./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/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_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 02:12:27,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:12:27,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:12:27,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:12:27,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:12:27,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:12:27,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:12:27,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:12:27,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:12:27,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:12:27,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:12:27,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:12:27,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:12:27,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:12:27,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:12:27,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:12:27,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:12:27,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:12:27,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:12:27,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:12:27,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:12:27,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:12:27,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:12:27,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:12:28,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:12:28,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:12:28,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:12:28,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:12:28,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:12:28,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:12:28,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:12:28,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:12:28,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:12:28,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:12:28,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:12:28,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:12:28,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:12:28,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:12:28,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:12:28,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:12:28,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:12:28,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:12:28,058 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:12:28,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:12:28,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:12:28,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:12:28,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:12:28,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:12:28,063 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:12:28,063 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:12:28,063 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:12:28,064 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:12:28,065 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:12:28,065 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:12:28,065 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:12:28,066 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:12:28,066 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:12:28,066 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:12:28,066 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:12:28,067 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:12:28,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:12:28,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:12:28,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:12:28,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:12:28,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:12:28,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:12:28,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:12:28,069 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:12:28,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:12:28,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:12:28,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:12:28,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:12:28,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:12:28,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:12:28,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:12:28,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:12:28,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:12:28,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:12:28,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:12:28,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:12:28,073 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_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2d7f6c194f04de54ba5a893678a720456a663ad567a49e51faf84a68b16d812 [2022-11-03 02:12:28,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:12:28,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:12:28,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:12:28,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:12:28,388 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:12:28,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-03 02:12:28,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/data/734f40b05/4bd00c2f796842a49ae3ec57beb2033f/FLAG9e82fee93 [2022-11-03 02:12:29,415 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:12:29,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-03 02:12:29,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/data/734f40b05/4bd00c2f796842a49ae3ec57beb2033f/FLAG9e82fee93 [2022-11-03 02:12:29,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/data/734f40b05/4bd00c2f796842a49ae3ec57beb2033f [2022-11-03 02:12:29,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:12:29,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:12:29,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:12:29,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:12:29,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:12:29,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:12:29" (1/1) ... [2022-11-03 02:12:29,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@752f9afc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:29, skipping insertion in model container [2022-11-03 02:12:29,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:12:29" (1/1) ... [2022-11-03 02:12:29,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:12:29,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:12:33,815 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-03 02:12:33,820 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-03 02:12:33,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:12:33,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:12:34,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415292,415305] [2022-11-03 02:12:34,328 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i[415437,415450] [2022-11-03 02:12:34,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:12:34,605 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:12:34,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34 WrapperNode [2022-11-03 02:12:34,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:12:34,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:12:34,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:12:34,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:12:34,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:34,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:34,903 INFO L138 Inliner]: procedures = 562, calls = 2384, calls flagged for inlining = 265, calls inlined = 187, statements flattened = 4537 [2022-11-03 02:12:34,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:12:34,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:12:34,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:12:34,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:12:34,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:34,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:34,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:34,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:35,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:35,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:35,135 