./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 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/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_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW --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-4e7fbc6 [2022-11-23 14:10:37,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:10:37,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:10:37,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:10:37,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:10:37,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:10:37,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:10:37,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:10:37,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:10:37,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:10:37,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:10:37,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:10:37,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:10:37,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:10:37,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:10:37,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:10:37,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:10:37,960 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:10:37,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:10:37,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:10:37,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:10:37,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:10:37,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:10:37,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:10:37,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:10:37,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:10:37,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:10:37,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:10:37,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:10:37,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:10:37,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:10:37,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:10:37,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:10:37,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:10:37,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:10:37,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:10:37,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:10:37,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:10:37,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:10:37,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:10:37,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:10:37,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:10:38,006 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:10:38,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:10:38,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:10:38,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:10:38,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:10:38,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:10:38,008 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:10:38,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:10:38,009 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:10:38,009 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:10:38,009 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:10:38,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:10:38,010 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:10:38,010 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:10:38,010 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:10:38,010 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:10:38,010 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:10:38,011 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:10:38,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:10:38,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:10:38,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:10:38,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:10:38,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:10:38,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:10:38,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:10:38,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:10:38,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:10:38,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:10:38,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:10:38,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:10:38,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:10:38,014 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:10:38,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:10:38,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:10:38,015 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:10:38,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:10:38,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:10:38,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:10:38,016 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_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2022-11-23 14:10:38,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:10:38,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:10:38,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:10:38,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:10:38,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:10:38,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-23 14:10:41,309 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:10:42,031 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:10:42,032 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-23 14:10:42,071 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/data/b29154f91/a7dc5387c4374560b8cc6a9bfec9d809/FLAG2552c19cd [2022-11-23 14:10:42,085 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/data/b29154f91/a7dc5387c4374560b8cc6a9bfec9d809 [2022-11-23 14:10:42,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:10:42,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:10:42,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:10:42,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:10:42,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:10:42,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:42" (1/1) ... [2022-11-23 14:10:42,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebc2c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:42, skipping insertion in model container [2022-11-23 14:10:42,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:42" (1/1) ... [2022-11-23 14:10:42,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:10:42,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:10:46,139 WARN L237 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_051f7ed6-cfde-492b-a5a4-e73c0b928695/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-23 14:10:46,143 WARN L237 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_051f7ed6-cfde-492b-a5a4-e73c0b928695/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-23 14:10:46,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:10:46,224 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:10:46,677 WARN L237 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_051f7ed6-cfde-492b-a5a4-e73c0b928695/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-23 14:10:46,678 WARN L237 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_051f7ed6-cfde-492b-a5a4-e73c0b928695/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-23 14:10:46,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:10:46,942 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:10:46,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46 WrapperNode [2022-11-23 14:10:46,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:10:46,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:10:46,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:10:46,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:10:46,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,280 INFO L138 Inliner]: procedures = 562, calls = 2372, calls flagged for inlining = 265, calls inlined = 187, statements flattened = 4531 [2022-11-23 14:10:47,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:10:47,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:10:47,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:10:47,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:10:47,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,486 