./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 73868717431db2e2213c78014bba9664fa2a1aea672a285381bce5667bb4d0d4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:35:28,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:35:28,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:35:28,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:35:28,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:35:28,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:35:28,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:35:28,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:35:28,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:35:28,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:35:28,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:35:28,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:35:28,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:35:28,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:35:28,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:35:28,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:35:28,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:35:28,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:35:28,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:35:28,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:35:28,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:35:28,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:35:28,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:35:28,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:35:28,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:35:28,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:35:28,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:35:28,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:35:28,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:35:28,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:35:28,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:35:28,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:35:28,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:35:28,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:35:28,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:35:28,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:35:28,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:35:28,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:35:28,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:35:28,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:35:28,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:35:28,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:35:28,375 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:35:28,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:35:28,376 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:35:28,376 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:35:28,377 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:35:28,377 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:35:28,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:35:28,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:35:28,378 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:35:28,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:35:28,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:35:28,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:35:28,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:35:28,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:35:28,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:35:28,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:35:28,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:35:28,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:35:28,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:35:28,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:35:28,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:35:28,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:35:28,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:35:28,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:35:28,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:35:28,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:35:28,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:35:28,383 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:35:28,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:35:28,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:35:28,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:35:28,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73868717431db2e2213c78014bba9664fa2a1aea672a285381bce5667bb4d0d4 [2021-11-13 17:35:28,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:35:28,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:35:28,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:35:28,676 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:35:28,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:35:28,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i [2021-11-13 17:35:28,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/data/be19605b0/f8b7a662458f4c378648fa7785d213cb/FLAG9975dc863 [2021-11-13 17:35:29,807 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:35:29,808 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i [2021-11-13 17:35:29,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/data/be19605b0/f8b7a662458f4c378648fa7785d213cb/FLAG9975dc863 [2021-11-13 17:35:30,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/data/be19605b0/f8b7a662458f4c378648fa7785d213cb [2021-11-13 17:35:30,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:35:30,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:35:30,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:35:30,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:35:30,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:35:30,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:35:30" (1/1) ... [2021-11-13 17:35:30,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e11eccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:30, skipping insertion in model container [2021-11-13 17:35:30,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:35:30" (1/1) ... [2021-11-13 17:35:30,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:35:30,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:35:34,242 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421155,421168] [2021-11-13 17:35:34,245 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421302,421315] [2021-11-13 17:35:34,247 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421441,421454] [2021-11-13 17:35:34,247 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421599,421612] [2021-11-13 17:35:34,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:35:34,321 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:35:34,875 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421155,421168] [2021-11-13 17:35:34,876 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421302,421315] [2021-11-13 17:35:34,876 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421441,421454] [2021-11-13 17:35:34,877 WARN L228 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_71c9d0ac-313f-4140-ade0-d7502ce81710/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i[421599,421612] [2021-11-13 17:35:34,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:35:35,215 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:35:35,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35 WrapperNode [2021-11-13 17:35:35,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:35:35,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:35:35,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:35:35,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:35:35,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,699 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:35:35,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:35:35,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:35:35,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:35:35,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:35,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:36,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:36,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:35:36,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:35:36,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:35:36,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:35:36,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (1/1) ... [2021-11-13 17:35:36,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:35:36,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:35:36,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:35:36,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71c9d0ac-313f-4140-ade0-d7502ce81710/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:35:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-13 17:35:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-13 17:35:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure ipv6_hdr [2021-11-13 17:35:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ipv6_hdr [2021-11-13 17:35:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure device_set_wakeup_enable [2021-11-13 17:35:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure device_set_wakeup_enable [2021-11-13 17:35:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-13 17:35:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-13 17:35:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_mac_processor [2021-11-13 17:35:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_mac_processor [2021-11-13 17:35:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:35:36,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:35:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32 [2021-11-13 17:35:36,195 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32 [2021-11-13 17:35:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-13 17:35:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-13 17:35:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_regs_len [2021-11-13 17:35:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_regs_len [2021-11-13 17:35:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 17:35:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 17:35:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:35:36,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:35:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_on [2021-11-13 17:35:36,197 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_on [2021-11-13 17:35:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_rx_engine [2021-11-13 17:35:36,197 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_rx_engine [2021-11-13 17:35:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-13 17:35:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-13 17:35:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-13 17:35:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-13 17:35:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 17:35:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 17:35:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 17:35:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 17:35:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_link [2021-11-13 17:35:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_link [2021-11-13 17:35:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:35:36,200 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:35:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure jme_netpoll [2021-11-13 17:35:36,200 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_netpoll [2021-11-13 17:35:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-13 17:35:36,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-13 17:35:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-13 17:35:36,201 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-13 17:35:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 17:35:36,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 17:35:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-13 17:35:36,202 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-13 17:35:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-13 17:35:36,203 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-13 