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:35,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:35,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:12:35,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:12:35,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:12:35,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:12:35,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (1/1) ... [2022-11-03 02:12:35,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:12:35,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:12:35,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:12:35,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_765d5a4c-4699-46f1-a9ad-9664505ee602/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:12:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure get_page [2022-11-03 02:12:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure get_page [2022-11-03 02:12:35,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:12:35,276 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:12:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-03 02:12:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-03 02:12:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 02:12:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 02:12:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:12:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:12:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-03 02:12:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netfront_info [2022-11-03 02:12:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure bind_evtchn_to_irqhandler [2022-11-03 02:12:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_evtchn_to_irqhandler [2022-11-03 02:12:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-03 02:12:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-03 02:12:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_interrupt [2022-11-03 02:12:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_interrupt [2022-11-03 02:12:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:12:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:12:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_grant_ring [2022-11-03 02:12:35,337 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_grant_ring [2022-11-03 02:12:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure free_percpu [2022-11-03 02:12:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure free_percpu [2022-11-03 02:12:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_claim_grant_reference [2022-11-03 02:12:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_claim_grant_reference [2022-11-03 02:12:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access [2022-11-03 02:12:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access [2022-11-03 02:12:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_disconnect_backend [2022-11-03 02:12:35,338 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_disconnect_backend [2022-11-03 02:12:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:12:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:12:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_alloc_grant_references [2022-11-03 02:12:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_alloc_grant_references [2022-11-03 02:12:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_release_grant_reference [2022-11-03 02:12:35,339 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_release_grant_reference [2022-11-03 02:12:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:12:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:12:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:12:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:12:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:12:35,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:12:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rxidx [2022-11-03 02:12:35,341 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rxidx [2022-11-03 02:12:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:12:35,348 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:12:35,349 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:12:35,349 INFO L130 BoogieDeclarations]: Found specification of procedure pfn_to_mfn [2022-11-03 02:12:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure pfn_to_mfn [2022-11-03 02:12:35,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_entry_set_link [2022-11-03 02:12:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_entry_set_link [2022-11-03 02:12:35,350 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:12:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:12:35,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_free_grant_references [2022-11-03 02:12:35,350 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_free_grant_references [2022-11-03 02:12:35,351 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-03 02:12:35,351 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-03 02:12:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 02:12:35,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 02:12:35,357 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:12:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:12:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:12:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:12:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:12:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:12:35,358 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:12:35,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:12:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:12:35,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:12:35,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_124 [2022-11-03 02:12:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_124 [2022-11-03 02:12:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:12:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:12:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:12:35,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:12:35,360 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_ref [2022-11-03 02:12:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_ref [2022-11-03 02:12:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-03 02:12:35,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netfront_info [2022-11-03 02:12:35,361 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 02:12:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 02:12:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:12:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:12:35,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:12:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:12:35,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:12:35,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:12:35,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:12:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:12:35,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2022-11-03 02:12:35,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2022-11-03 02:12:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2022-11-03 02:12:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_grant_foreign_access_ref [2022-11-03 02:12:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_grant_foreign_access_ref [2022-11-03 02:12:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:12:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:12:35,365 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:12:35,365 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:12:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:12:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:12:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:12:35,366 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:12:35,366 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_get_rx_skb [2022-11-03 02:12:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_get_rx_skb [2022-11-03 02:12:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:12:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:12:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-03 02:12:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_netif_exit_20_2 [2022-11-03 02:12:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:12:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:12:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:12:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:12:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_release_tx_bufs [2022-11-03 