitions. [2021-11-20 23:37:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:37:38,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) Word has length 497 [2021-11-20 23:37:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:37:38,093 INFO L225 Difference]: With dead ends: 28205 [2021-11-20 23:37:38,094 INFO L226 Difference]: Without dead ends: 15565 [2021-11-20 23:37:38,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:37:38,136 INFO L933 BasicCegarLoop]: 2771 mSDtfsCounter, 0 mSDsluCounter, 9607 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11081 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:37:38,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 11081 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1741 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2021-11-20 23:37:38,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15565 states. [2021-11-20 23:37:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15565 to 15549. [2021-11-20 23:37:38,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15549 states, 9399 states have (on average 1.256516650707522) internal successors, (11810), 9581 states have internal predecessors, (11810), 4801 states have call successors, (4801), 1347 states have call predecessors, (4801), 1347 states have return successors, (4849), 4734 states have call predecessors, (4849), 4801 states have call successors, (4849) [2021-11-20 23:37:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15549 states to 15549 states and 21460 transitions. [2021-11-20 23:37:39,067 INFO L78 Accepts]: Start accepts. Automaton has 15549 states and 21460 transitions. Word has length 497 [2021-11-20 23:37:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:37:39,068 INFO L470 AbstractCegarLoop]: Abstraction has 15549 states and 21460 transitions. [2021-11-20 23:37:39,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (59), 2 states have call predecessors, (59), 2 states have return successors, (55), 3 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-20 23:37:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 15549 states and 21460 transitions. [2021-11-20 23:37:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2021-11-20 23:37:39,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:37:39,086 INFO L514 BasicCegarLoop]: trace histogram [33, 26, 26, 26, 26, 26, 25, 15, 15, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:37:39,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:37:39,087 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:37:39,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:37:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 118030262, now seen corresponding path program 1 times [2021-11-20 23:37:39,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:37:39,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475548505] [2021-11-20 23:37:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:37:39,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:37:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:37:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3392 trivial. 0 not checked. [2021-11-20 23:37:40,259 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:37:40,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475548505] [2021-11-20 23:37:40,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475548505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:37:40,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:37:40,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:37:40,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597606650] [2021-11-20 23:37:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:37:40,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:37:40,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:37:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:37:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:37:40,264 INFO L87 Difference]: Start difference. First operand 15549 states and 21460 transitions. Second operand has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-20 23:37:44,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:46,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:47,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:52,728 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:37:55,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:00,550 INFO L93 Difference]: Finished difference Result 15565 states and 21499 transitions. [2021-11-20 23:38:00,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:38:00,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) Word has length 510 [2021-11-20 23:38:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:00,612 INFO L225 Difference]: With dead ends: 15565 [2021-11-20 23:38:00,612 INFO L226 Difference]: Without dead ends: 15563 [2021-11-20 23:38:00,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:38:00,619 INFO L933 BasicCegarLoop]: 2774 mSDtfsCounter, 3051 mSDsluCounter, 8106 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 9582 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:00,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3053 Valid, 9582 Invalid, 3253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3248 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2021-11-20 23:38:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15563 states. [2021-11-20 23:38:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15563 to 15547. [2021-11-20 23:38:01,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15547 states, 9398 states have (on average 1.2556927005745904) internal successors, (11801), 9579 states have internal predecessors, (11801), 4801 states have call successors, (4801), 1347 states have call predecessors, (4801), 1347 states have return successors, (4849), 4734 states have call predecessors, (4849), 4801 states have call successors, (4849) [2021-11-20 23:38:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15547 states to 15547 states and 21451 transitions. [2021-11-20 23:38:01,744 INFO L78 Accepts]: Start accepts. Automaton has 15547 states and 21451 transitions. Word has length 510 [2021-11-20 23:38:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:01,745 INFO L470 AbstractCegarLoop]: Abstraction has 15547 states and 21451 transitions. [2021-11-20 23:38:01,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (58), 3 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-20 23:38:01,746 INFO L276 IsEmpty]: Start isEmpty. Operand 15547 states and 21451 transitions. [2021-11-20 23:38:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2021-11-20 23:38:01,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:01,775 INFO L514 BasicCegarLoop]: trace histogram [37, 26, 26, 26, 26, 26, 26, 15, 15, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:01,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:38:01,775 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1806778443, now seen corresponding path program 1 times [2021-11-20 23:38:01,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:01,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049067351] [2021-11-20 23:38:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:01,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3710 trivial. 