17:35:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-13 17:35:36,203 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 17:35:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 17:35:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 17:35:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 17:35:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-13 17:35:36,206 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-13 17:35:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:35:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-13 17:35:36,206 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-13 17:35:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure jread32 [2021-11-13 17:35:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure jread32 [2021-11-13 17:35:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-13 17:35:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-13 17:35:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-13 17:35:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 17:35:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_rx_pcc [2021-11-13 17:35:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_rx_pcc [2021-11-13 17:35:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2021-11-13 17:35:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2021-11-13 17:35:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2021-11-13 17:35:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2021-11-13 17:35:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:35:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_unicastaddr [2021-11-13 17:35:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_unicastaddr [2021-11-13 17:35:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 17:35:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 17:35:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-13 17:35:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-13 17:35:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:35:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 17:35:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 17:35:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_calibration [2021-11-13 17:35:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_calibration [2021-11-13 17:35:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:35:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 17:35:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 17:35:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure jme_restart_rx_engine [2021-11-13 17:35:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_restart_rx_engine [2021-11-13 17:35:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:35:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:35:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure skb_transport_header [2021-11-13 17:35:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_transport_header [2021-11-13 17:35:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-13 17:35:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-13 17:35:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-13 17:35:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-13 17:35:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_hi_schedule [2021-11-13 17:35:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_hi_schedule [2021-11-13 17:35:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-13 17:35:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-13 17:35:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-13 17:35:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-13 17:35:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure jme_linkstat_from_phy [2021-11-13 17:35:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_linkstat_from_phy [2021-11-13 17:35:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_write [2021-11-13 17:35:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_write [2021-11-13 17:35:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_on [2021-11-13 17:35:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_on [2021-11-13 17:35:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:35:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 17:35:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 17:35:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 17:35:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 17:35:36,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-13 17:35:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-13 17:35:36,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-13 17:35:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-13 17:35:36,227 INFO L130 BoogieDeclarations]: Found specification of procedure smi_phy_addr [2021-11-13 17:35:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_phy_addr [2021-11-13 17:35:36,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 17:35:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 17:35:36,234 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 17:35:36,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 17:35:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:35:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-13 17:35:36,235 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-13 17:35:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:35:36,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:35:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-13 17:35:36,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-13 17:35:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-13 17:35:36,236 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-13 17:35:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-13 17:35:36,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-13 17:35:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure reg_dbg [2021-11-13 17:35:36,237 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_dbg [2021-11-13 17:35:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 17:35:36,237 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 17:35:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-13 17:35:36,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-13 17:35:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-13 17:35:36,238 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-13 17:35:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 17:35:36,238 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 17:35:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure jme_start_irq [2021-11-13 17:35:36,238 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_start_irq [2021-11-13 17:35:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-13 17:35:36,238 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-13 17:35:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:35:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:35:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2021-11-13 17:35:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2021-11-13 17:35:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure tcp_hdr [2021-11-13 17:35:36,239 INFO L138 BoogieDeclarations]: Found implementation of procedure tcp_hdr [2021-11-13 17:35:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure jme_fill_tx_map [2021-11-13 17:35:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_fill_tx_map [2021-11-13 17:35:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_tx_resources [2021-11-13 17:35:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_tx_resources [2021-11-13 17:35:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-13 17:35:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-13 17:35:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure jme_polling_mode [2021-11-13 17:35:36,240 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_polling_mode [2021-11-13 17:35:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:35:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable_pending [2021-11-13 17:35:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable_pending [2021-11-13 17:35:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:35:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:35:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:35:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure jme_remove_one [2021-11-13 17:35:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_remove_one [2021-11-13 17:35:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure jme_powersave_phy [2021-11-13 17:35:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_powersave_phy [2021-11-13 17:35:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_on [2021-11-13 17:35:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_on [2021-11-13 17:35:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-13 17:35:36,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_jme_cleanup_module_13_2 [2021-11-13 17:35:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure new_phy_power_ctrl [2021-11-13 17:35:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure new_phy_power_ctrl [2021-11-13 17:35:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-13 17:35:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-13 17:35:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-13 17:35:36,243 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-13 17:35:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure jme_intr_msi [2021-11-13 17:35:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_intr_msi [2021-11-13 17:35:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure jwrite32f [2021-11-13 17:35:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure jwrite32f [2021-11-13 17:35:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure smi_reg_addr [2021-11-13 17:35:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure smi_reg_addr [2021-11-13 17:35:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_settings [2021-11-13 17:35:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_settings [2021-11-13 17:35:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure ip_hdr [2021-11-13 17:35:36,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ip_hdr [2021-11-13 17:35:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 17:35:36,245 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 17:35:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:35:36,245 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:35:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 17:35:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 17:35:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-13 17:35:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-13 17:35:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-13 17:35:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-13 17:35:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure jme_nway_reset [2021-11-13 17:35:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_nway_reset [2021-11-13 17:35:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-13 17:35:36,247 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-13 17:35:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:35:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-13 17:35:36,247 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-13 17:35:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 17:35:36,247 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 17:35:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value_probe [2021-11-13 17:35:36,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value_probe [2021-11-13 17:35:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:35:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure jme_free_rx_resources [2021-11-13 17:35:36,248 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_free_rx_resources [2021-11-13 17:35:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure jme_resume [2021-11-13 17:35:36,248 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_resume [2021-11-13 17:35:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure jme_tx_timeout [2021-11-13 17:35:36,249 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_tx_timeout [2021-11-13 17:35:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:35:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure jme_disable_tx_engine [2021-11-13 17:35:36,249 