02:12:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_release_tx_bufs [2022-11-03 02:12:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-03 02:12:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-03 02:12:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_write [2022-11-03 02:12:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_write [2022-11-03 02:12:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:12:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:12:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:12:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:12:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-11-03 02:12:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-11-03 02:12:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:12:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:12:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:12:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:12:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-03 02:12:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-03 02:12:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_alloc_evtchn [2022-11-03 02:12:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_alloc_evtchn [2022-11-03 02:12:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 02:12:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 02:12:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:12:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure netfront_tx_slot_available [2022-11-03 02:12:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure netfront_tx_slot_available [2022-11-03 02:12:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure notify_remote_via_irq [2022-11-03 02:12:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure notify_remote_via_irq [2022-11-03 02:12:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-03 02:12:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netfront_info [2022-11-03 02:12:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:12:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-03 02:12:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-03 02:12:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_min [2022-11-03 02:12:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_min [2022-11-03 02:12:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_107 [2022-11-03 02:12:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_107 [2022-11-03 02:12:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:12:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-03 02:12:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-03 02:12:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure add_id_to_freelist [2022-11-03 02:12:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure add_id_to_freelist [2022-11-03 02:12:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_alloc_rx_buffers [2022-11-03 02:12:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_alloc_rx_buffers [2022-11-03 02:12:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:12:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:12:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:12:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:12:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2022-11-03 02:12:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2022-11-03 02:12:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure gnttab_end_foreign_access_ref [2022-11-03 02:12:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure gnttab_end_foreign_access_ref [2022-11-03 02:12:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:12:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:12:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_104 [2022-11-03 02:12:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_104 [2022-11-03 02:12:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-11-03 02:12:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-11-03 02:12:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure get_zeroed_page [2022-11-03 02:12:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure get_zeroed_page [2022-11-03 02:12:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-11-03 02:12:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-11-03 02:12:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:12:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:12:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:12:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:12:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-03 02:12:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-03 02:12:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_end_access [2022-11-03 02:12:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_end_access [2022-11-03 02:12:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:12:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:12:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:12:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:12:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure skb_add_rx_frag [2022-11-03 02:12:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_add_rx_frag [2022-11-03 02:12:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:12:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:12:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:12:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 02:12:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 02:12:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_rx_interrupt [2022-11-03 02:12:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_rx_interrupt [2022-11-03 02:12:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-03 02:12:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netfront_info [2022-11-03 02:12:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:12:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:12:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2022-11-03 02:12:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2022-11-03 02:12:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_105 [2022-11-03 02:12:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_105 [2022-11-03 02:12:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure store_rxbuf_max [2022-11-03 02:12:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure store_rxbuf_max [2022-11-03 02:12:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 02:12:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 02:12:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-03 02:12:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-03 02:12:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:12:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:12:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_interrupt [2022-11-03 02:12:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_interrupt [2022-11-03 02:12:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_123 [2022-11-03 02:12:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_123 [2022-11-03 02:12:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:12:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:12:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:12:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 02:12:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 02:12:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-03 02:12:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-03 02:12:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_free_evtchn [2022-11-03 02:12:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_free_evtchn [2022-11-03 02:12:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure xennet_tx_buf_gc [2022-11-03 02:12:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure xennet_tx_buf_gc [2022-11-03 02:12:36,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:12:36,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:12:36,410 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:12:44,371 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:12:44,585 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:12:45,558 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:12:45,558 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:12:45,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:45 BoogieIcfgContainer [2022-11-03 02:12:45,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:12:45,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:12:45,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:12:45,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:12:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:12:29" (1/3) ... [2022-11-03 