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:10:47,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:10:47,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:10:47,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:10:47,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (1/1) ... [2022-11-23 14:10:47,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:10:47,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:10:47,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:10:47,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_051f7ed6-cfde-492b-a5a4-e73c0b928695/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:10:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-11-23 14:10:47,634 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-11-23 14:10:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:10:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:10:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-23 14:10:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-23 14:10:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-23 14:10:47,635 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-23 14:10:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:10:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:10:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-23 14:10:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-23 14:10:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-11-23 14:10:47,636 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-11-23 14:10:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 14:10:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 14:10:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2022-11-23 14:10:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2022-11-23 14:10:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:10:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:10:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-11-23 14:10:47,637 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-11-23 14:10:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2022-11-23 14:10:47,638 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2022-11-23 14:10:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-11-23 14:10:47,639 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-11-23 14:10:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-11-23 14:10:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-11-23 14:10:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-11-23 14:10:47,640 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-11-23 14:10:47,640 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:10:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:10:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-11-23 14:10:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-11-23 14:10:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-11-23 14:10:47,641 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-11-23 14:10:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:10:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:10:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-23 14:10:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-23 14:10:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:10:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:10:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-11-23 14:10:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-11-23 14:10:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:10:47,643 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 14:10:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 14:10:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-11-23 14:10:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-11-23 14:10:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-11-23 14:10:47,645 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-11-23 14:10:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 14:10:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 14:10:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-11-23 14:10:47,646 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-11-23 14:10:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-23 14:10:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-23 14:10:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-23 14:10:47,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-23 14:10:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:10:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:10:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:10:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:10:47,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:10:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:10:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 14:10:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 14:10:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 14:10:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 14:10:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2022-11-23 14:10:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2022-11-23 14:10:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 14:10:47,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 14:10:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:10:47,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:10:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-11-23 14:10:47,652 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-11-23 14:10:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-23 14:10:47,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-23 14:10:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-23 14:10:47,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-23 14:10:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:10:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:10:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:10:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:10:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:10:47,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:10:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:10:47,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-23 14:10:47,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-23 14:10:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-23 14:10:47,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-23 14:10:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-11-23 14:10:47,656 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-11-23 14:10:47,656 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 14:10:47,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 14:10:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:10:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:10:47,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 14:10:47,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 14:10:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:10:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:10:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-11-23 14:10:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-11-23 14:10:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:10:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:10:47,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-23 14:10:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-23 14:10:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:10:47,663 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:10:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:10:47,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:10:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-11-23 14:10:47,665 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-11-23 14:10:47,665 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-23 14:10:47,666 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-23 14:10:47,667 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-11-23 14:10:47,667 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-11-23 14:10:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 14:10:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 14:10:47,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 14:10:47,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 14:10:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-11-23 14:10:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-11-23 14:10:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:10:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:10:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 14:10:47,673 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 14:10:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-23 14:10:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-23 