./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-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7 --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 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:12:26,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:12:26,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:12:26,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:12:26,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:12:26,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:12:26,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:12:26,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:12:26,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:12:26,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:12:26,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:12:26,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:12:26,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:12:26,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:12:26,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:12:26,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:12:26,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:12:26,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:12:26,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:12:26,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:12:26,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:12:26,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:12:26,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:12:26,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:12:26,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:12:26,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:12:26,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:12:26,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:12:26,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:12:26,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:12:26,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:12:26,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:12:26,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:12:26,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:12:26,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:12:26,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:12:26,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:12:26,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:12:26,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:12:26,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:12:26,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:12:26,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:12:26,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:12:26,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:12:26,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:12:26,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:12:26,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:12:26,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:12:26,706 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:12:26,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:12:26,706 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:12:26,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:12:26,707 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:12:26,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:12:26,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:12:26,708 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:12:26,708 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:12:26,708 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:12:26,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:12:26,709 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:12:26,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:12:26,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:12:26,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:12:26,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:12:26,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:12:26,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:12:26,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:12:26,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:12:26,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:12:26,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:12:26,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:12:26,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:12:26,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:12:26,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:12:26,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:12:26,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:12:26,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:12:26,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:12:26,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:12:26,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:12:26,715 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a536358e61e0a2255e3ce0de609a7b791794491b46be2e56aac063bb1d719b1 [2021-11-25 20:12:26,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:12:27,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:12:27,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:12:27,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:12:27,017 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:12:27,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-25 20:12:27,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/data/3104e97ce/5decb194466c4d4fb7dcacdeddad08ac/FLAGef035c053 [2021-11-25 20:12:27,968 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:12:27,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-25 20:12:28,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/data/3104e97ce/5decb194466c4d4fb7dcacdeddad08ac/FLAGef035c053 [2021-11-25 20:12:28,442 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/data/3104e97ce/5decb194466c4d4fb7dcacdeddad08ac [2021-11-25 20:12:28,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:12:28,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:12:28,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:12:28,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:12:28,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:12:28,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:12:28" (1/1) ... [2021-11-25 20:12:28,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a57a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:28, skipping insertion in model container [2021-11-25 20:12:28,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:12:28" (1/1) ... [2021-11-25 20:12:28,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:12:28,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:12:31,399 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_9b790a28-6f83-46bf-8111-0f910c2753b7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2021-11-25 20:12:31,403 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_9b790a28-6f83-46bf-8111-0f910c2753b7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2021-11-25 20:12:31,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:12:31,472 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:12:31,842 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_9b790a28-6f83-46bf-8111-0f910c2753b7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293480,293493] [2021-11-25 20:12:31,843 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_9b790a28-6f83-46bf-8111-0f910c2753b7/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i[293625,293638] [2021-11-25 20:12:31,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:12:32,012 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:12:32,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32 WrapperNode [2021-11-25 20:12:32,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:12:32,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:12:32,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:12:32,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:12:32,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,322 