./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:15:32,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:15:32,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:15:33,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:15:33,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:15:33,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:15:33,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:15:33,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:15:33,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:15:33,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:15:33,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:15:33,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:15:33,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:15:33,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:15:33,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:15:33,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:15:33,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:15:33,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:15:33,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:15:33,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:15:33,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:15:33,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:15:33,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:15:33,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:15:33,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:15:33,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:15:33,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:15:33,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:15:33,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:15:33,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:15:33,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:15:33,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:15:33,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:15:33,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:15:33,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:15:33,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:15:33,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:15:33,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:15:33,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:15:33,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:15:33,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:15:33,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:15:33,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:15:33,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:15:33,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:15:33,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:15:33,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:15:33,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:15:33,102 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:15:33,102 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:15:33,102 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:15:33,102 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:15:33,103 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:15:33,103 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:15:33,104 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:15:33,104 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:15:33,104 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:15:33,104 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:15:33,104 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:15:33,105 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:15:33,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:15:33,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:15:33,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:15:33,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:15:33,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:15:33,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:15:33,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:15:33,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:15:33,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:15:33,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:15:33,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:15:33,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:33,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:15:33,108 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:15:33,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:15:33,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:15:33,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:15:33,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:15:33,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:15:33,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:15:33,109 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2022-11-19 07:15:33,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:15:33,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:15:33,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:15:33,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:15:33,441 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:15:33,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-19 07:15:33,516 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/data/f00a50c72/2a66d143914e4d8ea88fe06194c714c0/FLAGeee7eb805 [2022-11-19 07:15:34,568 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:15:34,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-19 07:15:34,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/data/f00a50c72/2a66d143914e4d8ea88fe06194c714c0/FLAGeee7eb805 [2022-11-19 07:15:34,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/data/f00a50c72/2a66d143914e4d8ea88fe06194c714c0 [2022-11-19 07:15:34,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:15:34,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:15:34,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:34,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:15:34,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:15:34,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:34" (1/1) ... [2022-11-19 07:15:34,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a87e807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:34, skipping insertion in model container [2022-11-19 07:15:34,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:15:34" (1/1) ... [2022-11-19 07:15:34,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:15:35,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:15:38,794 WARN L234 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_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-19 07:15:38,798 WARN L234 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_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-19 07:15:38,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:38,884 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:15:39,377 WARN L234 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_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-19 07:15:39,378 WARN L234 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_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-19 07:15:39,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:15:39,649 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:15:39,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39 WrapperNode [2022-11-19 07:15:39,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:15:39,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:39,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:15:39,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:15:39,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:39,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:39,973 INFO L138 Inliner]: procedures = 562, calls = 2384, calls flagged for inlining = 265, calls inlined = 187, statements flattened = 4527 [2022-11-19 07:15:39,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:15:39,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:15:39,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:15:39,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:15:39,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:39,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:15:40,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:15:40,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:15:40,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:15:40,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (1/1) ... [2022-11-19 07:15:40,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:15:40,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:15:40,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:15:40,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4df5bc00-b8c1-4b4a-89e2-8e93110d4e44/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:15:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-11-19 