14:10:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-11-23 14:10:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-11-23 14:10:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:10:47,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:10:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:10:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-11-23 14:10:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-11-23 14:10:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-11-23 14:10:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-11-23 14:10:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-23 14:10:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-23 14:10:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:10:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-23 14:10:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-23 14:10:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2022-11-23 14:10:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2022-11-23 14:10:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2022-11-23 14:10:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2022-11-23 14:10:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:10:47,676 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-23 14:10:47,676 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-23 14:10:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-11-23 14:10:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-11-23 14:10:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-11-23 14:10:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-11-23 14:10:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 14:10:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 14:10:47,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:10:47,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:10:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-23 14:10:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-23 14:10:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-11-23 14:10:47,678 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-11-23 14:10:47,678 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-23 14:10:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-23 14:10:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2022-11-23 14:10:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2022-11-23 14:10:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-11-23 14:10:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-11-23 14:10:47,679 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-11-23 14:10:47,679 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-11-23 14:10:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-23 14:10:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-23 14:10:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-23 14:10:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-23 14:10:47,680 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 14:10:47,680 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 14:10:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-23 14:10:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-23 14:10:47,681 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-11-23 14:10:47,681 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-11-23 14:10:47,682 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:10:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:10:47,683 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:10:47,683 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-23 14:10:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-23 14:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:10:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:10:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:10:47,684 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:10:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2022-11-23 14:10:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2022-11-23 14:10:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-23 14:10:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-23 14:10:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:10:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:10:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-23 14:10:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-23 14:10:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2022-11-23 14:10:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2022-11-23 14:10:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2022-11-23 14:10:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2022-11-23 14:10:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:10:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:10:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-23 14:10:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-23 14:10:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:10:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:10:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2022-11-23 14:10:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2022-11-23 14:10:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2022-11-23 14:10:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2022-11-23 14:10:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:10:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:10:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:10:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 14:10:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 14:10:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-23 14:10:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-23 14:10:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-11-23 14:10:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-11-23 14:10:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-11-23 14:10:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-11-23 14:10:48,576 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:10:48,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:10:48,849 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:10:54,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:10:54,709 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:10:55,716 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:10:55,716 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:10:55,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:55 BoogieIcfgContainer [2022-11-23 14:10:55,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:10:55,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:10:55,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:10:55,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:10:55,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:10:42" (1/3) ... [2022-11-23 14:10:55,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c46a2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:55, skipping insertion in model container [2022-11-23 14:10:55,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:46" (2/3) ... [2022-11-23 14:10:55,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c46a2c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:55, skipping insertion in model container [2022-11-23 14:10:55,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:55" (3/3) ... [2022-11-23 14:10:55,732 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-23 14:10:55,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:10:55,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:10:55,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:10:55,865 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;@6d106f11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:10:55,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:10:55,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 1253 states, 716 states have (on average 1.2779329608938548) internal successors, (915), 735 states have internal predecessors, (915), 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) [2022-11-23 14:10:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-11-23 14:10:55,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:55,942 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] [2022-11-23 14:10:55,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2048902024, now seen corresponding path program 1 times [2022-11-23 14:10:55,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:55,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480431561] [2022-11-23 14:10:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:55,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:57,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2022-11-23 