INFO L137 Inliner]: procedures = 363, calls = 2922, calls flagged for inlining = 178, calls inlined = 134, statements flattened = 4869 [2021-11-25 20:12:32,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:12:32,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:12:32,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:12:32,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:12:32,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:12:32,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:12:32,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:12:32,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:12:32,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (1/1) ... [2021-11-25 20:12:32,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:12:32,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:12:32,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:12:32,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b790a28-6f83-46bf-8111-0f910c2753b7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:12:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 20:12:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 20:12:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-25 20:12:32,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-25 20:12:32,752 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-25 20:12:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:12:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:12:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:12:32,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:12:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2021-11-25 20:12:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2021-11-25 20:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-25 20:12:32,754 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-25 20:12:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2021-11-25 20:12:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2021-11-25 20:12:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:12:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:12:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2021-11-25 20:12:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2021-11-25 20:12:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-11-25 20:12:32,756 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-11-25 20:12:32,756 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 20:12:32,756 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 20:12:32,756 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2021-11-25 20:12:32,756 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2021-11-25 20:12:32,756 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-11-25 20:12:32,757 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-11-25 20:12:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2021-11-25 20:12:32,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2021-11-25 20:12:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 20:12:32,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 20:12:32,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:12:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-11-25 20:12:32,758 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-11-25 20:12:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:12:32,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:12:32,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:12:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:12:32,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:12:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2021-11-25 20:12:32,759 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2021-11-25 20:12:32,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:12:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:12:32,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2021-11-25 20:12:32,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2021-11-25 20:12:32,761 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2021-11-25 20:12:32,761 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2021-11-25 20:12:32,762 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 20:12:32,762 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 20:12:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 20:12:32,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 20:12:32,763 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-25 20:12:32,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-25 20:12:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:12:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:12:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2021-11-25 20:12:32,764 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2021-11-25 20:12:32,764 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-11-25 20:12:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-11-25 20:12:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:12:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 20:12:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 20:12:32,765 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 20:12:32,765 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 20:12:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2021-11-25 20:12:32,766 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2021-11-25 20:12:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:12:32,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:12:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:12:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2021-11-25 20:12:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2021-11-25 20:12:32,768 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2021-11-25 20:12:32,768 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2021-11-25 20:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 20:12:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 20:12:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2021-11-25 20:12:32,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2021-11-25 20:12:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:12:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:12:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 20:12:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 20:12:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:12:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:12:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:12:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:12:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 20:12:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 20:12:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-25 20:12:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-25 20:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-11-25 20:12:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-11-25 20:12:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 20:12:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 20:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2021-11-25 20:12:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2021-11-25 20:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-11-25 20:12:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-11-25 20:12:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2021-11-25 20:12:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2021-11-25 20:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:12:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:12:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:12:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:12:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2021-11-25 20:12:32,777 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2021-11-25 20:12:32,779 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-25 20:12:32,779 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-25 20:12:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:12:32,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:12:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:12:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:12:32,782 