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_disable_tx_engine [2021-11-13 17:35:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-13 17:35:36,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-13 17:35:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-13 17:35:36,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-13 17:35:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 17:35:36,250 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 17:35:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 17:35:36,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 17:35:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_txclk_off [2021-11-13 17:35:36,251 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_txclk_off [2021-11-13 17:35:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_setEA [2021-11-13 17:35:36,251 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_setEA [2021-11-13 17:35:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-13 17:35:36,251 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-13 17:35:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_multi [2021-11-13 17:35:36,252 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_multi [2021-11-13 17:35:36,256 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-13 17:35:36,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-13 17:35:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure mmapio_memcpy [2021-11-13 17:35:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure mmapio_memcpy [2021-11-13 17:35:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-13 17:35:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-13 17:35:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 17:35:36,257 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 17:35:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_read [2021-11-13 17:35:36,258 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_read [2021-11-13 17:35:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure jme_clear_pm [2021-11-13 17:35:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_clear_pm [2021-11-13 17:35:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_disable [2021-11-13 17:35:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_disable [2021-11-13 17:35:36,260 INFO L130 BoogieDeclarations]: Found specification of procedure jme_close [2021-11-13 17:35:36,260 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_close [2021-11-13 17:35:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 17:35:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 17:35:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure skb_network_header [2021-11-13 17:35:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_network_header [2021-11-13 17:35:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_irq [2021-11-13 17:35:36,261 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_irq [2021-11-13 17:35:36,261 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:35:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:35:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure jme_shutdown [2021-11-13 17:35:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_shutdown [2021-11-13 17:35:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:35:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mac_rxclk_off [2021-11-13 17:35:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mac_rxclk_off [2021-11-13 17:35:36,262 INFO L130 BoogieDeclarations]: Found specification of procedure jme_reset_phy_processor [2021-11-13 17:35:36,262 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_reset_phy_processor [2021-11-13 17:35:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure jme_suspend [2021-11-13 17:35:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_suspend [2021-11-13 17:35:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:35:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:35:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-13 17:35:36,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-13 17:35:36,263 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_specreg_write [2021-11-13 17:35:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_specreg_write [2021-11-13 17:35:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 17:35:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 17:35:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure jme_phy_off [2021-11-13 17:35:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_phy_off [2021-11-13 17:35:36,264 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_phyfifo_5level [2021-11-13 17:35:36,264 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_phyfifo_5level [2021-11-13 17:35:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-13 17:35:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-13 17:35:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-13 17:35:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-13 17:35:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure jme_get_eeprom_len [2021-11-13 17:35:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_get_eeprom_len [2021-11-13 17:35:36,265 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2021-11-13 17:35:36,265 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2021-11-13 17:35:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 17:35:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 17:35:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure jme_stop_pcc_timer [2021-11-13 17:35:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_stop_pcc_timer [2021-11-13 17:35:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure jme_interrupt_mode [2021-11-13 17:35:36,266 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_interrupt_mode [2021-11-13 17:35:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure jme_set_settings [2021-11-13 17:35:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_set_settings [2021-11-13 17:35:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure jme_mdio_read [2021-11-13 17:35:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_mdio_read [2021-11-13 17:35:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-11-13 17:35:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-11-13 17:35:36,267 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-13 17:35:36,267 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-13 17:35:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:35:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure jme_open [2021-11-13 17:35:36,268 INFO L138 BoogieDeclarations]: Found implementation of procedure jme_open [2021-11-13 17:35:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 17:35:36,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 17:35:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-13 17:35:36,268 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-13 17:35:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_enable [2021-11-13 17:35:36,269 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_enable [2021-11-13 17:35:37,761 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:35:47,793 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 17:35:48,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:35:48,068 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-13 17:35:48,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:35:48 BoogieIcfgContainer [2021-11-13 17:35:48,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:35:48,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:35:48,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:35:48,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:35:48,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:35:30" (1/3) ... [2021-11-13 17:35:48,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5d1967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:35:48, skipping insertion in model container [2021-11-13 17:35:48,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:35:35" (2/3) ... [2021-11-13 17:35:48,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5d1967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:35:48, skipping insertion in model container [2021-11-13 17:35:48,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:35:48" (3/3) ... [2021-11-13 17:35:48,085 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-ethernet-jme.cil.i [2021-11-13 17:35:48,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:35:48,091 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 17:35:48,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:35:48,173 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=PETRI_NET, 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 [2021-11-13 17:35:48,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 17:35:48,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 2623 states, 1769 states have (on average 1.2679479932165065) internal successors, (2243), 1819 states have internal predecessors, (2243), 707 states have call successors, (707), 150 states have call predecessors, (707), 149 states have return successors, (698), 682 states have call predecessors, (698), 698 states have call successors, (698) [2021-11-13 17:35:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-13 17:35:48,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:35:48,295 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:35:48,295 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:35:48,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:35:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1083525696, now seen corresponding path program 1 times [2021-11-13 17:35:48,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:35:48,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606574588] [2021-11-13 17:35:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:35:48,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:35:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:35:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:35:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:35:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:35:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:35:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:35:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:35:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:35:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:35:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:35:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:35:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:35:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:35:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:35:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:35:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:35:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:35:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:35:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:35:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:35:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-11-13 17:35:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:35:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-13 17:35:49,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:35:49,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606574588] [2021-11-13 17:35:49,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606574588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:35:49,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:35:49,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:35:49,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647102960] [2021-11-13 17:35:49,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:35:49,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:35:49,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:35:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:35:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:35:49,918 INFO L87 Difference]: Start difference. First operand has 2623 states, 1769 states have (on average 1.2679479932165065) internal successors, (2243), 1819 states have internal predecessors, (2243), 707 states have call successors, (707), 150 states have call predecessors, (707), 149 states have return successors, (698), 682 states have call predecessors, (698), 698 states have call successors, (698) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-13 17:35:51,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:35:53,980 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:04,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:04,196 INFO L93 Difference]: Finished difference Result 7895 states and 11207 transitions. [2021-11-13 17:36:04,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:36:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 225 [2021-11-13 17:36:04,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:04,292 INFO L225 Difference]: With dead ends: 7895 [2021-11-13 17:36:04,293 INFO L226 Difference]: Without dead ends: 5299 [2021-11-13 17:36:04,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:36:04,329 INFO L933 BasicCegarLoop]: 3766 mSDtfsCounter, 4559 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 2320 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11702.