14:10:57,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:57,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480431561] [2022-11-23 14:10:57,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480431561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:57,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:57,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:10:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393163248] [2022-11-23 14:10:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:57,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:57,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:57,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:57,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:57,276 INFO L87 Difference]: Start difference. First operand has 1253 states, 716 states have (on average 1.2779329608938548) internal successors, (915), 735 states have internal predecessors, (915), 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) [2022-11-23 14:11:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:00,677 INFO L93 Difference]: Finished difference Result 3603 states and 5105 transitions. [2022-11-23 14:11:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:00,680 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 [2022-11-23 14:11:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:00,807 INFO L225 Difference]: With dead ends: 3603 [2022-11-23 14:11:00,807 INFO L226 Difference]: Without dead ends: 2339 [2022-11-23 14:11:00,821 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 [2022-11-23 14:11:00,826 INFO L413 NwaCegarLoop]: 1897 mSDtfsCounter, 1615 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:00,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 3384 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 14:11:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2022-11-23 14:11:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2335. [2022-11-23 14:11:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2335 states, 1366 states have (on average 1.274524158125915) internal successors, (1741), 1404 states have internal predecessors, (1741), 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) [2022-11-23 14:11:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2335 states to 2335 states and 3265 transitions. [2022-11-23 14:11:01,094 INFO L78 Accepts]: Start accepts. Automaton has 2335 states and 3265 transitions. Word has length 395 [2022-11-23 14:11:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:01,100 INFO L495 AbstractCegarLoop]: Abstraction has 2335 states and 3265 transitions. [2022-11-23 14:11:01,101 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) [2022-11-23 14:11:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2335 states and 3265 transitions. [2022-11-23 14:11:01,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-11-23 14:11:01,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:01,122 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] [2022-11-23 14:11:01,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:11:01,123 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:01,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash 926108702, now seen corresponding path program 1 times [2022-11-23 14:11:01,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:01,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627267308] [2022-11-23 14:11:01,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:01,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-23 14:11:01,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627267308] [2022-11-23 14:11:01,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627267308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:01,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:01,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208710504] [2022-11-23 14:11:01,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:01,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:01,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:01,712 INFO L87 Difference]: Start difference. First operand 2335 states and 3265 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) [2022-11-23 14:11:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:04,907 INFO L93 Difference]: Finished difference Result 6825 states and 9524 transitions. [2022-11-23 14:11:04,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:04,908 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 [2022-11-23 14:11:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:04,934 INFO L225 Difference]: With dead ends: 6825 [2022-11-23 14:11:04,934 INFO L226 Difference]: Without dead ends: 4549 [2022-11-23 14:11:04,941 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 [2022-11-23 14:11:04,943 INFO L413 NwaCegarLoop]: 1821 mSDtfsCounter, 1553 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 3244 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 [2022-11-23 14:11:04,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 3244 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:11:04,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2022-11-23 14:11:05,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 4545. [2022-11-23 14:11:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4545 states, 2666 states have (on average 1.275318829707427) internal successors, (3400), 2744 states have internal predecessors, (3400), 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) [2022-11-23 14:11:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 6334 transitions. [2022-11-23 14:11:05,200 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 6334 transitions. Word has length 399 [2022-11-23 14:11:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:05,201 INFO L495 AbstractCegarLoop]: Abstraction has 4545 states and 6334 transitions. [2022-11-23 14:11:05,202 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) [2022-11-23 14:11:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 6334 transitions. [2022-11-23 14:11:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-23 14:11:05,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:05,221 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] [2022-11-23 14:11:05,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:11:05,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2137029920, now seen corresponding path program 1 times [2022-11-23 14:11:05,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:05,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47933177] [2022-11-23 14:11:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-23 14:11:05,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:05,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47933177] [2022-11-23 14:11:05,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47933177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:05,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:05,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:05,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530719254] [2022-11-23 14:11:05,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:05,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:05,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:05,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:05,719 INFO L87 Difference]: Start difference. First operand 4545 states and 6334 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) [2022-11-23 14:11:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:09,098 INFO L93 Difference]: Finished difference Result 13391 states and 18635 transitions. [2022-11-23 14:11:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:09,099 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 [2022-11-23 14:11:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:09,163 INFO L225 Difference]: With dead ends: 13391 [2022-11-23 14:11:09,163 INFO L226 Difference]: Without dead ends: 8905 [2022-11-23 14:11:09,185 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 [2022-11-23 14:11:09,189 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 1552 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:09,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 3391 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:11:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8905 states. [2022-11-23 14:11:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8905 to 8901. [2022-11-23 14:11:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8901 states, 5232 states have (on average 1.2744648318042813) internal successors, (6668), 5390 states have internal predecessors, (6668), 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) [2022-11-23 14:11:10,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8901 states to 8901 states and 12366 transitions. [2022-11-23 14:11:10,032 INFO L78 Accepts]: Start accepts. Automaton has 8901 states and 12366 transitions. Word has length 400 [2022-11-23 14:11:10,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:10,036 INFO L495 AbstractCegarLoop]: Abstraction has 8901 states and 12366 transitions. [2022-11-23 14:11:10,038 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) [2022-11-23 14:11:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 8901 states and 12366 transitions. [2022-11-23 14:11:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2022-11-23 14:11:10,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:10,066 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:11:10,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -598077060, now seen corresponding path program 1 times [2022-11-23 14:11:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:10,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465860045] [2022-11-23 14:11:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3401 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3398 trivial. 