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-11-25 20:12:32,782 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-11-25 20:12:32,783 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 20:12:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2021-11-25 20:12:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2021-11-25 20:12:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2021-11-25 20:12:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2021-11-25 20:12:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:12:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:12:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:12:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_exclusive_spin_is_locked [2021-11-25 20:12:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2021-11-25 20:12:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2021-11-25 20:12:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2021-11-25 20:12:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2021-11-25 20:12:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-25 20:12:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-25 20:12:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:12:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:12:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2021-11-25 20:12:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2021-11-25 20:12:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2021-11-25 20:12:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2021-11-25 20:12:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2021-11-25 20:12:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2021-11-25 20:12:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:12:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-11-25 20:12:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-11-25 20:12:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:12:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:12:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:12:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:12:33,585 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:12:33,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:12:33,894 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:12:53,615 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:12:53,665 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:12:54,371 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:12:54,371 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:12:54,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:12:54 BoogieIcfgContainer [2021-11-25 20:12:54,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:12:54,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:12:54,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:12:54,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:12:54,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:12:28" (1/3) ... [2021-11-25 20:12:54,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319aeada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:12:54, skipping insertion in model container [2021-11-25 20:12:54,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:12:32" (2/3) ... [2021-11-25 20:12:54,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319aeada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:12:54, skipping insertion in model container [2021-11-25 20:12:54,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:12:54" (3/3) ... [2021-11-25 20:12:54,388 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-media-rc-imon.cil.i [2021-11-25 20:12:54,399 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:12:54,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:12:54,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:12:54,483 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:12:54,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:12:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) [2021-11-25 20:12:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-25 20:12:54,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:12:54,615 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:12:54,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:12:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:12:54,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2134625660, now seen corresponding path program 1 times [2021-11-25 20:12:54,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:12:54,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918382295] [2021-11-25 20:12:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:12:54,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:12:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:12:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 20:12:55,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:12:55,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918382295] [2021-11-25 20:12:55,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918382295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:12:55,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:12:55,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:12:55,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574378030] [2021-11-25 20:12:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:12:55,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:12:55,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:12:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:12:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:12:55,729 INFO L87 Difference]: Start difference. First operand has 1047 states, 628 states have (on average 1.3184713375796178) internal successors, (828), 637 states have internal predecessors, (828), 355 states have call successors, (355), 65 states have call predecessors, (355), 64 states have return successors, (349), 348 states have call predecessors, (349), 349 states have call successors, (349) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 20:12:59,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:12:59,941 INFO L93 Difference]: Finished difference Result 2613 states and 3867 transitions. [2021-11-25 20:12:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:12:59,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 239 [2021-11-25 20:12:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:12:59,975 INFO L225 Difference]: With dead ends: 2613 [2021-11-25 20:12:59,976 INFO L226 Difference]: Without dead ends: 1547 [2021-11-25 20:12:59,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:12:59,991 INFO L933 BasicCegarLoop]: 1484 mSDtfsCounter, 812 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:12:59,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 2748 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 20:13:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2021-11-25 20:13:00,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1543. [2021-11-25 20:13:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 954 states have (on average 1.3092243186582808) internal successors, (1249), 966 states have internal predecessors, (1249), 492 states have call successors, (492), 96 states have call predecessors, (492), 96 states have return successors, (492), 489 states have call predecessors, (492), 492 states have call successors, (492) [2021-11-25 20:13:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2233 transitions. [2021-11-25 20:13:00,250 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2233 transitions. Word has length 239 [2021-11-25 20:13:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:00,252 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 2233 transitions. [2021-11-25 20:13:00,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 20:13:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2233 transitions. [2021-11-25 20:13:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-25 20:13:00,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:00,264 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 