02:12:45,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4a175a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:45, skipping insertion in model container [2022-11-03 02:12:45,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:12:34" (2/3) ... [2022-11-03 02:12:45,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4a175a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:12:45, skipping insertion in model container [2022-11-03 02:12:45,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:12:45" (3/3) ... [2022-11-03 02:12:45,575 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-xen-netfront.cil.i [2022-11-03 02:12:45,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:12:45,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:12:45,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:12:45,707 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;@38ca2c56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:12:45,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:12:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) [2022-11-03 02:12:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-11-03 02:12:45,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:45,817 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] [2022-11-03 02:12:45,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash -703431458, now seen corresponding path program 1 times [2022-11-03 02:12:45,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:45,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655979469] [2022-11-03 02:12:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3317 trivial. 0 not checked. [2022-11-03 02:12:47,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:47,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655979469] [2022-11-03 02:12:47,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655979469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:47,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:47,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020225299] [2022-11-03 02:12:47,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:47,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:47,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:47,142 INFO L87 Difference]: Start difference. First operand has 1251 states, 714 states have (on average 1.2759103641456582) internal successors, (911), 733 states have internal predecessors, (911), 431 states have call successors, (431), 106 states have call predecessors, (431), 105 states have return successors, (426), 425 states have call predecessors, (426), 426 states have call successors, (426) Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-03 02:12:51,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:52,566 INFO L93 Difference]: Finished difference Result 3597 states and 5097 transitions. [2022-11-03 02:12:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:12:52,569 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 [2022-11-03 02:12:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:52,604 INFO L225 Difference]: With dead ends: 3597 [2022-11-03 02:12:52,605 INFO L226 Difference]: Without dead ends: 2335 [2022-11-03 02:12:52,617 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 [2022-11-03 02:12:52,619 INFO L413 NwaCegarLoop]: 1915 mSDtfsCounter, 1610 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:52,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 3396 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 562 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 02:12:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-11-03 02:12:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2331. [2022-11-03 02:12:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2331 states, 1362 states have (on average 1.2723935389133627) internal successors, (1733), 1400 states have internal predecessors, (1733), 762 states have call successors, (762), 206 states have call predecessors, (762), 206 states have return successors, (766), 758 states have call predecessors, (766), 762 states have call successors, (766) [2022-11-03 02:12:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3261 transitions. [2022-11-03 02:12:52,927 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3261 transitions. Word has length 395 [2022-11-03 02:12:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:52,934 INFO L495 AbstractCegarLoop]: Abstraction has 2331 states and 3261 transitions. [2022-11-03 02:12:52,935 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) [2022-11-03 02:12:52,935 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3261 transitions. [2022-11-03 02:12:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2022-11-03 02:12:52,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:52,959 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] [2022-11-03 02:12:52,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:12:52,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:52,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2050985762, now seen corresponding path program 1 times [2022-11-03 02:12:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:52,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439604755] [2022-11-03 02:12:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:53,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-03 02:12:53,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:53,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439604755] [2022-11-03 02:12:53,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439604755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:53,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:53,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:53,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380928097] [2022-11-03 02:12:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:53,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:53,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:53,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:53,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:53,504 INFO L87 Difference]: Start difference. First operand 2331 states and 3261 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-03 02:12:57,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:12:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:58,350 INFO L93 Difference]: Finished difference Result 6813 states and 9515 transitions. [2022-11-03 02:12:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:12:58,351 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 [2022-11-03 02:12:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:58,384 INFO L225 Difference]: With dead ends: 6813 [2022-11-03 02:12:58,384 INFO L226 Difference]: Without dead ends: 4541 [2022-11-03 02:12:58,395 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 [2022-11-03 02:12:58,396 INFO L413 NwaCegarLoop]: 1839 mSDtfsCounter, 1548 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:58,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 3256 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 562 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:12:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2022-11-03 02:12:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4537. [2022-11-03 02:12:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 2658 states have (on average 1.27313769751693) internal successors, (3384), 2736 states have internal predecessors, (3384), 1467 states have call successors, (1467), 411 states have call predecessors, (1467), 411 states have return successors, (1478), 1457 states have call predecessors, (1478), 1467 states have call successors, (1478) [2022-11-03 02:12:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6329 transitions. [2022-11-03 02:12:58,670 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6329 transitions. Word has length 399 [2022-11-03 02:12:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:58,675 INFO L495 AbstractCegarLoop]: Abstraction has 4537 states and 6329 transitions. [2022-11-03 02:12:58,675 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) [2022-11-03 02:12:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6329 transitions. [2022-11-03 02:12:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2022-11-03 02:12:58,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:58,693 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] [2022-11-03 02:12:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:12:58,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:12:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash -412442778, now seen corresponding path program 1 times [2022-11-03 02:12:58,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:58,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009660397] [2022-11-03 02:12:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:58,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:12:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3326 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3326 trivial. 