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5212 SdHoareTripleChecker+Valid, 7663 SdHoareTripleChecker+Invalid, 4878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.27ms SdHoareTripleChecker+Time, 2320 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13457.95ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:04,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5212 Valid, 7663 Invalid, 4878 Unknown, 0 Unchecked, 121.27ms Time], IncrementalHoareTripleChecker [2320 Valid, 2557 Invalid, 1 Unknown, 0 Unchecked, 13457.95ms Time] [2021-11-13 17:36:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-11-13 17:36:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 5075. [2021-11-13 17:36:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5075 states, 3428 states have (on average 1.2613768961493583) internal successors, (4324), 3521 states have internal predecessors, (4324), 1350 states have call successors, (1350), 296 states have call predecessors, (1350), 295 states have return successors, (1347), 1315 states have call predecessors, (1347), 1347 states have call successors, (1347) [2021-11-13 17:36:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5075 states to 5075 states and 7021 transitions. [2021-11-13 17:36:04,934 INFO L78 Accepts]: Start accepts. Automaton has 5075 states and 7021 transitions. Word has length 225 [2021-11-13 17:36:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:04,940 INFO L470 AbstractCegarLoop]: Abstraction has 5075 states and 7021 transitions. [2021-11-13 17:36:04,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-13 17:36:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5075 states and 7021 transitions. [2021-11-13 17:36:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-13 17:36:04,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:04,961 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:36:04,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:36:04,961 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1849670218, now seen corresponding path program 1 times [2021-11-13 17:36:04,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:04,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289634156] [2021-11-13 17:36:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:04,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:36:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:36:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:36:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:36:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:36:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:36:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:36:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:36:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:36:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:36:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:36:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:36:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:36:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:36:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:36:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:36:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:36:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:36:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-13 17:36:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-13 17:36:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2021-11-13 17:36:05,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:05,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289634156] [2021-11-13 17:36:05,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289634156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:05,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:05,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:36:05,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842583313] [2021-11-13 17:36:05,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:05,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:05,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:05,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:05,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:05,790 INFO L87 Difference]: Start difference. First operand 5075 states and 7021 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 17:36:07,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:09,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:19,507 INFO L93 Difference]: Finished difference Result 12319 states and 17149 transitions. [2021-11-13 17:36:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:36:19,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 247 [2021-11-13 17:36:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:19,589 INFO L225 Difference]: With dead ends: 12319 [2021-11-13 17:36:19,589 INFO L226 Difference]: Without dead ends: 7285 [2021-11-13 17:36:19,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:36:19,713 INFO L933 BasicCegarLoop]: 3661 mSDtfsCounter, 4115 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 2224 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11625.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 7537 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 97.26ms SdHoareTripleChecker+Time, 2224 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12909.64ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:19,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 7537 Invalid, 4736 Unknown, 0 Unchecked, 97.26ms Time], IncrementalHoareTripleChecker [2224 Valid, 2510 Invalid, 2 Unknown, 0 Unchecked, 12909.64ms Time] [2021-11-13 17:36:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7285 states. [2021-11-13 17:36:20,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7285 to 6947. [2021-11-13 17:36:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6947 states, 4702 states have (on average 1.2566992769034453) internal successors, (5909), 4830 states have internal predecessors, (5909), 1820 states have call successors, (1820), 425 states have call predecessors, (1820), 423 states have return successors, (1817), 1768 states have call predecessors, (1817), 1817 states have call successors, (1817) [2021-11-13 17:36:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6947 states to 6947 states and 9546 transitions. [2021-11-13 17:36:20,148 INFO L78 Accepts]: Start accepts. Automaton has 6947 states and 9546 transitions. Word has length 247 [2021-11-13 17:36:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:20,150 INFO L470 AbstractCegarLoop]: Abstraction has 6947 states and 9546 transitions. [2021-11-13 17:36:20,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-13 17:36:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 6947 states and 9546 transitions. [2021-11-13 17:36:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-13 17:36:20,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:20,178 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 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] [2021-11-13 17:36:20,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:36:20,179 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:20,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1107087926, now seen corresponding path program 1 times [2021-11-13 17:36:20,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:20,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404140600] [2021-11-13 17:36:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:20,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:36:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:36:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:36:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:36:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:36:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:36:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:36:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:36:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:36:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:36:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:36:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:36:20,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:36:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:36:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:36:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:36:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:36:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:36:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-11-13 17:36:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:36:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:36:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-13 17:36:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1435 trivial. 0 not checked. [2021-11-13 17:36:20,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:20,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404140600] [2021-11-13 17:36:20,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404140600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:20,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:20,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:36:20,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138062111] [2021-11-13 17:36:20,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:20,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:20,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:20,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:20,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:20,914 INFO L87 Difference]: Start difference. First operand 6947 states and 9546 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 17:36:22,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:25,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:30,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:35,040 INFO L93 Difference]: Finished difference Result 18940 states and 26261 transitions. [2021-11-13 17:36:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:36:35,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 259 [2021-11-13 17:36:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:35,182 INFO L225 Difference]: With dead ends: 18940 [2021-11-13 17:36:35,182 INFO L226 Difference]: Without dead ends: 12034 [2021-11-13 17:36:35,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:36:35,229 INFO L933 BasicCegarLoop]: 3739 mSDtfsCounter, 4475 mSDsluCounter, 3895 mSDsCounter, 0 mSdLazyCounter, 2571 mSolverCounterSat, 2306 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12037.