20:13:00,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:13:00,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:00,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1430495524, now seen corresponding path program 1 times [2021-11-25 20:13:00,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:00,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348347403] [2021-11-25 20:13:00,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:00,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2021-11-25 20:13:00,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:00,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348347403] [2021-11-25 20:13:00,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348347403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:00,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:00,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:00,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199715807] [2021-11-25 20:13:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:00,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:00,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:00,597 INFO L87 Difference]: Start difference. First operand 1543 states and 2233 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 20:13:04,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:06,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:06,773 INFO L93 Difference]: Finished difference Result 4449 states and 6431 transitions. [2021-11-25 20:13:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 252 [2021-11-25 20:13:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:06,808 INFO L225 Difference]: With dead ends: 4449 [2021-11-25 20:13:06,809 INFO L226 Difference]: Without dead ends: 2945 [2021-11-25 20:13:06,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:06,818 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1308 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:06,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 2766 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 455 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-25 20:13:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-11-25 20:13:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2939. [2021-11-25 20:13:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 1819 states have (on average 1.3100604727872458) internal successors, (2383), 1847 states have internal predecessors, (2383), 929 states have call successors, (929), 190 states have call predecessors, (929), 190 states have return successors, (929), 919 states have call predecessors, (929), 929 states have call successors, (929) [2021-11-25 20:13:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4241 transitions. [2021-11-25 20:13:07,040 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4241 transitions. Word has length 252 [2021-11-25 20:13:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:07,042 INFO L470 AbstractCegarLoop]: Abstraction has 2939 states and 4241 transitions. [2021-11-25 20:13:07,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 20:13:07,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4241 transitions. [2021-11-25 20:13:07,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-25 20:13:07,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:07,055 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 20:13:07,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:13:07,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:07,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:07,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1076459234, now seen corresponding path program 1 times [2021-11-25 20:13:07,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:07,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649024462] [2021-11-25 20:13:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:07,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2021-11-25 20:13:07,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:07,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649024462] [2021-11-25 20:13:07,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649024462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:07,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:07,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:07,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227134430] [2021-11-25 20:13:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:07,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:07,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:07,419 INFO L87 Difference]: Start difference. First operand 2939 states and 4241 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 20:13:11,314 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:13,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:13,129 INFO L93 Difference]: Finished difference Result 6862 states and 9882 transitions. [2021-11-25 20:13:13,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:13,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 255 [2021-11-25 20:13:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:13,163 INFO L225 Difference]: With dead ends: 6862 [2021-11-25 20:13:13,164 INFO L226 Difference]: Without dead ends: 3962 [2021-11-25 20:13:13,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:13,178 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 757 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:13,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 2651 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-25 20:13:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-11-25 20:13:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3958. [2021-11-25 20:13:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3958 states, 2465 states have (on average 1.3087221095334685) internal successors, (3226), 2499 states have internal predecessors, (3226), 1233 states have call successors, (1233), 259 states have call predecessors, (1233), 259 states have return successors, (1233), 1219 states have call predecessors, (1233), 1233 states have call successors, (1233) [2021-11-25 20:13:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3958 states to 3958 states and 5692 transitions. [2021-11-25 20:13:13,392 INFO L78 Accepts]: Start accepts. Automaton has 3958 states and 5692 transitions. Word has length 255 [2021-11-25 20:13:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:13,393 INFO L470 AbstractCegarLoop]: Abstraction has 3958 states and 5692 transitions. [2021-11-25 20:13:13,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 20:13:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3958 states and 5692 transitions. [2021-11-25 20:13:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-25 20:13:13,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:13,402 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 20:13:13,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:13:13,403 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash -594116935, now seen corresponding path program 1 times [2021-11-25 20:13:13,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831299752] [2021-11-25 20:13:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:13,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2021-11-25 20:13:13,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:13,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831299752] [2021-11-25 20:13:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831299752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:13,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:13,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:13,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961489292] [2021-11-25 20:13:13,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:13,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:13,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:13,776 INFO L87 Difference]: Start difference. First operand 3958 states and 5692 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 