07:15:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-11-19 07:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:15:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:15:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-19 07:15:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-19 07:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-19 07:15:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-19 07:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:15:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-19 07:15:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-19 07:15:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-11-19 07:15:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-11-19 07:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-19 07:15:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-19 07:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2022-11-19 07:15:40,299 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2022-11-19 07:15:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 07:15:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 07:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-11-19 07:15:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-11-19 07:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2022-11-19 07:15:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2022-11-19 07:15:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-11-19 07:15:40,300 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-11-19 07:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-11-19 07:15:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-11-19 07:15:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-11-19 07:15:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-11-19 07:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:15:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:15:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-11-19 07:15:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-11-19 07:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-11-19 07:15:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-11-19 07:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:15:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:15:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 07:15:40,303 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 07:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:15:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:15:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-11-19 07:15:40,304 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-11-19 07:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:15:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 07:15:40,305 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 07:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-11-19 07:15:40,306 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-11-19 07:15:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-11-19 07:15:40,307 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-11-19 07:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:15:40,307 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-11-19 07:15:40,307 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-11-19 07:15:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-19 07:15:40,307 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-19 07:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 07:15:40,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 07:15:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:15:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:15:40,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:15:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:15:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:15:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2022-11-19 07:15:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2022-11-19 07:15:40,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:15:40,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:15:40,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:15:40,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-11-19 07:15:40,312 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-11-19 07:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-19 07:15:40,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-19 07:15:40,312 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-19 07:15:40,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-19 07:15:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:15:40,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:15:40,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:15:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:15:40,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:15:40,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:15:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:15:40,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-19 07:15:40,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-19 07:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-19 07:15:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-19 07:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-11-19 07:15:40,316 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-11-19 07:15:40,316 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:15:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:15:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:15:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:15:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:15:40,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:15:40,317 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 07:15:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 07:15:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-11-19 07:15:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-11-19 07:15:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:15:40,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:15:40,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-19 07:15:40,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-19 07:15:40,320 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:15:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:15:40,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:15:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:15:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-11-19 07:15:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-11-19 07:15:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-19 07:15:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-19 07:15:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-11-19 07:15:40,325 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-11-19 07:15:40,331 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:15:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:15:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:15:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:15:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-11-19 07:15:40,332 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-11-19 07:15:40,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:15:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:15:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:15:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:15:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-19 07:15:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-19 07:15:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-11-19 07:15:40,333 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-11-19 07:15:40,333 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-19 07:15:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-19 07:15:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:15:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-11-19 07:15:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-11-19 07:15:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-11-19 07:15:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-11-19 07:15:40,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-19 07:15:40,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-19 07:15:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:15:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-19 07:15:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-19 07:15:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2022-11-19 07:15:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2022-11-19 07:15:40,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2022-11-19 07:15:40,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2022-11-19 