0 not checked. [2022-11-03 02:12:59,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:12:59,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009660397] [2022-11-03 02:12:59,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009660397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:12:59,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:12:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:12:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746734729] [2022-11-03 02:12:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:12:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:12:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:12:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:12:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:12:59,248 INFO L87 Difference]: Start difference. First operand 4537 states and 6329 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) [2022-11-03 02:13:03,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:04,377 INFO L93 Difference]: Finished difference Result 13367 states and 18622 transitions. [2022-11-03 02:13:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:04,377 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 [2022-11-03 02:13:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:04,435 INFO L225 Difference]: With dead ends: 13367 [2022-11-03 02:13:04,435 INFO L226 Difference]: Without dead ends: 8889 [2022-11-03 02:13:04,456 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 [2022-11-03 02:13:04,460 INFO L413 NwaCegarLoop]: 1962 mSDtfsCounter, 1547 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:04,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 3379 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 592 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:13:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2022-11-03 02:13:05,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8885. [2022-11-03 02:13:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8885 states, 5216 states have (on average 1.272239263803681) internal successors, (6636), 5374 states have internal predecessors, (6636), 2849 states have call successors, (2849), 819 states have call predecessors, (2849), 819 states have return successors, (2873), 2827 states have call predecessors, (2873), 2849 states have call successors, (2873) [2022-11-03 02:13:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8885 states to 8885 states and 12358 transitions. [2022-11-03 02:13:05,099 INFO L78 Accepts]: Start accepts. Automaton has 8885 states and 12358 transitions. Word has length 400 [2022-11-03 02:13:05,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:05,100 INFO L495 AbstractCegarLoop]: Abstraction has 8885 states and 12358 transitions. [2022-11-03 02:13:05,101 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) [2022-11-03 02:13:05,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8885 states and 12358 transitions. [2022-11-03 02:13:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-03 02:13:05,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:05,127 INFO L195 NwaCegarLoop]: trace histogram [31, 29, 29, 29, 29, 29, 29, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:13:05,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:13:05,128 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash 527343246, now seen corresponding path program 1 times [2022-11-03 02:13:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:05,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83019893] [2022-11-03 02:13:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:05,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3389 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3386 trivial. 0 not checked. [2022-11-03 02:13:05,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:05,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83019893] [2022-11-03 02:13:05,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83019893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:05,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:05,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:05,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513841322] [2022-11-03 02:13:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:05,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:05,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:05,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:05,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:05,698 INFO L87 Difference]: Start difference. First operand 8885 states and 12358 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-03 02:13:09,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:10,647 INFO L93 Difference]: Finished difference Result 18792 states and 26072 transitions. [2022-11-03 02:13:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:10,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 410 [2022-11-03 02:13:10,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:10,740 INFO L225 Difference]: With dead ends: 18792 [2022-11-03 02:13:10,740 INFO L226 Difference]: Without dead ends: 9966 [2022-11-03 02:13:10,784 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 [2022-11-03 02:13:10,788 INFO L413 NwaCegarLoop]: 1834 mSDtfsCounter, 1410 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:10,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 3233 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 560 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:13:10,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2022-11-03 02:13:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 9964. [2022-11-03 02:13:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9964 states, 5851 states have (on average 1.2693556656981713) internal successors, (7427), 6027 states have internal predecessors, (7427), 3172 states have call successors, (3172), 940 states have call predecessors, (3172), 940 states have return successors, (3198), 3149 states have call predecessors, (3198), 3172 states have call successors, (3198) [2022-11-03 02:13:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9964 states to 9964 states and 13797 transitions. [2022-11-03 02:13:11,417 INFO L78 Accepts]: Start accepts. Automaton has 9964 states and 13797 transitions. Word has length 410 [2022-11-03 02:13:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:11,418 INFO L495 AbstractCegarLoop]: Abstraction has 9964 states and 13797 transitions. [2022-11-03 02:13:11,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-03 02:13:11,419 INFO L276 IsEmpty]: Start isEmpty. Operand 9964 states and 13797 transitions. [2022-11-03 02:13:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-03 02:13:11,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:11,453 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] [2022-11-03 02:13:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:13:11,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:11,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 275502618, now seen corresponding path program 1 times [2022-11-03 02:13:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:11,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189738966] [2022-11-03 02:13:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:11,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-03 02:13:11,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:11,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189738966] [2022-11-03 02:13:11,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189738966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:11,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:11,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:11,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021146635] [2022-11-03 02:13:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:11,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:11,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:11,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:11,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:11,867 