20:13:16,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:20,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:20,100 INFO L93 Difference]: Finished difference Result 11502 states and 16492 transitions. [2021-11-25 20:13:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:20,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 259 [2021-11-25 20:13:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:20,158 INFO L225 Difference]: With dead ends: 11502 [2021-11-25 20:13:20,159 INFO L226 Difference]: Without dead ends: 7583 [2021-11-25 20:13:20,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:20,179 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1305 mSDsluCounter, 1436 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:20,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 2873 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-11-25 20:13:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2021-11-25 20:13:20,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7575. [2021-11-25 20:13:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7575 states, 4705 states have (on average 1.3005313496280553) internal successors, (6119), 4779 states have internal predecessors, (6119), 2351 states have call successors, (2351), 518 states have call predecessors, (2351), 518 states have return successors, (2351), 2317 states have call predecessors, (2351), 2351 states have call successors, (2351) [2021-11-25 20:13:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 10821 transitions. [2021-11-25 20:13:20,694 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 10821 transitions. Word has length 259 [2021-11-25 20:13:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:20,695 INFO L470 AbstractCegarLoop]: Abstraction has 7575 states and 10821 transitions. [2021-11-25 20:13:20,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-25 20:13:20,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 10821 transitions. [2021-11-25 20:13:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-25 20:13:20,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:20,709 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 3, 3, 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] [2021-11-25 20:13:20,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:13:20,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash -111577827, now seen corresponding path program 1 times [2021-11-25 20:13:20,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:20,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093315655] [2021-11-25 20:13:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:20,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1455 trivial. 0 not checked. [2021-11-25 20:13:20,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:20,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093315655] [2021-11-25 20:13:20,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093315655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:20,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:20,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:20,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780728639] [2021-11-25 20:13:20,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:20,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:20,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:20,990 INFO L87 Difference]: Start difference. First operand 7575 states and 10821 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-25 20:13:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:26,047 INFO L93 Difference]: Finished difference Result 15621 states and 22224 transitions. [2021-11-25 20:13:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 268 [2021-11-25 20:13:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:26,112 INFO L225 Difference]: With dead ends: 15621 [2021-11-25 20:13:26,112 INFO L226 Difference]: Without dead ends: 8085 [2021-11-25 20:13:26,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:26,145 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 573 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:26,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 2575 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 20:13:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2021-11-25 20:13:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 8083. [2021-11-25 20:13:26,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8083 states, 5021 states have (on average 1.2949611631149174) internal successors, (6502), 5096 states have internal predecessors, (6502), 2476 states have call successors, (2476), 585 states have call predecessors, (2476), 585 states have return successors, (2476), 2442 states have call predecessors, (2476), 2476 states have call successors, (2476) [2021-11-25 20:13:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8083 states to 8083 states and 11454 transitions. [2021-11-25 20:13:26,630 INFO L78 Accepts]: Start accepts. Automaton has 8083 states and 11454 transitions. Word has length 268 [2021-11-25 20:13:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:26,631 INFO L470 AbstractCegarLoop]: Abstraction has 8083 states and 11454 transitions. [2021-11-25 20:13:26,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2021-11-25 20:13:26,632 INFO L276 IsEmpty]: Start isEmpty. Operand 8083 states and 11454 transitions. [2021-11-25 20:13:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-25 20:13:26,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:26,642 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2021-11-25 20:13:26,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:13:26,643 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:26,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1938418600, now seen corresponding path program 1 times [2021-11-25 20:13:26,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802092081] [2021-11-25 20:13:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:26,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-25 20:13:26,904 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:26,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802092081] [2021-11-25 20:13:26,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802092081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:26,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:26,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:26,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452355135] [2021-11-25 20:13:26,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:26,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:26,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:26,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:26,907 INFO L87 Difference]: Start difference. First operand 8083 states and 11454 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 20:13:30,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:32,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:32,999 INFO L93 Difference]: Finished difference Result 22913 states and 32345 transitions. [2021-11-25 20:13:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:33,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 280 [2021-11-25 20:13:33,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:33,080 INFO L225 Difference]: With dead ends: 22913 [2021-11-25 20:13:33,080 INFO L226 Difference]: Without dead ends: 14869 [2021-11-25 20:13:33,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:33,114 INFO L933 BasicCegarLoop]: 1533 mSDtfsCounter, 1273 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:33,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 2751 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 465 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 20:13:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14869 states. [2021-11-25 20:13:34,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14869 to 14843. [2021-11-25 20:13:34,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14843 states, 9286 states have (on average 1.2893603273745424) internal successors, (11973), 9459 states have internal predecessors, (11973), 4417 