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5121 SdHoareTripleChecker+Valid, 7634 SdHoareTripleChecker+Invalid, 4879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 75.25ms SdHoareTripleChecker+Time, 2306 IncrementalHoareTripleChecker+Valid, 2571 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13389.73ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:35,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5121 Valid, 7634 Invalid, 4879 Unknown, 0 Unchecked, 75.25ms Time], IncrementalHoareTripleChecker [2306 Valid, 2571 Invalid, 2 Unknown, 0 Unchecked, 13389.73ms Time] [2021-11-13 17:36:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12034 states. [2021-11-13 17:36:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12034 to 11472. [2021-11-13 17:36:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11472 states, 7764 states have (on average 1.254765584750129) internal successors, (9742), 7986 states have internal predecessors, (9742), 3003 states have call successors, (3003), 706 states have call predecessors, (3003), 703 states have return successors, (3000), 2909 states have call predecessors, (3000), 3000 states have call successors, (3000) [2021-11-13 17:36:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11472 states to 11472 states and 15745 transitions. [2021-11-13 17:36:35,905 INFO L78 Accepts]: Start accepts. Automaton has 11472 states and 15745 transitions. Word has length 259 [2021-11-13 17:36:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 11472 states and 15745 transitions. [2021-11-13 17:36:35,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 17:36:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 11472 states and 15745 transitions. [2021-11-13 17:36:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-13 17:36:35,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:35,921 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 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] [2021-11-13 17:36:35,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:36:35,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash -778753907, now seen corresponding path program 1 times [2021-11-13 17:36:35,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:35,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897175331] [2021-11-13 17:36:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:35,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:36:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:36:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:36:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:36:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:36:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:36:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:36:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:36:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:36:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:36:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:36:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:36:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:36:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:36:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:36:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:36:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:36:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:36:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:36:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:36:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:36:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-13 17:36:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-13 17:36:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-13 17:36:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-11-13 17:36:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1645 trivial. 0 not checked. [2021-11-13 17:36:36,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:36,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897175331] [2021-11-13 17:36:36,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897175331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:36,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:36,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:36:36,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693448158] [2021-11-13 17:36:36,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:36,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:36:36,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:36:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:36:36,908 INFO L87 Difference]: Start difference. First operand 11472 states and 15745 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 17:36:38,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:42,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:36:46,280 INFO L93 Difference]: Finished difference Result 12021 states and 16733 transitions. [2021-11-13 17:36:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:36:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 281 [2021-11-13 17:36:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:36:46,366 INFO L225 Difference]: With dead ends: 12021 [2021-11-13 17:36:46,366 INFO L226 Difference]: Without dead ends: 11966 [2021-11-13 17:36:46,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:36:46,377 INFO L933 BasicCegarLoop]: 3314 mSDtfsCounter, 3656 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 1602 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7990.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4036 SdHoareTripleChecker+Valid, 7203 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.80ms SdHoareTripleChecker+Time, 1602 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8708.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:36:46,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4036 Valid, 7203 Invalid, 3436 Unknown, 0 Unchecked, 50.80ms Time], IncrementalHoareTripleChecker [1602 Valid, 1832 Invalid, 2 Unknown, 0 Unchecked, 8708.42ms Time] [2021-11-13 17:36:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11966 states. [2021-11-13 17:36:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11966 to 11417. [2021-11-13 17:36:46,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11417 states, 7739 states have (on average 1.2540379894043159) internal successors, (9705), 7949 states have internal predecessors, (9705), 2976 states have call successors, (2976), 701 states have call predecessors, (2976), 701 states have return successors, (2976), 2896 states have call predecessors, (2976), 2976 states have call successors, (2976) [2021-11-13 17:36:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 15657 transitions. [2021-11-13 17:36:47,001 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 15657 transitions. Word has length 281 [2021-11-13 17:36:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:36:47,006 INFO L470 AbstractCegarLoop]: Abstraction has 11417 states and 15657 transitions. [2021-11-13 17:36:47,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-13 17:36:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 15657 transitions. [2021-11-13 17:36:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-13 17:36:47,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:36:47,038 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 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] [2021-11-13 17:36:47,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:36:47,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:36:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:36:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash 491508987, now seen corresponding path program 1 times [2021-11-13 17:36:47,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:36:47,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050710288] [2021-11-13 17:36:47,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:36:47,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:36:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:36:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:36:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:36:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:36:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:36:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:36:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:36:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:36:47,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:36:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:36:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:36:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:36:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:36:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:36:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:36:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:36:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:36:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:36:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:36:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:36:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:36:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:36:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-13 17:36:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-13 17:36:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:36:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-13 17:36:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-11-13 17:36:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-11-13 17:36:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-11-13 17:36:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:36:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2021-11-13 17:36:47,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:36:47,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050710288] [2021-11-13 17:36:47,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050710288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:36:47,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:36:47,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:36:47,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404291376] [2021-11-13 17:36:47,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:36:47,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:36:47,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:36:47,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:36:47,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:36:47,940 INFO L87 Difference]: Start difference. First operand 11417 states and 15657 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 17:36:50,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:52,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:36:57,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:01,117 INFO L93 Difference]: Finished difference Result 25809 states and 35725 transitions. [2021-11-13 17:37:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 311 [2021-11-13 17:37:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:01,220 INFO L225 Difference]: With dead ends: 25809 [2021-11-13 17:37:01,221 INFO L226 Difference]: Without dead ends: 16497 [2021-11-13 17:37:01,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:01,282 INFO L933 BasicCegarLoop]: 3629 mSDtfsCounter, 4064 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 2198 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11353.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4631 SdHoareTripleChecker+Valid, 7455 SdHoareTripleChecker+Invalid, 4692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.31ms SdHoareTripleChecker+Time, 2198 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12449.