INFO L87 Difference]: Start difference. First operand 9964 states and 13797 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) [2022-11-03 02:13:16,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:17,390 INFO L93 Difference]: Finished difference Result 23242 states and 32187 transitions. [2022-11-03 02:13:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:17,391 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 [2022-11-03 02:13:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:17,462 INFO L225 Difference]: With dead ends: 23242 [2022-11-03 02:13:17,462 INFO L226 Difference]: Without dead ends: 14344 [2022-11-03 02:13:17,495 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 [2022-11-03 02:13:17,498 INFO L413 NwaCegarLoop]: 2574 mSDtfsCounter, 1548 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3989 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 764 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:13:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14344 states. [2022-11-03 02:13:18,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14344 to 14340. [2022-11-03 02:13:18,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14340 states, 8421 states have (on average 1.269564184776155) internal successors, (10691), 8677 states have internal predecessors, (10691), 4558 states have call successors, (4558), 1360 states have call predecessors, (4558), 1360 states have return successors, (4593), 4523 states have call predecessors, (4593), 4558 states have call successors, (4593) [2022-11-03 02:13:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14340 states to 14340 states and 19842 transitions. [2022-11-03 02:13:18,367 INFO L78 Accepts]: Start accepts. Automaton has 14340 states and 19842 transitions. Word has length 448 [2022-11-03 02:13:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:18,369 INFO L495 AbstractCegarLoop]: Abstraction has 14340 states and 19842 transitions. [2022-11-03 02:13:18,369 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) [2022-11-03 02:13:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 14340 states and 19842 transitions. [2022-11-03 02:13:18,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-03 02:13:18,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:18,406 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] [2022-11-03 02:13:18,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:13:18,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1531820240, now seen corresponding path program 1 times [2022-11-03 02:13:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:18,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289842487] [2022-11-03 02:13:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:18,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2022-11-03 02:13:18,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:18,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289842487] [2022-11-03 02:13:18,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289842487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:18,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:18,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:18,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357336086] [2022-11-03 02:13:18,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:18,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:18,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:18,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:18,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:18,792 INFO L87 Difference]: Start difference. First operand 14340 states and 19842 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) [2022-11-03 02:13:23,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:24,774 INFO L93 Difference]: Finished difference Result 34105 states and 47193 transitions. [2022-11-03 02:13:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:24,775 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 [2022-11-03 02:13:24,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:24,883 INFO L225 Difference]: With dead ends: 34105 [2022-11-03 02:13:24,884 INFO L226 Difference]: Without dead ends: 20831 [2022-11-03 02:13:24,940 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 [2022-11-03 02:13:24,941 INFO L413 NwaCegarLoop]: 2614 mSDtfsCounter, 1544 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:24,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 4029 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 771 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:13:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20831 states. [2022-11-03 02:13:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20831 to 20827. [2022-11-03 02:13:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20827 states, 12228 states have (on average 1.269299967288191) internal successors, (15521), 12604 states have internal predecessors, (15521), 6611 states have call successors, (6611), 1987 states have call predecessors, (6611), 1987 states have return successors, (6663), 6558 states have call predecessors, (6663), 6611 states have call successors, (6663) [2022-11-03 02:13:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20827 states to 20827 states and 28795 transitions. [2022-11-03 02:13:26,099 INFO L78 Accepts]: Start accepts. Automaton has 20827 states and 28795 transitions. Word has length 443 [2022-11-03 02:13:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:26,100 INFO L495 AbstractCegarLoop]: Abstraction has 20827 states and 28795 transitions. [2022-11-03 02:13:26,100 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) [2022-11-03 02:13:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20827 states and 28795 transitions. [2022-11-03 02:13:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-03 02:13:26,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:26,135 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] [2022-11-03 02:13:26,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:13:26,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:26,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1113411090, now seen corresponding path program 1 times [2022-11-03 02:13:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657740361] [2022-11-03 02:13:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3571 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3564 trivial. 0 not checked. [2022-11-03 02:13:26,748 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657740361] [2022-11-03 02:13:26,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657740361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:26,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:26,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:26,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720537152] [2022-11-03 02:13:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:26,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:26,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:26,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:26,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:26,751 INFO L87 Difference]: Start difference. First operand 20827 states and 28795 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) [2022-11-03 02:13:31,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:32,866 INFO L93 Difference]: Finished difference Result 50297 states and 69546 transitions. [2022-11-03 02:13:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:32,867 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 [2022-11-03 02:13:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:32,992 INFO L225 Difference]: With dead ends: 50297 [2022-11-03 02:13:32,992 INFO L226 Difference]: Without dead ends: 30536 [2022-11-03 02:13:33,048 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 [2022-11-03 02:13:33,050 INFO L413 NwaCegarLoop]: 2598 mSDtfsCounter, 1548 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:33,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 4013 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 769 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:13:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30536 states. [2022-11-03 02:13:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30536 to 30532. [2022-11-03 02:13:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30532 states, 17927 states have (on average 1.2690913147765939) internal successors, (22751), 18483 states have internal predecessors, (22751), 9677 states have call successors, (9677), 2927 states have call predecessors, (9677), 2927 states have