07:15:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:15:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-19 07:15:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-19 07:15:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-11-19 07:15:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-11-19 07:15:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-11-19 07:15:40,336 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-11-19 07:15:40,336 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:15:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:15:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:15:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:15:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-19 07:15:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-19 07:15:40,337 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-11-19 07:15:40,337 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-11-19 07:15:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 07:15:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 07:15:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2022-11-19 07:15:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2022-11-19 07:15:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-11-19 07:15:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-11-19 07:15:40,338 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-11-19 07:15:40,338 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-11-19 07:15:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-19 07:15:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-19 07:15:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 07:15:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 07:15:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:15:40,339 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:15:40,339 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-19 07:15:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-19 07:15:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-11-19 07:15:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-11-19 07:15:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:15:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:15:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 07:15:40,340 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 07:15:40,340 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-19 07:15:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-19 07:15:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:15:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:15:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:15:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:15:40,341 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:15:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2022-11-19 07:15:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2022-11-19 07:15:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-19 07:15:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-19 07:15:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 07:15:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 07:15:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-19 07:15:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-19 07:15:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2022-11-19 07:15:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2022-11-19 07:15:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2022-11-19 07:15:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2022-11-19 07:15:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-19 07:15:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-19 07:15:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-19 07:15:40,343 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-19 07:15:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:15:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:15:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2022-11-19 07:15:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2022-11-19 07:15:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2022-11-19 07:15:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2022-11-19 07:15:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:15:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:15:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:15:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 07:15:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 07:15:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-19 07:15:40,345 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-19 07:15:40,345 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-11-19 07:15:40,346 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-11-19 07:15:40,346 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-11-19 07:15:40,346 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-11-19 07:15:41,238 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:15:41,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:15:41,601 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:15:47,613 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:15:47,804 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:15:48,773 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:15:48,774 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:15:48,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:48 BoogieIcfgContainer [2022-11-19 07:15:48,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:15:48,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:15:48,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:15:48,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:15:48,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:15:34" (1/3) ... [2022-11-19 07:15:48,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472b7f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:48, skipping insertion in model container [2022-11-19 07:15:48,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:15:39" (2/3) ... [2022-11-19 07:15:48,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@472b7f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:15:48, skipping insertion in model container [2022-11-19 07:15:48,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:15:48" (3/3) ... [2022-11-19 07:15:48,788 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-19 07:15:48,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:15:48,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:15:48,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:15:48,891 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@402704d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:15:48,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:15:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) [2022-11-19 07:15:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-11-19 07:15:48,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:48,948 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:48,949 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:48,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:48,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1056795945, now seen corresponding path program 1 times [2022-11-19 07:15:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:48,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511365298] [2022-11-19 07:15:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2022-11-19 07:15:50,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:50,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511365298] [2022-11-19 07:15:50,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511365298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:50,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:50,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:50,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132438550] [2022-11-19 07:15:50,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:50,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:50,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:50,375 INFO L87 Difference]: Start difference. First operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-19 07:15:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:53,197 INFO L93 Difference]: Finished difference Result 3597 states and 5093 transitions. [2022-11-19 07:15:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 395 [2022-11-19 07:15:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:53,233 INFO L225 Difference]: With dead ends: 3597 [2022-11-19 07:15:53,233 INFO L226 Difference]: Without dead ends: 2335 [2022-11-19 07:15:53,246 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:15:53,249 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 1611 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:53,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 