0 not checked. [2021-11-20 23:38:02,155 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:02,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049067351] [2021-11-20 23:38:02,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049067351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:02,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:02,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:02,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916911557] [2021-11-20 23:38:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:02,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:02,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:02,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:02,158 INFO L87 Difference]: Start difference. First operand 15547 states and 21451 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:38:05,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:08,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:10,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:12,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:16,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:16,385 INFO L93 Difference]: Finished difference Result 34069 states and 46987 transitions. [2021-11-20 23:38:16,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:38:16,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) Word has length 580 [2021-11-20 23:38:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:16,469 INFO L225 Difference]: With dead ends: 34069 [2021-11-20 23:38:16,470 INFO L226 Difference]: Without dead ends: 18589 [2021-11-20 23:38:16,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:16,520 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 2219 mSDsluCounter, 13787 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 16399 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:16,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 16399 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2788 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2021-11-20 23:38:16,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18589 states. [2021-11-20 23:38:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18589 to 18578. [2021-11-20 23:38:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18578 states, 11247 states have (on average 1.2574908864586112) internal successors, (14143), 11459 states have internal predecessors, (14143), 5703 states have call successors, (5703), 1624 states have call predecessors, (5703), 1627 states have return successors, (5760), 5630 states have call predecessors, (5760), 5703 states have call successors, (5760) [2021-11-20 23:38:18,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18578 states to 18578 states and 25606 transitions. [2021-11-20 23:38:18,161 INFO L78 Accepts]: Start accepts. Automaton has 18578 states and 25606 transitions. Word has length 580 [2021-11-20 23:38:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:18,166 INFO L470 AbstractCegarLoop]: Abstraction has 18578 states and 25606 transitions. [2021-11-20 23:38:18,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:38:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 18578 states and 25606 transitions. [2021-11-20 23:38:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2021-11-20 23:38:18,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:18,197 INFO L514 BasicCegarLoop]: trace histogram [37, 26, 26, 26, 26, 26, 26, 15, 15, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:18,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:38:18,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash -958098122, now seen corresponding path program 1 times [2021-11-20 23:38:18,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:18,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042768750] [2021-11-20 23:38:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:18,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3710 trivial. 0 not checked. [2021-11-20 23:38:18,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:18,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042768750] [2021-11-20 23:38:18,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042768750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:18,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:18,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:18,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524863342] [2021-11-20 23:38:18,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:18,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:18,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:18,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:18,580 INFO L87 Difference]: Start difference. First operand 18578 states and 25606 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:38:21,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:23,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:24,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:27,337 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:29,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:32,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:35,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:38:40,705 INFO L93 Difference]: Finished difference Result 40083 states and 55225 transitions. [2021-11-20 23:38:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:38:40,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) Word has length 581 [2021-11-20 23:38:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:38:40,784 INFO L225 Difference]: With dead ends: 40083 [2021-11-20 23:38:40,785 INFO L226 Difference]: Without dead ends: 21572 [2021-11-20 23:38:40,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:40,839 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 2224 mSDsluCounter, 13994 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 8 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 16668 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:38:40,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 16668 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2843 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2021-11-20 23:38:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21572 states. [2021-11-20 23:38:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21572 to 21561. [2021-11-20 23:38:42,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21561 states, 13078 states have (on average 1.2584493041749503) internal successors, (16458), 13315 states have internal predecessors, (16458), 6575 states have call successors, (6575), 1901 states have call predecessors, (6575), 1907 states have return successors, (6641), 6496 states have call predecessors, (6641), 