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:01,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4631 Valid, 7455 Invalid, 4692 Unknown, 0 Unchecked, 49.31ms Time], IncrementalHoareTripleChecker [2198 Valid, 2491 Invalid, 3 Unknown, 0 Unchecked, 12449.78ms Time] [2021-11-13 17:37:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16497 states. [2021-11-13 17:37:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16497 to 15726. [2021-11-13 17:37:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15726 states, 10665 states have (on average 1.2537271448663854) internal successors, (13371), 10955 states have internal predecessors, (13371), 4086 states have call successors, (4086), 974 states have call predecessors, (4086), 974 states have return successors, (4086), 3974 states have call predecessors, (4086), 4086 states have call successors, (4086) [2021-11-13 17:37:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15726 states to 15726 states and 21543 transitions. [2021-11-13 17:37:02,220 INFO L78 Accepts]: Start accepts. Automaton has 15726 states and 21543 transitions. Word has length 311 [2021-11-13 17:37:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:02,221 INFO L470 AbstractCegarLoop]: Abstraction has 15726 states and 21543 transitions. [2021-11-13 17:37:02,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-13 17:37:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 15726 states and 21543 transitions. [2021-11-13 17:37:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-13 17:37:02,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:02,269 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 18, 18, 18, 18, 18, 18, 6, 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] [2021-11-13 17:37:02,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:37:02,270 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1198698956, now seen corresponding path program 1 times [2021-11-13 17:37:02,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:02,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16708063] [2021-11-13 17:37:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:02,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:37:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:37:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:37:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:37:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:37:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:37:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:37:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:37:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:37:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:37:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:37:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:37:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:37:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:37:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:37:02,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:37:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:37:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:37:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:37:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-13 17:37:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-13 17:37:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-13 17:37:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-13 17:37:02,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-13 17:37:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-13 17:37:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:37:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:37:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-13 17:37:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2021-11-13 17:37:03,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:03,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16708063] [2021-11-13 17:37:03,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16708063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:03,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:03,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:37:03,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484373168] [2021-11-13 17:37:03,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:03,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:03,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:03,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:03,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:03,031 INFO L87 Difference]: Start difference. First operand 15726 states and 21543 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 17:37:04,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:06,302 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:08,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:14,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:14,955 INFO L93 Difference]: Finished difference Result 44129 states and 61067 transitions. [2021-11-13 17:37:14,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:14,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 335 [2021-11-13 17:37:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:15,141 INFO L225 Difference]: With dead ends: 44129 [2021-11-13 17:37:15,141 INFO L226 Difference]: Without dead ends: 28289 [2021-11-13 17:37:15,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:15,216 INFO L933 BasicCegarLoop]: 6083 mSDtfsCounter, 3618 mSDsluCounter, 4860 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 1705 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9785.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 10943 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.90ms SdHoareTripleChecker+Time, 1705 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10850.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:15,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4264 Valid, 10943 Invalid, 4265 Unknown, 0 Unchecked, 53.90ms Time], IncrementalHoareTripleChecker [1705 Valid, 2559 Invalid, 1 Unknown, 0 Unchecked, 10850.90ms Time] [2021-11-13 17:37:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28289 states. [2021-11-13 17:37:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28289 to 26971. [2021-11-13 17:37:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26971 states, 18284 states have (on average 1.2548129512141764) internal successors, (22943), 18778 states have internal predecessors, (22943), 7016 states have call successors, (7016), 1670 states have call predecessors, (7016), 1670 states have return successors, (7016), 6830 states have call predecessors, (7016), 7016 states have call successors, (7016) [2021-11-13 17:37:16,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26971 states to 26971 states and 36975 transitions. [2021-11-13 17:37:16,776 INFO L78 Accepts]: Start accepts. Automaton has 26971 states and 36975 transitions. Word has length 335 [2021-11-13 17:37:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:16,777 INFO L470 AbstractCegarLoop]: Abstraction has 26971 states and 36975 transitions. [2021-11-13 17:37:16,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 17:37:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 26971 states and 36975 transitions. [2021-11-13 17:37:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-13 17:37:16,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:16,829 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 18, 18, 18, 18, 18, 18, 6, 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] [2021-11-13 17:37:16,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:37:16,830 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:16,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:16,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2037732618, now seen corresponding path program 1 times [2021-11-13 17:37:16,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:16,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392493270] [2021-11-13 17:37:16,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:16,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:37:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:37:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:37:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:37:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:37:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:37:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:37:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:37:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:37:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:37:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:37:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:37:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:37:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:37:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:37:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:37:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:37:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:37:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:37:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-13 17:37:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-13 17:37:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-13 17:37:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-13 17:37:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-11-13 17:37:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-13 17:37:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:37:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:37:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-11-13 17:37:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1752 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2021-11-13 17:37:17,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:17,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392493270] [2021-11-13 17:37:17,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392493270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:17,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:17,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:37:17,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304065361] [2021-11-13 17:37:17,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:17,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:17,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:17,572 INFO L87 Difference]: Start difference. First operand 26971 states and 36975 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 17:37:19,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:21,715 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:30,101 INFO L93 Difference]: Finished difference Result 67162 states and 92897 transitions. [2021-11-13 17:37:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 335 [2021-11-13 17:37:30,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:30,407 INFO L225 Difference]: With dead ends: 67162 [2021-11-13 17:37:30,407 INFO L226 Difference]: Without dead ends: 42296 [2021-11-13 17:37:30,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:30,527 INFO L933 BasicCegarLoop]: 6494 mSDtfsCounter, 3572 mSDsluCounter, 5110 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 1602 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9939.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 11604 SdHoareTripleChecker+Invalid, 4174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.48ms SdHoareTripleChecker+Time, 1602 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10967.54ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:30,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 11604 Invalid, 4174 Unknown, 0 Unchecked, 55.48ms Time], IncrementalHoareTripleChecker [1602 Valid, 2570 Invalid, 2 Unknown, 0 Unchecked, 10967.54ms Time] [2021-11-13 17:37:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42296 states. [2021-11-13 17:37:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42296 to 40320. [2021-11-13 17:37:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40320 states, 27342 states have (on average 1.2550288932777411) internal successors, (34315), 28078 states have internal predecessors, (34315), 10480 states have call successors, (10480), 2497 states have call predecessors, (10480), 2497 states have return successors, (10480), 10206 states have call predecessors, (10480), 10480 states have call successors, (10480) [2021-11-13 17:37:33,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40320 states to 40320 states and 55275 transitions. [2021-11-13 17:37:33,076 INFO L78 Accepts]: Start accepts. Automaton has 40320 states and 55275 transitions. Word has length 335 [2021-11-13 17:37:33,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:33,078 INFO L470 AbstractCegarLoop]: Abstraction has 40320 states and 55275 transitions. [2021-11-13 17:37:33,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 17:37:33,079 INFO L276 IsEmpty]: Start isEmpty. Operand 40320 states and 55275 transitions. [2021-11-13 17:37:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-13 17:37:33,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:33,161 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 18, 18, 18, 18, 18, 18, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:33,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:37:33,161 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1916828780, now seen corresponding path program 1 times [2021-11-13 17:37:33,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:33,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821081149] [2021-11-13 