3376 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:15:53,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-11-19 07:15:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2331. [2022-11-19 07:15:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 1362 states have (on average 1.2723935389133627) internal successors, (1733), 1400 states have internal predecessors, (1733), 762 states have call successors, (762), 206 states have call predecessors, (762), 206 states have return successors, (762), 758 states have call predecessors, (762), 762 states have call successors, (762) [2022-11-19 07:15:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3257 transitions. [2022-11-19 07:15:53,541 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3257 transitions. Word has length 395 [2022-11-19 07:15:53,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:53,549 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3257 transitions. [2022-11-19 07:15:53,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-19 07:15:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3257 transitions. [2022-11-19 07:15:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-11-19 07:15:53,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:53,565 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:15:53,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:53,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:53,566 INFO L85 PathProgramCache]: Analyzing trace with hash -30622522, now seen corresponding path program 1 times [2022-11-19 07:15:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:53,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735123300] [2022-11-19 07:15:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:53,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-19 07:15:54,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:54,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735123300] [2022-11-19 07:15:54,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735123300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:54,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:54,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:54,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451677668] [2022-11-19 07:15:54,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:54,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:54,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:54,123 INFO L87 Difference]: Start difference. First operand 2331 states and 3257 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 07:15:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:15:57,214 INFO L93 Difference]: Finished difference Result 6813 states and 9500 transitions. [2022-11-19 07:15:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:15:57,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 399 [2022-11-19 07:15:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:15:57,244 INFO L225 Difference]: With dead ends: 6813 [2022-11-19 07:15:57,245 INFO L226 Difference]: Without dead ends: 4541 [2022-11-19 07:15:57,255 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:15:57,256 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 1549 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:15:57,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3236 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:15:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2022-11-19 07:15:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4537. [2022-11-19 07:15:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 2658 states have (on average 1.27313769751693) internal successors, (3384), 2736 states have internal predecessors, (3384), 1467 states have call successors, (1467), 411 states have call predecessors, (1467), 411 states have return successors, (1467), 1457 states have call predecessors, (1467), 1467 states have call successors, (1467) [2022-11-19 07:15:57,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6318 transitions. [2022-11-19 07:15:57,514 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6318 transitions. Word has length 399 [2022-11-19 07:15:57,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:15:57,519 INFO L495 AbstractCegarLoop]: Abstraction has 4537 states and 6318 transitions. [2022-11-19 07:15:57,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 07:15:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6318 transitions. [2022-11-19 07:15:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-19 07:15:57,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:15:57,537 INFO L195 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:15:57,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:15:57,538 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:15:57,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:15:57,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1837628709, now seen corresponding path program 1 times [2022-11-19 07:15:57,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:15:57,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507188090] [2022-11-19 07:15:57,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:15:57,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:15:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:15:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-19 07:15:58,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:15:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507188090] [2022-11-19 07:15:58,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507188090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:15:58,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:15:58,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:15:58,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662150413] [2022-11-19 07:15:58,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:15:58,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:15:58,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:15:58,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:15:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:15:58,047 INFO L87 Difference]: Start difference. First operand 4537 states and 6318 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 07:16:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:00,805 INFO L93 Difference]: Finished difference Result 13367 states and 18587 transitions. [2022-11-19 07:16:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 400 [2022-11-19 07:16:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:00,863 INFO L225 Difference]: With dead ends: 13367 [2022-11-19 07:16:00,863 INFO L226 Difference]: Without dead ends: 8889 [2022-11-19 07:16:00,884 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:00,889 INFO L413 NwaCegarLoop]: 1964 mSDtfsCounter, 1548 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:00,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3383 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:16:00,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2022-11-19 07:16:01,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8885. [2022-11-19 07:16:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8885 states, 5216 states have (on average 1.272239263803681) internal successors, (6636), 5374 states have internal predecessors, (6636), 2849 states have call successors, (2849), 819 states have call predecessors, (2849), 819 states have return successors, (2849), 2827 states have call predecessors, (2849), 2849 states have call successors, (2849) [2022-11-19 07:16:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 12334 transitions. [2022-11-19 07:16:01,639 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 12334 transitions. Word has length 400 [2022-11-19 07:16:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:01,640 INFO L495 AbstractCegarLoop]: Abstraction has 8885 states and 12334 transitions. [2022-11-19 07:16:01,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 07:16:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 12334 transitions. [2022-11-19 07:16:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-19 07:16:01,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:01,673 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 4, 4, 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] [2022-11-19 07:16:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:16:01,673 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1490473516, now seen corresponding path program 1 times [2022-11-19 07:16:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373137449] [2022-11-19 07:16:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:01,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3389 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3386 trivial. 