6575 states have call successors, (6641) [2021-11-20 23:38:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21561 states to 21561 states and 29674 transitions. [2021-11-20 23:38:42,402 INFO L78 Accepts]: Start accepts. Automaton has 21561 states and 29674 transitions. Word has length 581 [2021-11-20 23:38:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:38:42,404 INFO L470 AbstractCegarLoop]: Abstraction has 21561 states and 29674 transitions. [2021-11-20 23:38:42,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:38:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 21561 states and 29674 transitions. [2021-11-20 23:38:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2021-11-20 23:38:42,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:38:42,441 INFO L514 BasicCegarLoop]: trace histogram [37, 26, 26, 26, 26, 26, 26, 15, 15, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:38:42,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:38:42,442 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:38:42,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:38:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1518581353, now seen corresponding path program 1 times [2021-11-20 23:38:42,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:38:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520702923] [2021-11-20 23:38:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:38:42,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:38:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:38:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3710 trivial. 0 not checked. [2021-11-20 23:38:42,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:38:42,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520702923] [2021-11-20 23:38:42,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520702923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:38:42,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:38:42,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:38:42,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588947445] [2021-11-20 23:38:42,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:38:42,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:38:42,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:38:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:38:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:38:42,822 INFO L87 Difference]: Start difference. First operand 21561 states and 29674 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:38:46,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:47,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:49,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:38:52,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:00,195 INFO L93 Difference]: Finished difference Result 45996 states and 63303 transitions. [2021-11-20 23:39:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:39:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) Word has length 582 [2021-11-20 23:39:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:00,269 INFO L225 Difference]: With dead ends: 45996 [2021-11-20 23:39:00,269 INFO L226 Difference]: Without dead ends: 24502 [2021-11-20 23:39:00,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:00,318 INFO L933 BasicCegarLoop]: 4482 mSDtfsCounter, 2181 mSDsluCounter, 13619 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 16151 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:00,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 16151 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2813 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2021-11-20 23:39:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24502 states. [2021-11-20 23:39:01,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24502 to 24491. [2021-11-20 23:39:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24491 states, 14875 states have (on average 1.2589579831932773) internal successors, (18727), 15137 states have internal predecessors, (18727), 7438 states have call successors, (7438), 2168 states have call predecessors, (7438), 2177 states have return successors, (7513), 7353 states have call predecessors, (7513), 7438 states have call successors, (7513) [2021-11-20 23:39:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24491 states to 24491 states and 33678 transitions. [2021-11-20 23:39:02,009 INFO L78 Accepts]: Start accepts. Automaton has 24491 states and 33678 transitions. Word has length 582 [2021-11-20 23:39:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:02,010 INFO L470 AbstractCegarLoop]: Abstraction has 24491 states and 33678 transitions. [2021-11-20 23:39:02,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:39:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 24491 states and 33678 transitions. [2021-11-20 23:39:02,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2021-11-20 23:39:02,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:02,049 INFO L514 BasicCegarLoop]: trace histogram [37, 26, 26, 26, 26, 26, 26, 15, 15, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:02,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:39:02,049 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:02,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1902550623, now seen corresponding path program 1 times [2021-11-20 23:39:02,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:02,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122608732] [2021-11-20 23:39:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:02,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3710 trivial. 0 not checked. [2021-11-20 23:39:02,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122608732] [2021-11-20 23:39:02,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122608732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:02,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:02,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:39:02,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182861937] [2021-11-20 23:39:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:02,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:02,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:02,429 INFO L87 Difference]: Start difference. First operand 24491 states and 33678 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:39:05,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:08,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:10,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:16,428 INFO L93 Difference]: Finished difference Result 52107 states and 71659 transitions. [2021-11-20 23:39:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:39:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) Word has length 583 [2021-11-20 23:39:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:16,540 INFO L225 Difference]: With dead ends: 52107 [2021-11-20 23:39:16,540 INFO L226 Difference]: Without dead ends: 27683 [2021-11-20 