states have call successors, (4417), 1139 states have call predecessors, (4417), 1139 states have return successors, (4417), 4325 states have call predecessors, (4417), 4417 states have call successors, (4417) [2021-11-25 20:13:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14843 states to 14843 states and 20807 transitions. [2021-11-25 20:13:34,331 INFO L78 Accepts]: Start accepts. Automaton has 14843 states and 20807 transitions. Word has length 280 [2021-11-25 20:13:34,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:34,331 INFO L470 AbstractCegarLoop]: Abstraction has 14843 states and 20807 transitions. [2021-11-25 20:13:34,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-25 20:13:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 14843 states and 20807 transitions. [2021-11-25 20:13:34,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-25 20:13:34,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:34,366 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2021-11-25 20:13:34,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:13:34,366 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:34,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 240678243, now seen corresponding path program 1 times [2021-11-25 20:13:34,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:34,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922424483] [2021-11-25 20:13:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:34,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:34,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-25 20:13:34,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:34,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922424483] [2021-11-25 20:13:34,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922424483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:34,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:34,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:34,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648185756] [2021-11-25 20:13:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:34,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:34,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:34,618 INFO L87 Difference]: Start difference. First operand 14843 states and 20807 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 20:13:37,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:39,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:41,224 INFO L93 Difference]: Finished difference Result 41049 states and 57378 transitions. [2021-11-25 20:13:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 289 [2021-11-25 20:13:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:41,348 INFO L225 Difference]: With dead ends: 41049 [2021-11-25 20:13:41,348 INFO L226 Difference]: Without dead ends: 26245 [2021-11-25 20:13:41,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:41,395 INFO L933 BasicCegarLoop]: 1640 mSDtfsCounter, 1256 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:41,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 2858 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-25 20:13:41,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26245 states. [2021-11-25 20:13:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26245 to 26219. [2021-11-25 20:13:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26219 states, 16555 states have (on average 1.2806402899426155) internal successors, (21201), 16911 states have internal predecessors, (21201), 7589 states have call successors, (7589), 2074 states have call predecessors, (7589), 2074 states have return successors, (7589), 7381 states have call predecessors, (7589), 7589 states have call successors, (7589) [2021-11-25 20:13:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26219 states to 26219 states and 36379 transitions. [2021-11-25 20:13:42,751 INFO L78 Accepts]: Start accepts. Automaton has 26219 states and 36379 transitions. Word has length 289 [2021-11-25 20:13:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:42,753 INFO L470 AbstractCegarLoop]: Abstraction has 26219 states and 36379 transitions. [2021-11-25 20:13:42,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 20:13:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 26219 states and 36379 transitions. [2021-11-25 20:13:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-25 20:13:42,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:42,783 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2021-11-25 20:13:42,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:13:42,784 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1036113000, now seen corresponding path program 1 times [2021-11-25 20:13:42,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:42,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447646975] [2021-11-25 20:13:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:42,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2021-11-25 20:13:43,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447646975] [2021-11-25 20:13:43,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447646975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:43,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:43,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:43,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703830728] [2021-11-25 20:13:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:43,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:43,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:43,235 INFO L87 Difference]: Start difference. First operand 26219 states and 36379 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:13:46,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:13:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:13:50,185 INFO L93 Difference]: Finished difference Result 71497 states and 98857 transitions. [2021-11-25 20:13:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:13:50,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 304 [2021-11-25 20:13:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:13:50,423 INFO L225 Difference]: With dead ends: 71497 [2021-11-25 20:13:50,423 INFO L226 Difference]: Without dead ends: 45411 [2021-11-25 20:13:50,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:50,489 INFO L933 BasicCegarLoop]: 1420 mSDtfsCounter, 1427 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:13:50,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 2082 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 20:13:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45411 states. [2021-11-25 20:13:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45411 to 39007. [2021-11-25 20:13:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39007 states, 24677 states have (on average 1.2810714430441301) internal successors, (31613), 25201 states have internal predecessors, (31613), 11148 states have call successors, (11148), 3181 states have call predecessors, (11148), 3181 states have return successors, (11148), 10796 states have call predecessors, (11148), 11148 states have call successors, (11148) [2021-11-25 20:13:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39007 states to 39007 states and 53909 transitions. [2021-11-25 20:13:53,089 INFO L78 Accepts]: Start accepts. Automaton has 39007 states and 53909 transitions. Word has length 304 [2021-11-25 20:13:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:13:53,095 INFO L470 AbstractCegarLoop]: Abstraction has 39007 states and 53909 transitions. [2021-11-25 20:13:53,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:13:53,096 INFO L276 IsEmpty]: Start isEmpty. Operand 39007 states and 53909 transitions. [2021-11-25 20:13:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-11-25 20:13:53,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:13:53,171 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 5, 5, 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] [2021-11-25 20:13:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:13:53,172 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:13:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:13:53,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1387648963, now seen corresponding path program 1 times [2021-11-25 20:13:53,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:13:53,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092639457] [2021-11-25 20:13:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:13:53,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:13:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:13:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1611 trivial. 