0 not checked. [2022-11-23 14:11:10,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:10,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465860045] [2022-11-23 14:11:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465860045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:10,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:10,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:10,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296961563] [2022-11-23 14:11:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:10,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:10,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:10,588 INFO L87 Difference]: Start difference. First operand 8901 states and 12366 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 14:11:13,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:14,333 INFO L93 Difference]: Finished difference Result 18826 states and 26090 transitions. [2022-11-23 14:11:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:14,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 415 [2022-11-23 14:11:14,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:14,394 INFO L225 Difference]: With dead ends: 18826 [2022-11-23 14:11:14,394 INFO L226 Difference]: Without dead ends: 9984 [2022-11-23 14:11:14,426 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 [2022-11-23 14:11:14,427 INFO L413 NwaCegarLoop]: 1840 mSDtfsCounter, 1415 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:14,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 3245 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 14:11:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9984 states. [2022-11-23 14:11:15,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9984 to 9982. [2022-11-23 14:11:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9982 states, 5869 states have (on average 1.2715965241097291) internal successors, (7463), 6045 states have internal predecessors, (7463), 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) [2022-11-23 14:11:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9982 states to 9982 states and 13807 transitions. [2022-11-23 14:11:15,100 INFO L78 Accepts]: Start accepts. Automaton has 9982 states and 13807 transitions. Word has length 415 [2022-11-23 14:11:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:15,101 INFO L495 AbstractCegarLoop]: Abstraction has 9982 states and 13807 transitions. [2022-11-23 14:11:15,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 14:11:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 9982 states and 13807 transitions. [2022-11-23 14:11:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-23 14:11:15,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:15,134 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] [2022-11-23 14:11:15,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:11:15,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1708739317, now seen corresponding path program 1 times [2022-11-23 14:11:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:15,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468008306] [2022-11-23 14:11:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-23 14:11:15,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:15,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468008306] [2022-11-23 14:11:15,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468008306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:15,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:15,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341505626] [2022-11-23 14:11:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:15,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:15,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:15,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:15,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:15,559 INFO L87 Difference]: Start difference. First operand 9982 states and 13807 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) [2022-11-23 14:11:19,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:19,321 INFO L93 Difference]: Finished difference Result 23284 states and 32212 transitions. [2022-11-23 14:11:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:19,323 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 [2022-11-23 14:11:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:19,399 INFO L225 Difference]: With dead ends: 23284 [2022-11-23 14:11:19,399 INFO L226 Difference]: Without dead ends: 14370 [2022-11-23 14:11:19,432 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 [2022-11-23 14:11:19,433 INFO L413 NwaCegarLoop]: 2586 mSDtfsCounter, 1552 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:19,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 4007 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-23 14:11:19,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14370 states. [2022-11-23 14:11:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14370 to 14366. [2022-11-23 14:11:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 8447 states have (on average 1.2718124778027702) internal successors, (10743), 8703 states have internal predecessors, (10743), 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) [2022-11-23 14:11:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 19859 transitions. [2022-11-23 14:11:20,489 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 19859 transitions. Word has length 448 [2022-11-23 14:11:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:20,491 INFO L495 AbstractCegarLoop]: Abstraction has 14366 states and 19859 transitions. [2022-11-23 14:11:20,492 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) [2022-11-23 14:11:20,492 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 19859 transitions. [2022-11-23 14:11:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-23 14:11:20,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:20,532 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] [2022-11-23 14:11:20,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:11:20,533 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 883224132, now seen corresponding path program 1 times [2022-11-23 14:11:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045037065] [2022-11-23 14:11:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:21,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2022-11-23 14:11:21,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:21,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045037065] [2022-11-23 14:11:21,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045037065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:21,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:21,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282743766] [2022-11-23 14:11:21,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:21,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:21,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:21,074 INFO L87 Difference]: Start difference. First operand 14366 states and 19859 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) [2022-11-23 14:11:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:24,992 INFO L93 Difference]: Finished difference Result 34167 states and 47232 transitions. [2022-11-23 14:11:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:24,992 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 [2022-11-23 14:11:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:25,091 INFO L225 Difference]: With dead