17:37:33,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:33,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:37:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:37:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:37:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:37:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:37:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:37:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:37:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:37:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:37:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:37:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:37:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:37:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:37:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:37:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:37:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:37:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:37:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:37:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:37:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-13 17:37:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-13 17:37:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-13 17:37:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-13 17:37:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-13 17:37:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-11-13 17:37:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-13 17:37:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-13 17:37:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-13 17:37:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:37:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:37:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-11-13 17:37:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1939 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1911 trivial. 0 not checked. [2021-11-13 17:37:34,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:34,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821081149] [2021-11-13 17:37:34,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821081149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:34,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:34,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:37:34,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433522082] [2021-11-13 17:37:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:34,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:34,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:34,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:34,073 INFO L87 Difference]: Start difference. First operand 40320 states and 55275 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 17:37:36,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:38,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:41,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:37:48,013 INFO L93 Difference]: Finished difference Result 94500 states and 130623 transitions. [2021-11-13 17:37:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:37:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 359 [2021-11-13 17:37:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:37:48,393 INFO L225 Difference]: With dead ends: 94500 [2021-11-13 17:37:48,393 INFO L226 Difference]: Without dead ends: 54090 [2021-11-13 17:37:48,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:37:48,557 INFO L933 BasicCegarLoop]: 6497 mSDtfsCounter, 3568 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 1598 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10951.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 11613 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.79ms SdHoareTripleChecker+Time, 1598 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12026.15ms IncrementalHoareTripleChecker+Time [2021-11-13 17:37:48,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 11613 Invalid, 4163 Unknown, 0 Unchecked, 52.79ms Time], IncrementalHoareTripleChecker [1598 Valid, 2562 Invalid, 3 Unknown, 0 Unchecked, 12026.15ms Time] [2021-11-13 17:37:48,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54090 states. [2021-11-13 17:37:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54090 to 40320. [2021-11-13 17:37:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40320 states, 27342 states have (on average 1.2549923195084485) internal successors, (34314), 28078 states have internal predecessors, (34314), 10480 states have call successors, (10480), 2497 states have call predecessors, (10480), 2497 states have return successors, (10480), 10206 states have call predecessors, (10480), 10480 states have call successors, (10480) [2021-11-13 17:37:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40320 states to 40320 states and 55274 transitions. [2021-11-13 17:37:50,822 INFO L78 Accepts]: Start accepts. Automaton has 40320 states and 55274 transitions. Word has length 359 [2021-11-13 17:37:50,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:37:50,823 INFO L470 AbstractCegarLoop]: Abstraction has 40320 states and 55274 transitions. [2021-11-13 17:37:50,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 17:37:50,824 INFO L276 IsEmpty]: Start isEmpty. Operand 40320 states and 55274 transitions. [2021-11-13 17:37:50,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2021-11-13 17:37:50,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:37:50,913 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 18, 18, 18, 18, 18, 18, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:37:50,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:37:50,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:37:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:37:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1077795118, now seen corresponding path program 1 times [2021-11-13 17:37:50,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:37:50,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450696215] [2021-11-13 17:37:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:37:50,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:37:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:37:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:37:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:37:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:37:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:37:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:37:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:37:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:37:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:37:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:37:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:37:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:37:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:37:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:37:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:37:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:37:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:37:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:37:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:37:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:37:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:37:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:37:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-13 17:37:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-13 17:37:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-11-13 17:37:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-13 17:37:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-11-13 17:37:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-11-13 17:37:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-13 17:37:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2021-11-13 17:37:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-11-13 17:37:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:37:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:37:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:37:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-11-13 17:37:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:37:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1939 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-13 17:37:51,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:37:51,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450696215] [2021-11-13 17:37:51,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450696215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:37:51,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:37:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:37:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110924626] [2021-11-13 17:37:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:37:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:37:51,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:37:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:37:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:37:51,929 INFO L87 Difference]: Start difference. First operand 40320 states and 55274 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:37:53,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:37:56,082 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:04,056 INFO L93 Difference]: Finished difference Result 101280 states and 140069 transitions. [2021-11-13 17:38:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:38:04,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 359 [2021-11-13 17:38:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:04,450 INFO L225 Difference]: With dead ends: 101280 [2021-11-13 17:38:04,450 INFO L226 Difference]: Without dead ends: 63065 [2021-11-13 17:38:04,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:38:04,551 INFO L933 BasicCegarLoop]: 6446 mSDtfsCounter, 3511 mSDsluCounter, 5061 mSDsCounter, 0 mSdLazyCounter, 2599 mSolverCounterSat, 1601 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9172.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4152 SdHoareTripleChecker+Valid, 11507 SdHoareTripleChecker+Invalid, 4202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.13ms SdHoareTripleChecker+Time, 1601 IncrementalHoareTripleChecker+Valid, 2599 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10135.72ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:04,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4152 Valid, 11507 Invalid, 4202 Unknown, 0 Unchecked, 46.13ms Time], IncrementalHoareTripleChecker [1601 Valid, 2599 Invalid, 2 Unknown, 0 Unchecked, 10135.72ms Time] [2021-11-13 17:38:04,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63065 states. [2021-11-13 17:38:06,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63065 to 60096. [2021-11-13 17:38:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60096 states, 40749 states have (on average 1.2543620702348524) internal successors, (51114), 41856 states have internal predecessors, (51114), 15616 states have call successors, (15616), 3730 states have call predecessors, (15616), 3730 states have return successors, (15616), 15202 states have call predecessors, (15616), 15616 states have call successors, (15616) [2021-11-13 17:38:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60096 states to 60096 states and 82346 transitions. [2021-11-13 17:38:07,099 INFO L78 Accepts]: Start accepts. Automaton has 60096 states and 82346 transitions. Word has length 359 [2021-11-13 17:38:07,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:07,100 INFO L470 AbstractCegarLoop]: Abstraction has 60096 states and 82346 transitions. [2021-11-13 17:38:07,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-13 17:38:07,100 INFO L276 IsEmpty]: Start isEmpty. Operand 60096 states and 82346 transitions. [2021-11-13 17:38:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-13 17:38:07,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:07,176 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 18, 18, 18, 18, 18, 18, 9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:38:07,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:38:07,177 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash -179355079, now seen corresponding path program 