23:39:16,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:16,589 INFO L933 BasicCegarLoop]: 4411 mSDtfsCounter, 2188 mSDsluCounter, 13412 mSDsCounter, 0 mSdLazyCounter, 2710 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 15956 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2710 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:16,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2195 Valid, 15956 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2710 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2021-11-20 23:39:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27683 states. [2021-11-20 23:39:18,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27683 to 27672. [2021-11-20 23:39:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27672 states, 16810 states have (on average 1.257703747769185) internal successors, (21142), 17095 states have internal predecessors, (21142), 8387 states have call successors, (8387), 2462 states have call predecessors, (8387), 2474 states have return successors, (8480), 8298 states have call predecessors, (8480), 8387 states have call successors, (8480) [2021-11-20 23:39:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27672 states to 27672 states and 38009 transitions. [2021-11-20 23:39:18,423 INFO L78 Accepts]: Start accepts. Automaton has 27672 states and 38009 transitions. Word has length 583 [2021-11-20 23:39:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:18,424 INFO L470 AbstractCegarLoop]: Abstraction has 27672 states and 38009 transitions. [2021-11-20 23:39:18,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:39:18,425 INFO L276 IsEmpty]: Start isEmpty. Operand 27672 states and 38009 transitions. [2021-11-20 23:39:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2021-11-20 23:39:18,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:18,456 INFO L514 BasicCegarLoop]: trace histogram [37, 26, 26, 26, 26, 26, 26, 15, 15, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:18,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:39:18,457 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:18,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1887403312, now seen corresponding path program 1 times [2021-11-20 23:39:18,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:18,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576671537] [2021-11-20 23:39:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:18,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 3710 trivial. 0 not checked. [2021-11-20 23:39:18,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:18,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576671537] [2021-11-20 23:39:18,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576671537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:18,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:39:18,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:39:18,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022275926] [2021-11-20 23:39:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:18,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:39:18,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:39:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:18,831 INFO L87 Difference]: Start difference. First operand 27672 states and 38009 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:39:26,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:31,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:31,840 INFO L93 Difference]: Finished difference Result 57937 states and 79602 transitions. [2021-11-20 23:39:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:39:31,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) Word has length 584 [2021-11-20 23:39:31,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:31,964 INFO L225 Difference]: With dead ends: 57937 [2021-11-20 23:39:31,964 INFO L226 Difference]: Without dead ends: 30332 [2021-11-20 23:39:32,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:32,044 INFO L933 BasicCegarLoop]: 4418 mSDtfsCounter, 2182 mSDsluCounter, 13426 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 15966 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:32,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2182 Valid, 15966 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2729 Invalid, 1 Unknown, 0 Unchecked, 10.9s Time] [2021-11-20 23:39:32,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30332 states. [2021-11-20 23:39:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30332 to 30321. [2021-11-20 23:39:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30321 states, 18455 states have (on average 1.2585749119479817) internal successors, (23227), 18759 states have internal predecessors, (23227), 9146 states have call successors, (9146), 2707 states have call predecessors, (9146), 2719 states have return successors, (9245), 9050 states have call predecessors, (9245), 9146 states have call successors, (9245) [2021-11-20 23:39:34,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30321 states to 30321 states and 41618 transitions. [2021-11-20 23:39:34,027 INFO L78 Accepts]: Start accepts. Automaton has 30321 states and 41618 transitions. Word has length 584 [2021-11-20 23:39:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:34,028 INFO L470 AbstractCegarLoop]: Abstraction has 30321 states and 41618 transitions. [2021-11-20 23:39:34,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 4 states have internal predecessors, (160), 3 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (67), 4 states have call predecessors, (67), 3 states have call successors, (67) [2021-11-20 23:39:34,028 INFO L276 IsEmpty]: Start isEmpty. Operand 30321 states and 41618 transitions. [2021-11-20 23:39:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2021-11-20 23:39:34,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:34,053 INFO L514 BasicCegarLoop]: trace histogram [34, 26, 26, 26, 26, 26, 25, 17, 17, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:34,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:39:34,054 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 788643221, now seen corresponding path program 1 times [2021-11-20 23:39:34,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:34,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334047044] [2021-11-20 23:39:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:34,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:34,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3645 trivial. 