0 not checked. [2021-11-25 20:13:53,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:13:53,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092639457] [2021-11-25 20:13:53,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092639457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:13:53,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:13:53,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:13:53,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746246769] [2021-11-25 20:13:53,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:13:53,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:13:53,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:13:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:13:53,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:13:53,623 INFO L87 Difference]: Start difference. First operand 39007 states and 53909 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:13:59,925 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:02,966 INFO L93 Difference]: Finished difference Result 84648 states and 116868 transitions. [2021-11-25 20:14:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:14:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 308 [2021-11-25 20:14:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:03,223 INFO L225 Difference]: With dead ends: 84648 [2021-11-25 20:14:03,224 INFO L226 Difference]: Without dead ends: 45774 [2021-11-25 20:14:03,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:03,317 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 1185 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:03,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 2750 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 546 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-25 20:14:03,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45774 states. [2021-11-25 20:14:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45774 to 45740. [2021-11-25 20:14:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45740 states, 28944 states have (on average 1.2783996683250414) internal successors, (37002), 29560 states have internal predecessors, (37002), 12973 states have call successors, (12973), 3822 states have call predecessors, (12973), 3822 states have return successors, (12973), 12541 states have call predecessors, (12973), 12973 states have call successors, (12973) [2021-11-25 20:14:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45740 states to 45740 states and 62948 transitions. [2021-11-25 20:14:05,577 INFO L78 Accepts]: Start accepts. Automaton has 45740 states and 62948 transitions. Word has length 308 [2021-11-25 20:14:05,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:05,578 INFO L470 AbstractCegarLoop]: Abstraction has 45740 states and 62948 transitions. [2021-11-25 20:14:05,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 20:14:05,578 INFO L276 IsEmpty]: Start isEmpty. Operand 45740 states and 62948 transitions. [2021-11-25 20:14:05,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-25 20:14:05,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:05,612 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 20:14:05,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:14:05,612 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash 320333641, now seen corresponding path program 1 times [2021-11-25 20:14:05,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:05,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575231473] [2021-11-25 20:14:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:05,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2021-11-25 20:14:05,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:05,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575231473] [2021-11-25 20:14:05,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575231473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:05,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:05,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:14:05,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285810410] [2021-11-25 20:14:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:05,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:05,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:05,896 INFO L87 Difference]: Start difference. First operand 45740 states and 62948 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 20:14:08,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:13,903 INFO L93 Difference]: Finished difference Result 112626 states and 155024 transitions. [2021-11-25 20:14:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:14:13,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 312 [2021-11-25 20:14:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:14,462 INFO L225 Difference]: With dead ends: 112626 [2021-11-25 20:14:14,463 INFO L226 Difference]: Without dead ends: 67019 [2021-11-25 20:14:14,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:14,575 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 1308 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:14,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 3361 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 20:14:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67019 states. [2021-11-25 20:14:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67019 to 66969. [2021-11-25 20:14:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66969 states, 42341 states have (on average 1.2773198554592475) internal successors, (54083), 43289 states have internal predecessors, (54083), 18959 states have call successors, (18959), 5668 states have call predecessors, (18959), 5668 states have return successors, (18959), 18287 states have call predecessors, (18959), 18959 states have call successors, (18959) [2021-11-25 20:14:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66969 states to 66969 states and 92001 transitions. [2021-11-25 20:14:17,574 INFO L78 Accepts]: Start accepts. Automaton has 66969 states and 92001 transitions. Word has length 312 [2021-11-25 20:14:17,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:17,579 INFO L470 AbstractCegarLoop]: Abstraction has 66969 states and 92001 transitions. [2021-11-25 20:14:17,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 20:14:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand 66969 states and 92001 transitions. [2021-11-25 20:14:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-25 20:14:17,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:17,633 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 20:14:17,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:14:17,634 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1041429748, now seen corresponding path program 1 times [2021-11-25 20:14:17,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:17,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077974200] [2021-11-25 20:14:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:17,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1631 trivial. 