return successors, (9755), 9597 states have call predecessors, (9755), 9677 states have call successors, (9755) [2022-11-03 02:13:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30532 states to 30532 states and 42183 transitions. [2022-11-03 02:13:34,884 INFO L78 Accepts]: Start accepts. Automaton has 30532 states and 42183 transitions. Word has length 447 [2022-11-03 02:13:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:34,885 INFO L495 AbstractCegarLoop]: Abstraction has 30532 states and 42183 transitions. [2022-11-03 02:13:34,885 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) [2022-11-03 02:13:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 30532 states and 42183 transitions. [2022-11-03 02:13:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-11-03 02:13:34,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:34,930 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] [2022-11-03 02:13:34,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:13:34,931 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1513484518, now seen corresponding path program 1 times [2022-11-03 02:13:34,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:34,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479846755] [2022-11-03 02:13:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3585 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3585 trivial. 0 not checked. [2022-11-03 02:13:35,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:35,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479846755] [2022-11-03 02:13:35,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479846755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:35,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:35,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:13:35,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724235342] [2022-11-03 02:13:35,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:35,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:13:35,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:35,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:13:35,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:13:35,781 INFO L87 Difference]: Start difference. First operand 30532 states and 42183 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) [2022-11-03 02:13:39,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:41,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:41,238 INFO L93 Difference]: Finished difference Result 73735 states and 101655 transitions. [2022-11-03 02:13:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:13:41,238 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 [2022-11-03 02:13:41,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:41,412 INFO L225 Difference]: With dead ends: 73735 [2022-11-03 02:13:41,412 INFO L226 Difference]: Without dead ends: 43262 [2022-11-03 02:13:41,496 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 [2022-11-03 02:13:41,497 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 821 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:41,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 3074 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 581 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 02:13:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43262 states. [2022-11-03 02:13:43,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43262 to 43233. [2022-11-03 02:13:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43233 states, 25533 states have (on average 1.2618963694043004) internal successors, (32220), 26253 states have internal predecessors, (32220), 13463 states have call successors, (13463), 4236 states have call predecessors, (13463), 4236 states have return successors, (13569), 13305 states have call predecessors, (13569), 13463 states have call successors, (13569) [2022-11-03 02:13:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43233 states to 43233 states and 59252 transitions. [2022-11-03 02:13:43,889 INFO L78 Accepts]: Start accepts. Automaton has 43233 states and 59252 transitions. Word has length 470 [2022-11-03 02:13:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:43,890 INFO L495 AbstractCegarLoop]: Abstraction has 43233 states and 59252 transitions. [2022-11-03 02:13:43,890 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) [2022-11-03 02:13:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 43233 states and 59252 transitions. [2022-11-03 02:13:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-03 02:13:43,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:43,949 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] [2022-11-03 02:13:43,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:13:43,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:43,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash -778713803, now seen corresponding path program 1 times [2022-11-03 02:13:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048419998] [2022-11-03 02:13:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3709 trivial. 0 not checked. [2022-11-03 02:13:45,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:45,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048419998] [2022-11-03 02:13:45,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048419998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:45,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:45,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:13:45,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755855442] [2022-11-03 02:13:45,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:45,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:13:45,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:13:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:13:45,577 INFO L87 Difference]: Start difference. First operand 43233 states and 59252 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 02:13:50,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:13:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:13:54,410 INFO L93 Difference]: Finished difference Result 107064 states and 151295 transitions. [2022-11-03 02:13:54,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:13:54,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 466 [2022-11-03 02:13:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:13:54,714 INFO L225 Difference]: With dead ends: 107064 [2022-11-03 02:13:54,715 INFO L226 Difference]: Without dead ends: 64200 [2022-11-03 02:13:54,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:13:54,837 INFO L413 NwaCegarLoop]: 2089 mSDtfsCounter, 2368 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 232 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:13:54,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 3817 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 917 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 02:13:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64200 states. [2022-11-03 02:13:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64200 to 43109. [2022-11-03 02:13:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43109 states, 25463 states have (on average 1.26112398381966) internal successors, (32112), 26185 states have internal predecessors, (32112), 13399 states have call successors, (13399), 4244 states have call predecessors, (13399), 4246 states have return successors, (13501), 13241 states have call predecessors, (13501), 13399 states have call successors, (13501) [2022-11-03 02:13:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43109 states to 43109 states and 59012 transitions. [2022-11-03 02:13:58,022 INFO L78 Accepts]: Start accepts. Automaton has 43109 states and 59012 transitions. Word has length 466 [2022-11-03 02:13:58,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:13:58,023 INFO L495 AbstractCegarLoop]: Abstraction has 43109 states and 59012 transitions. [2022-11-03 02:13:58,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2022-11-03 02:13:58,023 INFO L276 IsEmpty]: Start isEmpty. Operand 43109 states and 59012 transitions. [2022-11-03 02:13:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-03 02:13:58,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:13:58,086 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] [2022-11-03 02:13:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:13:58,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:13:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:13:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash 2029449743, now seen corresponding path program 1 times [2022-11-03 02:13:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:13:58,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205593104] [2022-11-03 02:13:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:13:58,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:13:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:13:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3687 trivial. 