0 not checked. [2022-11-19 07:16:02,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:02,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373137449] [2022-11-19 07:16:02,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373137449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:02,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:02,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:02,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993855129] [2022-11-19 07:16:02,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:02,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:02,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:02,264 INFO L87 Difference]: Start difference. First operand 8885 states and 12334 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-19 07:16:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:05,624 INFO L93 Difference]: Finished difference Result 18792 states and 26022 transitions. [2022-11-19 07:16:05,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:05,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 410 [2022-11-19 07:16:05,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:05,682 INFO L225 Difference]: With dead ends: 18792 [2022-11-19 07:16:05,682 INFO L226 Difference]: Without dead ends: 9966 [2022-11-19 07:16:05,711 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:05,712 INFO L413 NwaCegarLoop]: 1836 mSDtfsCounter, 1411 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:05,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1411 Valid, 3237 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:16:05,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2022-11-19 07:16:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9964. [2022-11-19 07:16:06,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9964 states, 5851 states have (on average 1.2693556656981713) internal successors, (7427), 6027 states have internal predecessors, (7427), 3172 states have call successors, (3172), 940 states have call predecessors, (3172), 940 states have return successors, (3172), 3149 states have call predecessors, (3172), 3172 states have call successors, (3172) [2022-11-19 07:16:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9964 states to 9964 states and 13771 transitions. [2022-11-19 07:16:06,339 INFO L78 Accepts]: Start accepts. Automaton has 9964 states and 13771 transitions. Word has length 410 [2022-11-19 07:16:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:06,340 INFO L495 AbstractCegarLoop]: Abstraction has 9964 states and 13771 transitions. [2022-11-19 07:16:06,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-19 07:16:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 9964 states and 13771 transitions. [2022-11-19 07:16:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-19 07:16:06,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:06,386 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:06,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:16:06,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash 627785726, now seen corresponding path program 1 times [2022-11-19 07:16:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:06,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473320754] [2022-11-19 07:16:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-19 07:16:06,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:06,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473320754] [2022-11-19 07:16:06,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473320754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:06,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:06,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:06,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163602331] [2022-11-19 07:16:06,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:06,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:06,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:06,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:06,834 INFO L87 Difference]: Start difference. First operand 9964 states and 13771 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 07:16:10,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:10,129 INFO L93 Difference]: Finished difference Result 23242 states and 32128 transitions. [2022-11-19 07:16:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:10,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 447 [2022-11-19 07:16:10,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:10,202 INFO L225 Difference]: With dead ends: 23242 [2022-11-19 07:16:10,202 INFO L226 Difference]: Without dead ends: 14344 [2022-11-19 07:16:10,240 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:10,241 INFO L413 NwaCegarLoop]: 2578 mSDtfsCounter, 1549 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:10,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3995 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:16:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14344 states. [2022-11-19 07:16:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14344 to 14340. [2022-11-19 07:16:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 8421 states have (on average 1.269564184776155) internal successors, (10691), 8677 states have internal predecessors, (10691), 4558 states have call successors, (4558), 1360 states have call predecessors, (4558), 1360 states have return successors, (4558), 4523 states have call predecessors, (4558), 4558 states have call successors, (4558) [2022-11-19 07:16:11,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 19807 transitions. [2022-11-19 07:16:11,063 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 19807 transitions. Word has length 447 [2022-11-19 07:16:11,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:11,064 INFO L495 AbstractCegarLoop]: Abstraction has 14340 states and 19807 transitions. [2022-11-19 07:16:11,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 07:16:11,065 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 19807 transitions. [2022-11-19 07:16:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-19 07:16:11,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:11,096 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:16:11,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:11,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1732331438, now seen corresponding path program 1 times [2022-11-19 07:16:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:11,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565643150] [2022-11-19 07:16:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2022-11-19 07:16:11,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:11,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565643150] [2022-11-19 07:16:11,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565643150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:11,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:11,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324156136] [2022-11-19 07:16:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:11,448 INFO L87 Difference]: Start difference. First operand 14340 states and 19807 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-19 07:16:14,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:14,730 INFO L93 Difference]: Finished difference Result 34105 states and 47108 transitions. [2022-11-19 07:16:14,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:14,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 443 [2022-11-19 07:16:14,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:14,853 INFO L225 Difference]: With dead ends: 34105 [2022-11-19 07:16:14,854 INFO L226 Difference]: Without dead ends: 20831 [2022-11-19 07:16:14,908 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:14,910 INFO L413 NwaCegarLoop]: 2594 mSDtfsCounter, 1545 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 4011 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:14,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 4011 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-19 07:16:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20831 states. [2022-11-19 07:16:15,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20831 to 20827. [2022-11-19 07:16:16,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20827 states, 12228 states have (on average 1.269299967288191) internal successors, (15521), 12604 states have internal predecessors, (15521), 6611 states have call successors, (6611), 1987 states have call predecessors, (6611), 1987 states have return successors, (6611), 6558 states have call predecessors, (6611), 6611 states have call successors, (6611) [2022-11-19 07:16:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20827 states to 20827 states and 28743 transitions. [2022-11-19 07:16:16,119 INFO L78 Accepts]: Start accepts. Automaton has 20827 states and 28743 transitions. Word has length 443 [2022-11-19 07:16:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:16,120 INFO L495 AbstractCegarLoop]: Abstraction has 20827 states and 28743 transitions. [2022-11-19 07:16:16,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-19 07:16:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 20827 states and 28743 transitions. [2022-11-19 07:16:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-19 07:16:16,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:16,278 INFO L195 NwaCegarLoop]: trace histogram [33, 29, 29, 29, 29, 29, 29, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:16:16,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:16,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 773447917, now seen corresponding path program 1 times [2022-11-19 07:16:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:16,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695729666] [2022-11-19 07:16:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:16,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-19 07:16:16,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:16,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695729666] [2022-11-19 07:16:16,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695729666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:16,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:16,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:16,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278292013] [2022-11-19 07:16:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:16,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:16,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:16,641 INFO L87 Difference]: Start difference. First operand 20827 states and 28743 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 07:16:19,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:21,083 INFO L93 Difference]: Finished difference Result 50297 states and 69418 transitions. [2022-11-19 07:16:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:21,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 448 [2022-11-19 07:16:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:21,240 INFO L225 Difference]: With dead ends: 50297 [2022-11-19 07:16:21,240 INFO L226 Difference]: Without dead ends: 30536 [2022-11-19 07:16:21,566 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:21,567 INFO L413 NwaCegarLoop]: 2578 mSDtfsCounter, 1548 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3995 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:21,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3995 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-19 07:16:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30536 states. [2022-11-19 07:16:23,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30536 to 30532. [2022-11-19 07:16:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 17927 states have (on average 1.2690913147765939) internal successors, (22751), 18483 states have internal predecessors, (22751), 9677 states have call successors, (9677), 2927 states have call predecessors, (9677), 2927 states have return successors, (9677), 9597 states have call predecessors, (9677), 9677 states have call successors, (9677) [2022-11-19 07:16:23,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 42105 transitions. [2022-11-19 07:16:23,172 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 42105 transitions. Word has length 448 [2022-11-19 07:16:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:23,173 INFO L495 AbstractCegarLoop]: Abstraction has 30532 states and 42105 transitions. [2022-11-19 07:16:23,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 07:16:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 42105 transitions. [2022-11-19 07:16:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-11-19 07:16:23,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:23,212 INFO L195 NwaCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:23,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:16:23,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1456703658, now seen corresponding path program 1 times [2022-11-19 07:16:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:23,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974479099] [2022-11-19 07:16:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:23,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3731 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3731 trivial. 0 not checked. [2022-11-19 07:16:23,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:23,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974479099] [2022-11-19 07:16:23,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974479099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:23,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:23,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:16:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098924092] [2022-11-19 07:16:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:23,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:16:23,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:23,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:16:23,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:16:23,687 INFO L87 Difference]: Start difference. First operand 30532 states and 42105 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-19 07:16:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:27,825 INFO L93 Difference]: Finished difference Result 73735 states and 101471 transitions. [2022-11-19 07:16:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:16:27,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 452 [2022-11-19 07:16:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:28,010 INFO L225 Difference]: With dead ends: 73735 [2022-11-19 07:16:28,010 INFO L226 Difference]: Without dead ends: 43262 [2022-11-19 07:16:28,105 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:28,106 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 818 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:28,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 3054 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:16:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43262 states. [2022-11-19 07:16:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43262 to 43233. [2022-11-19 07:16:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43233 states, 25533 states have (on average 1.2618963694043004) internal successors, (32220), 26253 states have internal predecessors, (32220), 13463 states have call successors, (13463), 4236 states have call predecessors, (13463), 4236 states have return successors, (13463), 13305 states have call predecessors, (13463), 13463 states have call successors, (13463) [2022-11-19 07:16:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43233 states to 43233 states and 59146 transitions. [2022-11-19 07:16:30,695 INFO L78 Accepts]: Start accepts. Automaton has 43233 states and 59146 transitions. Word has length 452 [2022-11-19 07:16:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:30,696 INFO L495 AbstractCegarLoop]: Abstraction has 43233 states and 59146 transitions. [2022-11-19 07:16:30,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (63), 2 states have call predecessors, (63), 1 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-19 07:16:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 43233 states and 59146 transitions. [2022-11-19 07:16:30,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-19 07:16:30,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:30,991 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:30,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:16:30,991 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash -666952989, now seen corresponding path program 1 times [2022-11-19 07:16:31,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:31,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054206314] [2022-11-19 07:16:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2022-11-19 07:16:31,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:31,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054206314] [2022-11-19 07:16:31,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054206314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:31,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:31,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:16:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199281035] [2022-11-19 07:16:31,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:31,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:16:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:31,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:16:31,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:16:31,832 INFO L87 Difference]: Start difference. First operand 43233 states and 59146 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 07:16:35,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:37,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:16:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:41,898 INFO L93 Difference]: Finished difference Result 100179 states and 137000 transitions. [2022-11-19 07:16:41,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:16:41,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 466 [2022-11-19 07:16:41,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:42,152 INFO L225 Difference]: With dead ends: 100179 [2022-11-19 07:16:42,152 INFO L226 Difference]: Without dead ends: 57315 [2022-11-19 07:16:42,285 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:42,290 INFO L413 NwaCegarLoop]: 2735 mSDtfsCounter, 1574 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 4730 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:42,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 4730 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-19 07:16:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57315 states. [2022-11-19 07:16:44,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57315 to 57309. [2022-11-19 07:16:44,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57309 states, 33849 states have (on average 1.260893970279772) internal successors, (42680), 34808 states have internal predecessors, (42680), 17793 states have call successors, (17793), 5666 states have call predecessors, (17793), 5666 states have return successors, (17793), 17581 states have call predecessors, (17793), 17793 states have call successors, (17793) [2022-11-19 07:16:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57309 states to 57309 states and 78266 transitions. [2022-11-19 07:16:45,481 INFO L78 Accepts]: Start accepts. Automaton has 57309 states and 78266 transitions. Word has length 466 [2022-11-19 07:16:45,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:45,483 INFO L495 AbstractCegarLoop]: Abstraction has 57309 states and 78266 transitions. [2022-11-19 07:16:45,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2022-11-19 07:16:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 57309 states and 78266 transitions. [2022-11-19 07:16:45,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-19 07:16:45,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:45,544 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:45,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:16:45,545 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:45,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:45,545 INFO L85 PathProgramCache]: Analyzing trace with hash -754013229, now seen corresponding path program 1 times [2022-11-19 07:16:45,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:45,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375497647] [2022-11-19 07:16:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:45,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:16:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:16:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-19 07:16:46,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:16:46,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375497647] [2022-11-19 07:16:46,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375497647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:16:46,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:16:46,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:16:46,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618100171] [2022-11-19 07:16:46,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:16:46,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:16:46,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:16:46,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:16:46,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:16:46,393 INFO L87 Difference]: Start difference. First operand 57309 states and 78266 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 07:16:55,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:16:55,235 INFO L93 Difference]: Finished difference Result 133017 states and 181608 transitions. [2022-11-19 07:16:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:16:55,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 471 [2022-11-19 07:16:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:16:55,546 INFO L225 Difference]: With dead ends: 133017 [2022-11-19 07:16:55,547 INFO L226 Difference]: Without dead ends: 76077 [2022-11-19 07:16:55,672 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:16:55,673 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 1578 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4743 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:16:55,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4743 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-19 07:16:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76077 states. [2022-11-19 07:16:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76077 to 76071. [2022-11-19 07:16:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76071 states, 44945 states have (on average 1.2600734230726442) internal successors, (56634), 46222 states have internal predecessors, (56634), 23545 states have call successors, (23545), 7580 states have call predecessors, (23545), 7580 states have return successors, (23545), 23261 states have call predecessors, (23545), 23545 states have call successors, (23545) [2022-11-19 07:16:59,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76071 states to 76071 states and 103724 transitions. [2022-11-19 07:16:59,798 INFO L78 Accepts]: Start accepts. Automaton has 76071 states and 103724 transitions. Word has length 471 [2022-11-19 07:16:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:16:59,806 INFO L495 AbstractCegarLoop]: Abstraction has 76071 states and 103724 transitions. [2022-11-19 07:16:59,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 07:16:59,806 INFO L276 IsEmpty]: Start isEmpty. Operand 76071 states and 103724 transitions. [2022-11-19 07:16:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-19 07:16:59,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:16:59,874 INFO L195 NwaCegarLoop]: trace histogram [35, 29, 29, 29, 29, 29, 29, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:16:59,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:16:59,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:16:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:16:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 172394762, now seen corresponding path program 1 times [2022-11-19 07:16:59,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:16:59,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973087032] [2022-11-19 07:16:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:16:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3729 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-19 07:17:00,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:00,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973087032] [2022-11-19 07:17:00,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973087032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:17:00,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:17:00,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:17:00,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651461320] [2022-11-19 07:17:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:17:00,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:17:00,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:17:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:17:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:17:00,533 INFO L87 Difference]: Start difference. First operand 76071 states and 103724 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2022-11-19 07:17:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:11,198 INFO L93 Difference]: Finished difference Result 176671 states and 240835 transitions. [2022-11-19 07:17:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:17:11,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 473 [2022-11-19 07:17:11,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:11,562 INFO L225 Difference]: With dead ends: 176671 [2022-11-19 07:17:11,563 INFO L226 Difference]: Without dead ends: 100969 [2022-11-19 07:17:11,722 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:17:11,723 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 1577 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4743 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:11,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 4743 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-19 07:17:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100969 states.