0 not checked. [2021-11-25 20:14:17,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077974200] [2021-11-25 20:14:17,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077974200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:17,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:17,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:14:17,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506184311] [2021-11-25 20:14:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:17,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:17,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:17,938 INFO L87 Difference]: Start difference. First operand 66969 states and 92001 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, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 20:14:21,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:27,522 INFO L93 Difference]: Finished difference Result 164881 states and 226387 transitions. [2021-11-25 20:14:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:14:27,532 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, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 319 [2021-11-25 20:14:27,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:28,245 INFO L225 Difference]: With dead ends: 164881 [2021-11-25 20:14:28,246 INFO L226 Difference]: Without dead ends: 98045 [2021-11-25 20:14:28,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:28,449 INFO L933 BasicCegarLoop]: 2295 mSDtfsCounter, 1305 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:28,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 3519 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 646 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-25 20:14:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98045 states. [2021-11-25 20:14:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98045 to 97995. [2021-11-25 20:14:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97995 states, 61833 states have (on average 1.2733815276632219) internal successors, (78737), 63279 states have internal predecessors, (78737), 27739 states have call successors, (27739), 8422 states have call predecessors, (27739), 8422 states have return successors, (27739), 26707 states have call predecessors, (27739), 27739 states have call successors, (27739) [2021-11-25 20:14:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97995 states to 97995 states and 134215 transitions. [2021-11-25 20:14:32,469 INFO L78 Accepts]: Start accepts. Automaton has 97995 states and 134215 transitions. Word has length 319 [2021-11-25 20:14:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:32,470 INFO L470 AbstractCegarLoop]: Abstraction has 97995 states and 134215 transitions. [2021-11-25 20:14:32,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-25 20:14:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 97995 states and 134215 transitions. [2021-11-25 20:14:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-25 20:14:32,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:32,523 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 6, 6, 4, 4, 4, 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] [2021-11-25 20:14:32,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:14:32,524 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash -139400590, now seen corresponding path program 1 times [2021-11-25 20:14:32,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:32,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453119671] [2021-11-25 20:14:32,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:32,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1736 trivial. 0 not checked. [2021-11-25 20:14:32,800 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453119671] [2021-11-25 20:14:32,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453119671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:32,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:32,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:14:32,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491246211] [2021-11-25 20:14:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:32,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:14:32,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:14:32,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:14:32,803 INFO L87 Difference]: Start difference. First operand 97995 states and 134215 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 20:14:36,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:14:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:14:46,001 INFO L93 Difference]: Finished difference Result 228109 states and 312159 transitions. [2021-11-25 20:14:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:14:46,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 329 [2021-11-25 20:14:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:14:46,554 INFO L225 Difference]: With dead ends: 228109 [2021-11-25 20:14:46,554 INFO L226 Difference]: Without dead ends: 130247 [2021-11-25 20:14:47,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:14:47,036 INFO L933 BasicCegarLoop]: 2346 mSDtfsCounter, 1336 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 4090 SdHoareTripleChecker+Invalid, 1473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:14:47,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 4090 Invalid, 1473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1454 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 20:14:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130247 states. [2021-11-25 20:14:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130247 to 130197. [2021-11-25 20:14:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130197 states, 82069 states have (on average 1.271210810415626) internal successors, (104327), 84013 states have internal predecessors, (104327), 36687 states have call successors, (36687), 11440 states have call predecessors, (36687), 11440 states have return successors, (36687), 35295 states have call predecessors, (36687), 36687 states have call successors, (36687) [2021-11-25 20:14:52,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130197 states to 130197 states and 177701 transitions. [2021-11-25 20:14:52,737 INFO L78 Accepts]: Start accepts. Automaton has 130197 states and 177701 transitions. Word has length 329 [2021-11-25 20:14:52,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:14:52,738 INFO L470 AbstractCegarLoop]: Abstraction has 130197 states and 177701 transitions. [2021-11-25 20:14:52,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 20:14:52,738 INFO L276 IsEmpty]: Start isEmpty. Operand 130197 states and 177701 transitions. [2021-11-25 20:14:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-11-25 20:14:52,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:14:52,820 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:14:52,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:14:52,821 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_alloc_flagsErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:14:52,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:14:52,822 INFO L85 PathProgramCache]: Analyzing trace with hash 256497189, now seen corresponding path program 1 times [2021-11-25 20:14:52,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:14:52,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46332259] [2021-11-25 20:14:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:14:52,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:14:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:14:53,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2021-11-25 20:14:53,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:14:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46332259] [2021-11-25 20:14:53,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46332259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:14:53,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:14:53,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:14:53,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652816186] [2021-11-25 20:14:53,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:14:53,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:14:53,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:14:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:14:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:14:53,118 INFO L87 Difference]: Start difference. First operand 130197 states and 177701 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 3 states have call predecessors, (40), 3 states have call successors, (40)