0 not checked. [2021-11-20 23:39:34,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334047044] [2021-11-20 23:39:34,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334047044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:39:34,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142467557] [2021-11-20 23:39:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:34,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:39:34,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:39:34,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:39:34,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:39:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:36,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 6532 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 23:39:36,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3657 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 3451 trivial. 0 not checked. [2021-11-20 23:39:37,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:39:37,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142467557] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:37,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:39:37,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-11-20 23:39:37,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467076941] [2021-11-20 23:39:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:37,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:39:37,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:39:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 23:39:37,848 INFO L87 Difference]: Start difference. First operand 30321 states and 41618 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 2 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-20 23:39:41,113 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:43,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:45,990 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:39:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:39:51,312 INFO L93 Difference]: Finished difference Result 69932 states and 99230 transitions. [2021-11-20 23:39:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:39:51,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 2 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 659 [2021-11-20 23:39:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:39:51,460 INFO L225 Difference]: With dead ends: 69932 [2021-11-20 23:39:51,460 INFO L226 Difference]: Without dead ends: 45978 [2021-11-20 23:39:51,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:39:51,665 INFO L933 BasicCegarLoop]: 4184 mSDtfsCounter, 1207 mSDsluCounter, 7415 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 520 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 10701 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:39:51,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 10701 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [520 Valid, 1551 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2021-11-20 23:39:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45978 states. [2021-11-20 23:39:53,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45978 to 30325. [2021-11-20 23:39:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30325 states, 18459 states have (on average 1.2585188796792892) internal successors, (23231), 18763 states have internal predecessors, (23231), 9146 states have call successors, (9146), 2707 states have call predecessors, (9146), 2719 states have return successors, (9245), 9050 states have call predecessors, (9245), 9146 states have call successors, (9245) [2021-11-20 23:39:54,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30325 states to 30325 states and 41622 transitions. [2021-11-20 23:39:54,139 INFO L78 Accepts]: Start accepts. Automaton has 30325 states and 41622 transitions. Word has length 659 [2021-11-20 23:39:54,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:39:54,140 INFO L470 AbstractCegarLoop]: Abstraction has 30325 states and 41622 transitions. [2021-11-20 23:39:54,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 2 states have call successors, (87), 2 states have call predecessors, (87), 2 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2021-11-20 23:39:54,141 INFO L276 IsEmpty]: Start isEmpty. Operand 30325 states and 41622 transitions. [2021-11-20 23:39:54,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2021-11-20 23:39:54,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:39:54,189 INFO L514 BasicCegarLoop]: trace histogram [38, 26, 26, 26, 26, 26, 26, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:39:54,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:39:54,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 23:39:54,405 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:39:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:39:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1152876462, now seen corresponding path program 1 times [2021-11-20 23:39:54,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:39:54,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170079692] [2021-11-20 23:39:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:54,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:39:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3954 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 3880 trivial. 0 not checked. [2021-11-20 23:39:54,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:39:54,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170079692] [2021-11-20 23:39:54,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170079692] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:39:54,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594639772] [2021-11-20 23:39:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:39:54,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:39:54,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:39:54,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:39:54,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:39:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:39:56,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 5807 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:39:56,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:39:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3954 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 3814 trivial. 