ends: 34167 [2022-11-23 14:11:25,091 INFO L226 Difference]: Without dead ends: 20869 [2022-11-23 14:11:25,130 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 [2022-11-23 14:11:25,130 INFO L413 NwaCegarLoop]: 2602 mSDtfsCounter, 1549 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:25,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 4023 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 14:11:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20869 states. [2022-11-23 14:11:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20869 to 20865. [2022-11-23 14:11:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20865 states, 12266 states have (on average 1.2715636719386922) internal successors, (15597), 12642 states have internal predecessors, (15597), 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) [2022-11-23 14:11:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20865 states to 20865 states and 28819 transitions. [2022-11-23 14:11:26,419 INFO L78 Accepts]: Start accepts. Automaton has 20865 states and 28819 transitions. Word has length 443 [2022-11-23 14:11:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:26,420 INFO L495 AbstractCegarLoop]: Abstraction has 20865 states and 28819 transitions. [2022-11-23 14:11:26,420 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) [2022-11-23 14:11:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 20865 states and 28819 transitions. [2022-11-23 14:11:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-23 14:11:26,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:26,457 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] [2022-11-23 14:11:26,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:11:26,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:26,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash -196760215, now seen corresponding path program 1 times [2022-11-23 14:11:26,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:26,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296223304] [2022-11-23 14:11:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-23 14:11:26,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:26,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296223304] [2022-11-23 14:11:26,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296223304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:26,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:26,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549949697] [2022-11-23 14:11:26,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:26,835 INFO L87 Difference]: Start difference. First operand 20865 states and 28819 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) [2022-11-23 14:11:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:30,913 INFO L93 Difference]: Finished difference Result 50389 states and 69602 transitions. [2022-11-23 14:11:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:30,913 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 [2022-11-23 14:11:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:31,056 INFO L225 Difference]: With dead ends: 50389 [2022-11-23 14:11:31,056 INFO L226 Difference]: Without dead ends: 30592 [2022-11-23 14:11:31,121 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 [2022-11-23 14:11:31,122 INFO L413 NwaCegarLoop]: 2609 mSDtfsCounter, 1553 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4030 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:31,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 4030 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-23 14:11:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30592 states. [2022-11-23 14:11:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30592 to 30588. [2022-11-23 14:11:33,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30588 states, 17983 states have (on average 1.2713674025468498) internal successors, (22863), 18539 states have internal predecessors, (22863), 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) [2022-11-23 14:11:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30588 states to 30588 states and 42217 transitions. [2022-11-23 14:11:33,339 INFO L78 Accepts]: Start accepts. Automaton has 30588 states and 42217 transitions. Word has length 447 [2022-11-23 14:11:33,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:33,340 INFO L495 AbstractCegarLoop]: Abstraction has 30588 states and 42217 transitions. [2022-11-23 14:11:33,340 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) [2022-11-23 14:11:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 30588 states and 42217 transitions. [2022-11-23 14:11:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-11-23 14:11:33,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:33,383 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:11:33,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:11:33,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:33,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:33,385 INFO L85 PathProgramCache]: Analyzing trace with hash 688283857, now seen corresponding path program 1 times [2022-11-23 14:11:33,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:33,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854374285] [2022-11-23 14:11:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:33,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3585 trivial. 0 not checked. [2022-11-23 14:11:33,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:33,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854374285] [2022-11-23 14:11:33,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854374285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:33,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:33,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438850465] [2022-11-23 14:11:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:33,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:33,953 INFO L87 Difference]: Start difference. First operand 30588 states and 42217 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-23 14:11:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:38,275 INFO L93 Difference]: Finished difference Result 73845 states and 101691 transitions. [2022-11-23 14:11:38,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:38,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 470 [2022-11-23 14:11:38,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:38,489 INFO L225 Difference]: With dead ends: 73845 [2022-11-23 14:11:38,490 INFO L226 Difference]: Without dead ends: 43316 [2022-11-23 14:11:38,602 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 [2022-11-23 14:11:38,604 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 822 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:38,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 3062 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-23 14:11:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43316 states. [2022-11-23 14:11:41,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43316 to 43287. [2022-11-23 14:11:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43287 states, 25587 states have (on average 1.263454097784031) internal successors, (32328), 26307 states have internal predecessors, (32328), 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) [2022-11-23 14:11:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43287 states to 43287 states and 59254 transitions. [2022-11-23 14:11:41,593 INFO L78 Accepts]: Start accepts. Automaton has 43287 states and 59254 transitions. Word has length 470 [2022-11-23 14:11:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:41,594 INFO L495 AbstractCegarLoop]: Abstraction has 43287 states and 59254 transitions. [2022-11-23 14:11:41,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2022-11-23 14:11:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 43287 states and 59254 transitions. [2022-11-23 14:11:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-23 14:11:41,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:41,681 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] [2022-11-23 14:11:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:11:41,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:41,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:41,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1290309766, now seen corresponding path program 1 times [2022-11-23 14:11:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121520739] [2022-11-23 14:11:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:41,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2022-11-23 14:11:42,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:42,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121520739] [2022-11-23 