1 times [2021-11-13 17:38:07,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:07,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920995094] [2021-11-13 17:38:07,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:07,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:38:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:38:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:38:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:38:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:38:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:38:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:38:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:38:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:38:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:38:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:38:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:38:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:38:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:38:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:38:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:38:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:38:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:38:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:38:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:38:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:38:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-13 17:38:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-13 17:38:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-13 17:38:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-11-13 17:38:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-13 17:38:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:38:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:38:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-13 17:38:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:38:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:38:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-11-13 17:38:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-11-13 17:38:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2021-11-13 17:38:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-11-13 17:38:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:08,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2021-11-13 17:38:08,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:08,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920995094] [2021-11-13 17:38:08,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920995094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:08,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:08,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:38:08,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028643519] [2021-11-13 17:38:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:08,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:38:08,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:38:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:38:08,114 INFO L87 Difference]: Start difference. First operand 60096 states and 82346 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 17:38:10,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:12,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:14,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:22,082 INFO L93 Difference]: Finished difference Result 140967 states and 194726 transitions. [2021-11-13 17:38:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:38:22,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 385 [2021-11-13 17:38:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:22,493 INFO L225 Difference]: With dead ends: 140967 [2021-11-13 17:38:22,494 INFO L226 Difference]: Without dead ends: 80807 [2021-11-13 17:38:22,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:38:22,683 INFO L933 BasicCegarLoop]: 6056 mSDtfsCounter, 3193 mSDsluCounter, 4848 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 1590 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9870.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 10904 SdHoareTripleChecker+Invalid, 4114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.92ms SdHoareTripleChecker+Time, 1590 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10893.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:22,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3758 Valid, 10904 Invalid, 4114 Unknown, 0 Unchecked, 48.92ms Time], IncrementalHoareTripleChecker [1590 Valid, 2522 Invalid, 2 Unknown, 0 Unchecked, 10893.91ms Time] [2021-11-13 17:38:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80807 states. [2021-11-13 17:38:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80807 to 76969. [2021-11-13 17:38:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76969 states, 52192 states have (on average 1.2537362047823422) internal successors, (65435), 53610 states have internal predecessors, (65435), 19974 states have call successors, (19974), 4802 states have call predecessors, (19974), 4802 states have return successors, (19974), 19441 states have call predecessors, (19974), 19974 states have call successors, (19974) [2021-11-13 17:38:26,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76969 states to 76969 states and 105383 transitions. [2021-11-13 17:38:26,409 INFO L78 Accepts]: Start accepts. Automaton has 76969 states and 105383 transitions. Word has length 385 [2021-11-13 17:38:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:26,410 INFO L470 AbstractCegarLoop]: Abstraction has 76969 states and 105383 transitions. [2021-11-13 17:38:26,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-13 17:38:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 76969 states and 105383 transitions. [2021-11-13 17:38:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-13 17:38:26,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:38:26,488 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 18, 18, 18, 18, 18, 18, 9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:38:26,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 17:38:26,488 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:38:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:38:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1748917623, now seen corresponding path program 1 times [2021-11-13 17:38:26,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:38:26,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074703155] [2021-11-13 17:38:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:38:26,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:38:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:38:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:38:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-13 17:38:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-13 17:38:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:38:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 17:38:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:38:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:38:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:38:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:38:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:38:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-13 17:38:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-13 17:38:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-13 17:38:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-11-13 17:38:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 17:38:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-13 17:38:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-13 17:38:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-11-13 17:38:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:38:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-13 17:38:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-13 17:38:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-13 17:38:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-13 17:38:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-13 17:38:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-11-13 17:38:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-11-13 17:38:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:38:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:38:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-11-13 17:38:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:38:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:38:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 17:38:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-11-13 17:38:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-11-13 17:38:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2021-11-13 17:38:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-11-13 17:38:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:38:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1928 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1928 trivial. 0 not checked. [2021-11-13 17:38:27,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:38:27,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074703155] [2021-11-13 17:38:27,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074703155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:38:27,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:38:27,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:38:27,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493747987] [2021-11-13 17:38:27,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:38:27,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:38:27,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:38:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:38:27,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:38:27,770 INFO L87 Difference]: Start difference. First operand 76969 states and 105383 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:38:29,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:38:37,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:38:37,108 INFO L93 Difference]: Finished difference Result 80838 states and 112186 transitions. [2021-11-13 17:38:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:38:37,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 385 [2021-11-13 17:38:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:38:37,115 INFO L225 Difference]: With dead ends: 80838 [2021-11-13 17:38:37,115 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 17:38:37,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:38:37,509 INFO L933 BasicCegarLoop]: 3295 mSDtfsCounter, 3583 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 1582 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6223.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3953 SdHoareTripleChecker+Valid, 7175 SdHoareTripleChecker+Invalid, 3401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.66ms SdHoareTripleChecker+Time, 1582 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6806.46ms IncrementalHoareTripleChecker+Time [2021-11-13 17:38:37,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3953 Valid, 7175 Invalid, 3401 Unknown, 0 Unchecked, 42.66ms Time], IncrementalHoareTripleChecker [1582 Valid, 1818 Invalid, 1 Unknown, 0 Unchecked, 6806.46ms Time] [2021-11-13 17:38:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 17:38:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 17:38:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:38:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 17:38:37,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 385 [2021-11-13 17:38:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:38:37,521 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:38:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:38:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 17:38:37,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 17:38:37,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_return_value_probeErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-13 17:38:37,534 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-13 17:38:37,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:38:37,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.