0 not checked. [2022-11-03 02:13:58,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:13:58,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205593104] [2022-11-03 02:13:58,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205593104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:13:58,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:13:58,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:13:58,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631461018] [2022-11-03 02:13:58,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:13:58,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:13:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:13:58,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:13:58,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:13:58,948 INFO L87 Difference]: Start difference. First operand 43109 states and 59012 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) [2022-11-03 02:14:06,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:08,888 INFO L93 Difference]: Finished difference Result 99931 states and 136762 transitions. [2022-11-03 02:14:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:14:08,889 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 [2022-11-03 02:14:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:09,086 INFO L225 Difference]: With dead ends: 99931 [2022-11-03 02:14:09,086 INFO L226 Difference]: Without dead ends: 57191 [2022-11-03 02:14:09,177 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 [2022-11-03 02:14:09,178 INFO L413 NwaCegarLoop]: 2727 mSDtfsCounter, 1573 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 4714 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:09,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 4714 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1785 Invalid, 1 Unknown, 0 Unchecked, 7.4s Time] [2022-11-03 02:14:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57191 states. [2022-11-03 02:14:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57191 to 57185. [2022-11-03 02:14:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57185 states, 33779 states have (on average 1.2603096598478345) internal successors, (42572), 34740 states have internal predecessors, (42572), 17729 states have call successors, (17729), 5674 states have call predecessors, (17729), 5676 states have return successors, (17861), 17517 states have call predecessors, (17861), 17729 states have call successors, (17861) [2022-11-03 02:14:12,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57185 states to 57185 states and 78162 transitions. [2022-11-03 02:14:12,422 INFO L78 Accepts]: Start accepts. Automaton has 57185 states and 78162 transitions. Word has length 466 [2022-11-03 02:14:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:12,423 INFO L495 AbstractCegarLoop]: Abstraction has 57185 states and 78162 transitions. [2022-11-03 02:14:12,424 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) [2022-11-03 02:14:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 57185 states and 78162 transitions. [2022-11-03 02:14:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-11-03 02:14:12,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:12,495 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] [2022-11-03 02:14:12,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:14:12,496 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:12,497 INFO L85 PathProgramCache]: Analyzing trace with hash -535833492, now seen corresponding path program 1 times [2022-11-03 02:14:12,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:12,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703931322] [2022-11-03 02:14:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-03 02:14:13,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:13,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703931322] [2022-11-03 02:14:13,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703931322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:13,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:13,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:14:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052021297] [2022-11-03 02:14:13,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:14:13,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:14:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:13,216 INFO L87 Difference]: Start difference. First operand 57185 states and 78162 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) [2022-11-03 02:14:21,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:14:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:24,559 INFO L93 Difference]: Finished difference Result 132765 states and 181386 transitions. [2022-11-03 02:14:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:14:24,560 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 [2022-11-03 02:14:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:24,826 INFO L225 Difference]: With dead ends: 132765 [2022-11-03 02:14:24,827 INFO L226 Difference]: Without dead ends: 75949 [2022-11-03 02:14:24,933 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 [2022-11-03 02:14:24,934 INFO L413 NwaCegarLoop]: 2711 mSDtfsCounter, 1551 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 4693 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:24,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 4693 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1768 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2022-11-03 02:14:24,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75949 states. [2022-11-03 02:14:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75949 to 75943. [2022-11-03 02:14:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75943 states, 44871 states have (on average 1.2593434512268502) internal successors, (56508), 46152 states have internal predecessors, (56508), 23465 states have call successors, (23465), 7602 states have call predecessors, (23465), 7606 states have return successors, (23633), 23181 states have call predecessors, (23633), 23465 states have call successors, (23633) [2022-11-03 02:14:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75943 states to 75943 states and 103606 transitions. [2022-11-03 02:14:28,909 INFO L78 Accepts]: Start accepts. Automaton has 75943 states and 103606 transitions. Word has length 471 [2022-11-03 02:14:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:28,914 INFO L495 AbstractCegarLoop]: Abstraction has 75943 states and 103606 transitions. [2022-11-03 02:14:28,915 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) [2022-11-03 02:14:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 75943 states and 103606 transitions. [2022-11-03 02:14:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-03 02:14:29,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:29,248 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] [2022-11-03 02:14:29,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:14:29,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:29,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:29,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1125304306, now seen corresponding path program 1 times [2022-11-03 02:14:29,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476050069] [2022-11-03 02:14:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3729 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2022-11-03 02:14:29,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476050069] [2022-11-03 02:14:29,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476050069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:29,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:29,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:14:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007726352] [2022-11-03 02:14:29,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:29,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:14:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:14:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:14:29,825 INFO L87 Difference]: Start difference. First operand 75943 states and 103606 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)