14:11:42,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121520739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:42,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:42,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:11:42,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323514987] [2022-11-23 14:11:42,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:42,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:11:42,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:11:42,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:11:42,312 INFO L87 Difference]: Start difference. First operand 43287 states and 59254 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) [2022-11-23 14:11:50,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:50,837 INFO L93 Difference]: Finished difference Result 100305 states and 137252 transitions. [2022-11-23 14:11:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:11:50,838 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 [2022-11-23 14:11:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:51,096 INFO L225 Difference]: With dead ends: 100305 [2022-11-23 14:11:51,096 INFO L226 Difference]: Without dead ends: 57387 [2022-11-23 14:11:51,218 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 [2022-11-23 14:11:51,221 INFO L413 NwaCegarLoop]: 2743 mSDtfsCounter, 1578 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 4746 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 [2022-11-23 14:11:51,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 4746 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-23 14:11:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57387 states. [2022-11-23 14:11:54,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57387 to 57381. [2022-11-23 14:11:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57381 states, 33921 states have (on average 1.262462781168008) internal successors, (42824), 34880 states have internal predecessors, (42824), 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) [2022-11-23 14:11:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57381 states to 57381 states and 78410 transitions. [2022-11-23 14:11:54,510 INFO L78 Accepts]: Start accepts. Automaton has 57381 states and 78410 transitions. Word has length 466 [2022-11-23 14:11:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:54,511 INFO L495 AbstractCegarLoop]: Abstraction has 57381 states and 78410 transitions. [2022-11-23 14:11:54,511 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) [2022-11-23 14:11:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 57381 states and 78410 transitions. [2022-11-23 14:11:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-23 14:11:54,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:54,570 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] [2022-11-23 14:11:54,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:11:54,571 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash -823706830, now seen corresponding path program 1 times [2022-11-23 14:11:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:54,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782191430] [2022-11-23 14:11:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:54,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-23 14:11:55,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:55,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782191430] [2022-11-23 14:11:55,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782191430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:55,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:55,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:11:55,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134768961] [2022-11-23 14:11:55,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:55,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:11:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:11:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:11:55,393 INFO L87 Difference]: Start difference. First operand 57381 states and 78410 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) [2022-11-23 14:12:04,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:04,528 INFO L93 Difference]: Finished difference Result 133185 states and 181944 transitions. [2022-11-23 14:12:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:12:04,529 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 [2022-11-23 14:12:04,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:04,999 INFO L225 Difference]: With dead ends: 133185 [2022-11-23 14:12:04,999 INFO L226 Difference]: Without dead ends: 76173 [2022-11-23 14:12:05,449 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 [2022-11-23 14:12:05,450 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 1582 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:05,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 4759 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 14:12:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76173 states. [2022-11-23 14:12:08,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76173 to 76167. [2022-11-23 14:12:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76167 states, 45041 states have (on average 1.26165049621456) internal successors, (56826), 46318 states have internal predecessors, (56826), 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) [2022-11-23 14:12:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76167 states to 76167 states and 103916 transitions. [2022-11-23 14:12:09,115 INFO L78 Accepts]: Start accepts. Automaton has 76167 states and 103916 transitions. Word has length 471 [2022-11-23 14:12:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:09,116 INFO L495 AbstractCegarLoop]: Abstraction has 76167 states and 103916 transitions. [2022-11-23 14:12:09,117 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) [2022-11-23 14:12:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 76167 states and 103916 transitions. [2022-11-23 14:12:09,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-23 14:12:09,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:09,172 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] [2022-11-23 14:12:09,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:12:09,172 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:09,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:09,173 INFO L85 PathProgramCache]: Analyzing trace with hash 862596066, now seen corresponding path program 1 times [2022-11-23 14:12:09,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:09,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387711925] [2022-11-23 14:12:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:09,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3729 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-23 14:12:10,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:10,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387711925] [2022-11-23 14:12:10,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387711925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:10,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:10,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:12:10,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840320461] [2022-11-23 14:12:10,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:10,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:12:10,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:10,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:12:10,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:12:10,046 INFO L87 Difference]: Start difference. First operand 76167 states and 103916 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) [2022-11-23 14:12:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:18,537 INFO L93 Difference]: Finished difference Result 176895 states and 241283 transitions. [2022-11-23 14:12:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:12:18,538 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 [2022-11-23 14:12:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:19,148 INFO L225 Difference]: With dead ends: 176895 [2022-11-23 14:12:19,149 INFO L226 Difference]: Without dead ends: 101097 [2022-11-23 14:12:19,354 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 [2022-11-23 14:12:19,354 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 1581 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:19,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 4759 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 14:12:19,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101097 states.