0 not checked. [2021-11-20 23:39:57,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:39:57,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594639772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:39:57,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:39:57,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-20 23:39:57,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947588631] [2021-11-20 23:39:57,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:39:57,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:39:57,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:39:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:39:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:39:57,691 INFO L87 Difference]: Start difference. First operand 30325 states and 41622 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-20 23:39:59,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:01,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:03,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:06,505 INFO L93 Difference]: Finished difference Result 64186 states and 87965 transitions. [2021-11-20 23:40:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:06,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) Word has length 621 [2021-11-20 23:40:06,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:06,647 INFO L225 Difference]: With dead ends: 64186 [2021-11-20 23:40:06,647 INFO L226 Difference]: Without dead ends: 33928 [2021-11-20 23:40:06,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:06,728 INFO L933 BasicCegarLoop]: 3606 mSDtfsCounter, 2984 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 5870 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:06,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2984 Valid, 5870 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-20 23:40:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33928 states. [2021-11-20 23:40:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33928 to 33921. [2021-11-20 23:40:09,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33921 states, 20652 states have (on average 1.2587158628704243) internal successors, (25995), 20980 states have internal predecessors, (25995), 10154 states have call successors, (10154), 3102 states have call predecessors, (10154), 3114 states have return successors, (10253), 10050 states have call predecessors, (10253), 10154 states have call successors, (10253) [2021-11-20 23:40:09,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33921 states to 33921 states and 46402 transitions. [2021-11-20 23:40:09,300 INFO L78 Accepts]: Start accepts. Automaton has 33921 states and 46402 transitions. Word has length 621 [2021-11-20 23:40:09,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:09,301 INFO L470 AbstractCegarLoop]: Abstraction has 33921 states and 46402 transitions. [2021-11-20 23:40:09,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 3 states have call successors, (74), 3 states have call predecessors, (74), 3 states have return successors, (71), 3 states have call predecessors, (71), 3 states have call successors, (71) [2021-11-20 23:40:09,302 INFO L276 IsEmpty]: Start isEmpty. Operand 33921 states and 46402 transitions. [2021-11-20 23:40:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2021-11-20 23:40:09,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:09,343 INFO L514 BasicCegarLoop]: trace histogram [38, 26, 26, 26, 26, 26, 26, 16, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:09,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 23:40:09,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ff7a4d-8e97-46e5-8fe6-f77749516ba3/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-20 23:40:09,557 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:40:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash -464145894, now seen corresponding path program 1 times [2021-11-20 23:40:09,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:09,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674847108] [2021-11-20 23:40:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:09,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3932 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 3873 trivial. 0 not checked. [2021-11-20 23:40:09,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:09,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674847108] [2021-11-20 23:40:09,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674847108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:09,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:09,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:40:09,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866459995] [2021-11-20 23:40:09,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:09,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:09,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:09,996 INFO L87 Difference]: Start difference. First operand 33921 states and 46402 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2021-11-20 23:40:12,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:13,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:16,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:19,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:22,786 INFO L93 Difference]: Finished difference Result 70825 states and 96912 transitions. [2021-11-20 23:40:22,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:22,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) Word has length 630 [2021-11-20 23:40:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:22,927 INFO L225 Difference]: With dead ends: 70825 [2021-11-20 23:40:22,928 INFO L226 Difference]: Without dead ends: 36971 [2021-11-20 23:40:23,017 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 [2021-11-20 23:40:23,018 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 2276 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 7380 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:23,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2283 Valid, 7380 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1256 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-11-20 23:40:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36971 states. [2021-11-20 23:40:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36971 to 36966. [2021-11-20 23:40:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36966 states, 22502 states have (on average 1.259176962047818) internal successors, (28334), 22860 states have internal predecessors, (28334), 11070 states have call successors, (11070), 3381 states have call predecessors, (11070), 3393 states have return successors, (11188), 10957 states have call predecessors, (11188), 11070 states have call successors, (11188) [2021-11-20 23:40:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36966 states to 36966 states and 50592 transitions. [2021-11-20 23:40:25,591 INFO L78 Accepts]: Start accepts. Automaton has 36966 states and 50592 transitions. Word has length 630 [2021-11-20 23:40:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:25,592 INFO L470 AbstractCegarLoop]: Abstraction has 36966 states and 50592 transitions. [2021-11-20 23:40:25,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 3 states have call successors, (78), 2 states have call predecessors, (78), 1 states have return successors, (75), 3 states have call predecessors, (75), 3 states have call successors, (75) [2021-11-20 23:40:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 36966 states and 50592 transitions. [2021-11-20 23:40:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2021-11-20 23:40:25,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:25,637 INFO L514 BasicCegarLoop]: trace histogram [38, 26, 26, 26, 26, 26, 26, 17, 17, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:25,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 23:40:25,638 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:40:25,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1593917395, now seen corresponding path program 1 times [2021-11-20 23:40:25,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:25,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685048845] [2021-11-20 23:40:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:25,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4006 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 3944 trivial. 0 not checked. [2021-11-20 23:40:26,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:26,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685048845] [2021-11-20 23:40:26,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685048845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:26,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:26,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:40:26,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490894355] [2021-11-20 23:40:26,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:26,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:26,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:26,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:26,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:26,042 INFO L87 Difference]: Start difference. First operand 36966 states and 50592 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:40:30,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:35,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:35,780 INFO L93 Difference]: Finished difference Result 76046 states and 104120 transitions. [2021-11-20 23:40:35,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:35,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 645 [2021-11-20 23:40:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:35,930 INFO L225 Difference]: With dead ends: 76046 [2021-11-20 23:40:35,930 INFO L226 Difference]: Without dead ends: 39147 [2021-11-20 23:40:36,019 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 [2021-11-20 23:40:36,020 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 2157 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 7319 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:36,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2157 Valid, 7319 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 23:40:36,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39147 states. [2021-11-20 23:40:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39147 to 39142. [2021-11-20 23:40:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39142 states, 23839 states have (on average 1.2599102311338564) internal successors, (30035), 24216 states have internal predecessors, (30035), 11721 states have call successors, (11721), 3569 states have call predecessors, (11721), 3581 states have return successors, (11839), 11601 states have call predecessors, (11839), 11721 states have call successors, (11839) [2021-11-20 23:40:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39142 states to 39142 states and 53595 transitions. [2021-11-20 23:40:38,851 INFO L78 Accepts]: Start accepts. Automaton has 39142 states and 53595 transitions. Word has length 645 [2021-11-20 23:40:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:38,852 INFO L470 AbstractCegarLoop]: Abstraction has 39142 states and 53595 transitions. [2021-11-20 23:40:38,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 3 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2021-11-20 23:40:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 39142 states and 53595 transitions. [2021-11-20 23:40:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2021-11-20 23:40:38,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:38,886 INFO L514 BasicCegarLoop]: trace histogram [40, 26, 26, 26, 26, 26, 26, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:38,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 23:40:38,887 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_nonatomicErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:40:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1433540791, now seen corresponding path program 1 times [2021-11-20 23:40:38,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:40:38,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980851126] [2021-11-20 23:40:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:40:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4203 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 4124 trivial. 0 not checked. [2021-11-20 23:40:39,352 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:40:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980851126] [2021-11-20 23:40:39,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980851126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:39,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:39,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:40:39,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048978907] [2021-11-20 23:40:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:39,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:40:39,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:40:39,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:40:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:39,356 INFO L87 Difference]: Start difference. First operand 39142 states and 53595 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 3 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (72), 4 states have call predecessors, (72), 3 states have call successors, (72) [2021-11-20 23:40:42,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:44,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:49,033 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:40:51,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:41:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:00,724 INFO L93 Difference]: Finished difference Result 80983 states and 110825 transitions. [2021-11-20 23:41:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:41:00,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 4 states have internal predecessors, (170), 3 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (72), 4 states have call predecessors, (72), 3 states have call successors, (72) Word has length 651 [2021-11-20 23:41:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:00,853 INFO L225 Difference]: With dead ends: 80983 [2021-11-20 23:41:00,853 INFO L226 Difference]: Without dead ends: 41908 [2021-11-20 23:41:00,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:41:00,940 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 2218 mSDsluCounter, 13886 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2218 SdHoareTripleChecker+Valid, 16534 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:00,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2218 Valid, 16534 Invalid, 2804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2799 Invalid, 2 Unknown, 0 Unchecked, 18.2s Time] [2021-11-20 23:41:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41908 states.